# CHAPTER 

# 27

FLIGHT CONTROLSEFFECTIVE PAGES 1 thru 26 May 20/2011

27-CONTENTS O 1 May 20/2011 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 May 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 May 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 May 20/2010 15 Feb 20/2010 16 May 20/2010 17 Feb 20/2010 O 18 May 20/2011 19 Feb 20/2010 20 Feb 20/2010 21 Feb 20/2010 22 Jan 20/2011 23 Jan 20/2011 O 24 May 20/2011 O 25 May 20/2011 O 26 May 20/2011 O 27 May 20/2011 O 28 May 20/2011 O 29 May 20/2011 O 30 May 20/2011 O 31 May 20/2011 O 32 May 20/2011 O 33 May 20/2011 O 34 May 20/2011 O 35 May 20/2011 O 36 May 20/2011 27-CONTENTS (cont) O 37 May 20/2011 O 38 May 20/2011 O 39 May 20/2011 O 40 May 20/2011 O 41 May 20/2011 O 42 May 20/2011 O 43 May 20/2011 O 44 May 20/2011 27-00-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 BLANK 27-00-01 1 Feb 20/2010 2 BLANK 27-00-01 R 201 May 20/2011 R 202 May 20/2011 R 203 May 20/2011 R 204 May 20/2011 R 205 May 20/2011 R 206 May 20/2011 R 207 May 20/2011 R 208 May 20/2011 R 209 May 20/2011 R 210 May 20/2011 R 211 May 20/2011 R 212 May 20/2011 R 213 May 20/2011 R 214 May 20/2011 R 215 May 20/2011 R 216 May 20/2011 R 217 May 20/2011 R 218 May 20/2011 R 219 May 20/2011 R 220 May 20/2011 27-00-01 (cont) R 221 May 20/2011 R 222 May 20/2011 R 223 May 20/2011 224 BLANK 27-00-02 201 Feb 20/2010 202 BLANK 27-01-00 501 Feb 20/2010 502 Sep 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 27-02-00 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 615 Feb 20/2010 616 Feb 20/2010 617 Feb 20/2010 618 Feb 20/2010 619 Feb 20/2010 620 Feb 20/2010 621 Feb 20/2010 622 BLANK 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-09-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 21 Feb 20/2010 22 Feb 20/2010 23 Feb 20/2010 24 Feb 20/2010 25 Feb 20/2010 26 Feb 20/2010 27 Feb 20/2010 28 Feb 20/2010 29 Feb 20/2010 30 Feb 20/2010 31 Feb 20/2010 32 Feb 20/2010 33 Feb 20/2010 34 Feb 20/2010 35 Feb 20/2010 36 BLANK 27-09-00 201 Feb 20/2010 202 Feb 20/2010 27-09-00 (cont) 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 BLANK 27-11-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 27-11-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 27-11-00 (cont) 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 May 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 Feb 20/2010 524 Feb 20/2010 525 Feb 20/2010 526 Jan 20/2011 527 Feb 20/2010 528 Feb 20/2010 529 Feb 20/2010 530 Feb 20/2010 531 Feb 20/2010 532 BLANK 27-11-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 27-11-02 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-11-03 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 R 212 May 20/2011 213 Feb 20/2010 R 214 May 20/2011 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 Feb 20/2010 27-11-14 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 R 207 May 20/2011 208 Feb 20/2010 209 Feb 20/2010 R 210 May 20/2011 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 BLANK 27-11-16 401 Feb 20/2010 27-11-16 (cont) 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 R 406 May 20/2011 407 Feb 20/2010 R 408 May 20/2011 409 Feb 20/2010 410 Feb 20/2010 27-11-17 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 R 404 May 20/2011 R 405 May 20/2011 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-11-17 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-11-20 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 May 20/2010 210 May 20/2010 211 May 20/2010 212 May 20/2010 213 May 20/2010 214 May 20/2010 215 Feb 20/2010 27-11-20 (cont) 216 Feb 20/2010 217 Feb 20/2010 218 BLANK 27-11-20 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 BLANK 27-11-21 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-11-21 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-18-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 BLANK 27-18-00 501 Feb 20/2010 502 May 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-18-00 (cont) 508 Sep 20/2010 509 Feb 20/2010 510 Sep 20/2010 511 Sep 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 27-18-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 R 404 May 20/2011 405 Jan 20/2011 406 Jan 20/2011 27-21-00 Config 1 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 21 Feb 20/2010 22 Feb 20/2010 23 Feb 20/2010 24 Feb 20/2010 27-21-00 Config 1 (cont) 25 Feb 20/2010 26 Feb 20/2010 27 Feb 20/2010 28 Feb 20/2010 29 Feb 20/2010 30 Feb 20/2010 31 Feb 20/2010 32 Feb 20/2010 33 Feb 20/2010 34 Feb 20/2010 35 Feb 20/2010 36 Feb 20/2010 27-21-00 Config 1 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 Feb 20/2010 524 Feb 20/2010 525 Feb 20/2010 526 Jan 20/2011 27-21-00 Config 1 (cont) R 527 May 20/2011 528 Sep 20/2010 529 Sep 20/2010 R 530 May 20/2011 531 Sep 20/2010 532 Sep 20/2010 533 Sep 20/2010 534 Jan 20/2011 535 Jan 20/2011 536 Sep 20/2010 537 Sep 20/2010 538 Jan 20/2011 539 Jan 20/2011 R 540 May 20/2011 541 Jan 20/2011 542 Jan 20/2011 543 Jan 20/2011 544 Jan 20/2011 545 Jan 20/2011 546 Jan 20/2011 547 Jan 20/2011 548 Sep 20/2010 549 Sep 20/2010 550 Sep 20/2010 551 Sep 20/2010 552 Sep 20/2010 553 Sep 20/2010 554 Sep 20/2010 555 Sep 20/2010 556 Feb 20/2010 557 Feb 20/2010 558 Feb 20/2010 559 Feb 20/2010 560 Feb 20/2010 561 Feb 20/2010 562 Feb 20/2010 563 Feb 20/2010 564 Feb 20/2010 565 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-21-00 Config 1 (cont) 566 Feb 20/2010 567 Feb 20/2010 568 Feb 20/2010 569 Feb 20/2010 570 Feb 20/2010 571 Feb 20/2010 572 Feb 20/2010 573 Feb 20/2010 574 Feb 20/2010 575 Feb 20/2010 576 Feb 20/2010 577 Feb 20/2010 578 Feb 20/2010 27-21-02 401 May 20/2010 402 Sep 20/2010 403 Sep 20/2010 404 May 20/2010 405 May 20/2010 406 May 20/2010 407 May 20/2010 408 May 20/2010 409 May 20/2010 410 May 20/2010 27-21-03 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-21-05 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 27-21-05 (cont) 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 BLANK 27-21-06 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 Feb 20/2010 27-21-12 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 27-21-12 (cont) 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 Feb 20/2010 219 Feb 20/2010 220 Feb 20/2010 221 Feb 20/2010 222 Feb 20/2010 223 Feb 20/2010 224 Feb 20/2010 27-21-13 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 R 209 May 20/2011 R 210 May 20/2011 O 211 May 20/2011 R 212 May 20/2011 O 213 May 20/2011 214 BLANK 27-21-17 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Sep 20/2010 410 Sep 20/2010 411 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-21-17 (cont) 412 BLANK 27-21-17 R 601 May 20/2011 R 602 May 20/2011 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 BLANK 27-21-19 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 27-21-20 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 27-21-20 (cont) 216 Feb 20/2010 217 Sep 20/2010 218 Sep 20/2010 27-21-21 401 Feb 20/2010 402 Sep 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 R 409 May 20/2011 410 Jan 20/2011 411 Jan 20/2011 412 Jan 20/2011 413 Jan 20/2011 414 BLANK 27-21-21 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-21-23 201 Feb 20/2010 202 Feb 20/2010 203 May 20/2010 204 May 20/2010 205 May 20/2010 206 May 20/2010 207 May 20/2010 208 May 20/2010 27-23-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 27-23-00 (cont) 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 27-23-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 BLANK 27-23-01 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 BLANK 27-23-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-23-51 201 Feb 20/2010 R 202 May 20/2011 203 Feb 20/2010 204 Feb 20/2010 R 205 May 20/2011 R 206 May 20/2011 O 207 May 20/2011 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-23-51 (cont) 208 BLANK 27-28-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 27-28-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 27-28-01 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 27-31-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 27-31-00 (cont) 15 Feb 20/2010 16 Feb 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 27-31-00 501 Feb 20/2010 502 May 20/2010 503 May 20/2010 504 May 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 Feb 20/2010 524 Feb 20/2010 525 Feb 20/2010 526 Feb 20/2010 527 Feb 20/2010 528 Feb 20/2010 529 Sep 20/2010 R 530 May 20/2011 531 Jan 20/2011 532 Sep 20/2010 27-31-00 (cont) R 533 May 20/2011 R 534 May 20/2011 535 Sep 20/2010 536 Sep 20/2010 537 Jan 20/2011 538 Jan 20/2011 539 Sep 20/2010 540 Jan 20/2011 541 Sep 20/2010 542 Jan 20/2011 543 Jan 20/2011 544 Sep 20/2010 545 Sep 20/2010 546 Sep 20/2010 547 Sep 20/2010 548 Sep 20/2010 549 Sep 20/2010 550 Sep 20/2010 551 Sep 20/2010 552 Sep 20/2010 553 Sep 20/2010 554 Sep 20/2010 R 555 May 20/2011 556 Sep 20/2010 557 Sep 20/2010 558 Sep 20/2010 559 Sep 20/2010 560 Sep 20/2010 561 Sep 20/2010 562 Sep 20/2010 563 Sep 20/2010 564 Sep 20/2010 565 Sep 20/2010 566 Sep 20/2010 567 Sep 20/2010 568 Sep 20/2010 569 Sep 20/2010 570 Feb 20/2010 571 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-31-00 (cont) 572 Feb 20/2010 573 Feb 20/2010 574 Feb 20/2010 575 Feb 20/2010 576 Feb 20/2010 577 Feb 20/2010 578 Feb 20/2010 579 Feb 20/2010 580 Feb 20/2010 581 Feb 20/2010 582 Feb 20/2010 583 Feb 20/2010 584 Feb 20/2010 585 Feb 20/2010 586 Feb 20/2010 587 Feb 20/2010 588 Feb 20/2010 589 Feb 20/2010 590 Feb 20/2010 591 May 20/2010 592 Feb 20/2010 593 Feb 20/2010 594 Feb 20/2010 595 Feb 20/2010 596 Feb 20/2010 597 Feb 20/2010 598 Feb 20/2010 598.1 Feb 20/2010 598.2 Feb 20/2010 598.3 Feb 20/2010 598.4 Feb 20/2010 598.5 Feb 20/2010 598.6 Feb 20/2010 27-31-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 27-31-01 (cont) 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 R 410 May 20/2011 411 May 20/2010 412 Feb 20/2010 413 Sep 20/2010 414 Jan 20/2011 415 Feb 20/2010 416 BLANK 27-31-01 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 BLANK 27-31-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 27-31-03 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 27-31-05 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 27-31-05 (cont) 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 417 Feb 20/2010 418 Feb 20/2010 419 Feb 20/2010 420 Feb 20/2010 421 Feb 20/2010 422 Feb 20/2010 423 Feb 20/2010 424 Feb 20/2010 425 Feb 20/2010 426 Feb 20/2010 27-31-05 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 27-31-06 401 Feb 20/2010 402 May 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-31-06 (cont) 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 27-31-10 R 401 May 20/2011 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 R 406 May 20/2011 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-31-10 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-31-11 401 Feb 20/2010 402 May 20/2010 403 Feb 20/2010 404 May 20/2010 27-31-12 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-31-13 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 27-31-13 (cont) 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 R 409 May 20/2011 O 410 May 20/2011 411 Feb 20/2010 412 Feb 20/2010 R 413 May 20/2011 414 BLANK 27-31-15 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 27-31-16 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 May 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 27-31-17 201 Feb 20/2010 R 202 May 20/2011 203 Feb 20/2010 27-31-17 (cont) 204 Feb 20/2010 R 205 May 20/2011 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 R 216 May 20/2011 R 217 May 20/2011 O 218 May 20/2011 27-31-18 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 R 407 May 20/2011 R 408 May 20/2011 O 409 May 20/2011 O 410 May 20/2011 O 411 May 20/2011 412 BLANK 27-31-19 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-31-21 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-31-21 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-31-23 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 27-32-00 Config 4 1 Feb 20/2010 2 Feb 20/2010 R 3 May 20/2011 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 27-32-00 Config 5 501 Feb 20/2010 502 Feb 20/2010 503 May 20/2010 504 Sep 20/2010 505 Sep 20/2010 27-32-00 Config 5 (cont) 506 Jan 20/2011 507 Sep 20/2010 508 Sep 20/2010 509 May 20/2010 510 May 20/2010 R 511 May 20/2011 512 Sep 20/2010 513 Sep 20/2010 514 Sep 20/2010 515 Sep 20/2010 516 Sep 20/2010 517 Sep 20/2010 518 Sep 20/2010 519 Sep 20/2010 520 Jan 20/2011 27-32-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-32-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-32-05 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-38-00 1 Feb 20/2010 2 Feb 20/2010 27-38-00 (cont) 3 Feb 20/2010 4 BLANK 27-38-00 501 May 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Jan 20/2011 508 Feb 20/2010 509 Feb 20/2010 510 Jan 20/2011 511 Feb 20/2010 512 Feb 20/2010 27-38-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 27-41-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-41-00 (cont) 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 27-41-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 R 509 May 20/2011 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 R 519 May 20/2011 R 520 May 20/2011 R 521 May 20/2011 O 522 May 20/2011 523 Feb 20/2010 524 Feb 20/2010 R 525 May 20/2011 R 526 May 20/2011 R 527 May 20/2011 R 528 May 20/2011 529 Feb 20/2010 530 Feb 20/2010 27-41-00 (cont) 531 Feb 20/2010 532 Feb 20/2010 533 Feb 20/2010 534 Feb 20/2010 R 535 May 20/2011 R 536 May 20/2011 R 537 May 20/2011 R 538 May 20/2011 O 539 May 20/2011 O 540 May 20/2011 541 Feb 20/2010 542 Feb 20/2010 R 543 May 20/2011 R 544 May 20/2011 O 545 May 20/2011 O 546 May 20/2011 R 547 May 20/2011 R 548 May 20/2011 O 549 May 20/2011 R 550 May 20/2011 O 551 May 20/2011 O 552 May 20/2011 O 553 May 20/2011 O 554 May 20/2011 O 555 May 20/2011 O 556 May 20/2011 O 557 May 20/2011 O 558 May 20/2011 O 559 May 20/2011 O 560 May 20/2011 O 561 May 20/2011 R 562 May 20/2011 R 563 May 20/2011 O 564 May 20/2011 O 565 May 20/2011 O 566 May 20/2011 27-41-01 R 401 May 20/2011 402 Feb 20/2010 27-41-01 (cont) 403 Feb 20/2010 R 404 May 20/2011 405 Feb 20/2010 406 Feb 20/2010 27-41-03 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 27-41-05 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 R 206 May 20/2011 R 207 May 20/2011 O 208 May 20/2011 27-41-07 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 27-41-10 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 R 405 May 20/2011 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 R 410 May 20/2011 O 411 May 20/2011 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-41-10 (cont) R 412 May 20/2011 O 413 May 20/2011 O 414 May 20/2011 27-41-10 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 R 609 May 20/2011 610 Feb 20/2010 27-41-11 401 Feb 20/2010 R 402 May 20/2011 R 403 May 20/2011 R 404 May 20/2011 R 405 May 20/2011 O 406 May 20/2011 27-41-13 401 Feb 20/2010 402 Feb 20/2010 R 403 May 20/2011 404 Feb 20/2010 R 405 May 20/2011 O 406 May 20/2011 27-41-14 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 27-41-14 (cont) 611 Feb 20/2010 612 BLANK 27-41-17 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 BLANK 27-48-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 BLANK 27-48-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Jan 20/2011 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 27-48-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 27-48-01 (cont) 404 Sep 20/2010 405 Sep 20/2010 406 Feb 20/2010 27-48-03 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 27-48-06 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-51-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Sep 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 21 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-00 (cont) 22 Feb 20/2010 23 Feb 20/2010 24 May 20/2010 25 Feb 20/2010 26 Feb 20/2010 27 Feb 20/2010 28 Feb 20/2010 29 Feb 20/2010 30 Feb 20/2010 31 Feb 20/2010 32 Feb 20/2010 33 Feb 20/2010 34 Feb 20/2010 35 Feb 20/2010 36 Feb 20/2010 37 Feb 20/2010 38 Feb 20/2010 27-51-00 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 27-51-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 27-51-00 (cont) 511 Feb 20/2010 512 Feb 20/2010 513 Jan 20/2011 514 Jan 20/2011 515 Jan 20/2011 516 Jan 20/2011 517 Jan 20/2011 518 Jan 20/2011 519 Jan 20/2011 520 Jan 20/2011 521 Jan 20/2011 522 Jan 20/2011 523 Jan 20/2011 524 Jan 20/2011 525 Jan 20/2011 526 Jan 20/2011 R 527 May 20/2011 528 Jan 20/2011 529 Jan 20/2011 530 Jan 20/2011 531 Jan 20/2011 532 Jan 20/2011 533 Jan 20/2011 534 Jan 20/2011 535 Jan 20/2011 536 Jan 20/2011 537 Jan 20/2011 538 Jan 20/2011 539 Jan 20/2011 540 Jan 20/2011 541 Jan 20/2011 542 Jan 20/2011 543 Jan 20/2011 544 Jan 20/2011 545 Jan 20/2011 546 Jan 20/2011 547 Jan 20/2011 548 Jan 20/2011 549 Jan 20/2011 27-51-00 (cont) 550 Jan 20/2011 551 Jan 20/2011 552 Jan 20/2011 553 Jan 20/2011 554 Jan 20/2011 27-51-00 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 615 Feb 20/2010 616 Feb 20/2010 617 Feb 20/2010 618 Feb 20/2010 619 Feb 20/2010 620 Feb 20/2010 621 Feb 20/2010 622 Feb 20/2010 27-51-01 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-01 (cont) 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 Feb 20/2010 27-51-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 417 Feb 20/2010 418 Feb 20/2010 419 Feb 20/2010 420 BLANK 27-51-02 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 27-51-02 (cont) 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Jan 20/2011 522 Jan 20/2011 523 Jan 20/2011 524 Jan 20/2011 525 Jan 20/2011 526 Jan 20/2011 527 Jan 20/2011 528 Jan 20/2011 529 Jan 20/2011 530 Jan 20/2011 27-51-02 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 27-51-03 R 401 May 20/2011 R 402 May 20/2011 27-51-03 (cont) R 403 May 20/2011 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Sep 20/2010 408 Feb 20/2010 R 409 May 20/2011 R 410 May 20/2011 A 411 May 20/2011 A 412 May 20/2011 A 413 May 20/2011 A 414 May 20/2011 A 415 May 20/2011 A 416 BLANK 27-51-05 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-51-06 401 May 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Jan 20/2011 413 Jan 20/2011 414 Jan 20/2011 415 Jan 20/2011 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-06 (cont) 416 Jan 20/2011 417 Jan 20/2011 418 Jan 20/2011 419 Jan 20/2011 420 Jan 20/2011 421 Jan 20/2011 422 Jan 20/2011 423 Jan 20/2011 424 BLANK 27-51-07 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Jan 20/2011 406 Jan 20/2011 407 Jan 20/2011 408 Jan 20/2011 409 Jan 20/2011 410 BLANK 27-51-08 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Jan 20/2011 405 Feb 20/2010 406 Jan 20/2011 407 Jan 20/2011 408 Jan 20/2011 409 Jan 20/2011 410 Jan 20/2011 27-51-09 401 Feb 20/2010 402 Feb 20/2010 403 Jan 20/2011 404 Feb 20/2010 405 Jan 20/2011 406 Jan 20/2011 407 Jan 20/2011 27-51-09 (cont) 408 Jan 20/2011 409 Jan 20/2011 410 BLANK 27-51-10 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Jan 20/2011 405 Feb 20/2010 406 Jan 20/2011 407 Jan 20/2011 408 Jan 20/2011 409 Jan 20/2011 410 Jan 20/2011 411 Jan 20/2011 412 Jan 20/2011 27-51-11 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 BLANK 27-51-11 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 27-51-11 (cont) 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 615 Feb 20/2010 616 Feb 20/2010 617 Feb 20/2010 618 BLANK 27-51-12 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 May 20/2010 410 May 20/2010 411 May 20/2010 412 May 20/2010 413 May 20/2010 414 BLANK 27-51-12 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-12 (cont) 513 Feb 20/2010 514 Feb 20/2010 27-51-13 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 R 404 May 20/2011 405 Feb 20/2010 406 Feb 20/2010 R 407 May 20/2011 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-51-14 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 BLANK 27-51-14 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 27-51-14 (cont) 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 Sep 20/2010 524 Sep 20/2010 525 Sep 20/2010 526 Sep 20/2010 27-51-15 R 401 May 20/2011 O 402 May 20/2011 O 403 May 20/2011 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 R 410 May 20/2011 A 411 May 20/2011 A 412 May 20/2011 A 413 May 20/2011 A 414 May 20/2011 A 415 May 20/2011 A 416 May 20/2011 27-51-15 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 BLANK 27-51-16 401 Feb 20/2010 402 Feb 20/2010 27-51-16 (cont) 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 BLANK 27-51-17 401 Feb 20/2010 402 Sep 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Sep 20/2010 406 Sep 20/2010 407 Sep 20/2010 408 Sep 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 417 Sep 20/2010 418 Sep 20/2010 419 Sep 20/2010 420 Sep 20/2010 27-51-18 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-21 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 27-51-21 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 615 Feb 20/2010 616 Feb 20/2010 617 Feb 20/2010 618 BLANK 27-51-22 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 27-51-22 (cont) 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 27-51-22 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 BLANK 27-51-23 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 27-51-23 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-51-24 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 May 20/2010 405 Jan 20/2011 406 Jan 20/2011 27-51-24 (cont) 407 Jan 20/2011 408 Jan 20/2011 409 Jan 20/2011 410 BLANK 27-51-25 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Jan 20/2011 209 Jan 20/2011 210 Jan 20/2011 211 Jan 20/2011 212 Jan 20/2011 213 Jan 20/2011 214 Jan 20/2011 215 Jan 20/2011 216 Jan 20/2011 217 Jan 20/2011 218 Jan 20/2011 219 Jan 20/2011 220 Jan 20/2011 221 Jan 20/2011 222 Jan 20/2011 223 Jan 20/2011 224 Jan 20/2011 225 Jan 20/2011 226 Jan 20/2011 27-51-26 401 Jan 20/2011 402 Jan 20/2011 403 Jan 20/2011 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-26 (cont) 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Jan 20/2011 415 Jan 20/2011 416 Jan 20/2011 R 417 May 20/2011 R 418 May 20/2011 O 419 May 20/2011 O 420 May 20/2011 421 Jan 20/2011 422 Jan 20/2011 423 Jan 20/2011 424 Jan 20/2011 425 Jan 20/2011 426 Jan 20/2011 27-51-27 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Jan 20/2011 206 Feb 20/2010 207 Feb 20/2010 R 208 May 20/2011 R 209 May 20/2011 R 210 May 20/2011 O 211 May 20/2011 O 212 May 20/2011 O 213 May 20/2011 O 214 May 20/2011 27-51-28 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 27-51-28 (cont) 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Jan 20/2011 209 Jan 20/2011 210 Jan 20/2011 211 Jan 20/2011 212 Jan 20/2011 213 Jan 20/2011 214 Jan 20/2011 R 215 May 20/2011 O 216 May 20/2011 O 217 May 20/2011 O 218 May 20/2011 O 219 May 20/2011 O 220 May 20/2011 O 221 May 20/2011 O 222 May 20/2011 O 223 May 20/2011 O 224 May 20/2011 O 225 May 20/2011 O 226 May 20/2011 O 227 May 20/2011 O 228 May 20/2011 O 229 May 20/2011 230 BLANK 27-51-29 201 Feb 20/2010 202 Jan 20/2011 203 Jan 20/2011 204 Feb 20/2010 205 May 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Jan 20/2011 210 Jan 20/2011 O 211 May 20/2011 R 212 May 20/2011 27-51-29 (cont) R 213 May 20/2011 O 214 May 20/2011 O 215 May 20/2011 O 216 May 20/2011 217 Jan 20/2011 218 Jan 20/2011 219 Jan 20/2011 220 Jan 20/2011 221 Jan 20/2011 222 Jan 20/2011 223 Jan 20/2011 224 Jan 20/2011 225 Jan 20/2011 226 Jan 20/2011 227 Jan 20/2011 228 Jan 20/2011 229 Jan 20/2011 230 Jan 20/2011 231 Jan 20/2011 232 Jan 20/2011 233 Jan 20/2011 234 Jan 20/2011 235 Jan 20/2011 236 Jan 20/2011 27-51-30 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-51-30 (cont) 215 Feb 20/2010 216 BLANK 27-51-31 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Sep 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 May 20/2010 213 Feb 20/2010 214 Sep 20/2010 215 Sep 20/2010 216 BLANK 27-51-32 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 27-51-32 601 Feb 20/2010 602 Feb 20/2010 27-51-32 (cont) 603 Feb 20/2010 604 BLANK 27-51-33 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-51-34 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-58-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 BLANK 27-58-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 27-58-01 501 Sep 20/2010 502 Sep 20/2010 27-58-01 (cont) 503 Sep 20/2010 504 Sep 20/2010 R 505 May 20/2011 R 506 May 20/2011 R 507 May 20/2011 R 508 May 20/2011 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 Feb 20/2010 524 May 20/2010 525 May 20/2010 526 May 20/2010 527 May 20/2010 528 May 20/2010 529 May 20/2010 530 May 20/2010 531 May 20/2010 532 May 20/2010 533 May 20/2010 534 May 20/2010 535 Feb 20/2010 536 Feb 20/2010 537 Feb 20/2010 538 Feb 20/2010 539 Feb 20/2010 540 Feb 20/2010 541 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-58-01 (cont) 542 Feb 20/2010 543 Feb 20/2010 544 Feb 20/2010 545 Feb 20/2010 546 BLANK 27-58-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 BLANK 27-58-03 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-60-00 1 Feb 20/2010 2 Feb 20/2010 27-61-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 Feb 20/2010 27-61-00 (cont) 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 20 Feb 20/2010 21 Feb 20/2010 22 BLANK 27-61-00 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 BLANK 27-61-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 R 511 May 20/2011 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 515 Feb 20/2010 27-61-00 (cont) 516 Feb 20/2010 517 Feb 20/2010 518 Jan 20/2011 519 Jan 20/2011 520 Feb 20/2010 521 Jan 20/2011 522 Jan 20/2011 523 Jan 20/2011 524 Feb 20/2010 525 Feb 20/2010 526 Feb 20/2010 527 Feb 20/2010 528 Feb 20/2010 529 Jan 20/2011 530 Jan 20/2011 531 Jan 20/2011 532 Jan 20/2011 533 Jan 20/2011 534 Jan 20/2011 535 Jan 20/2011 536 Feb 20/2010 537 Feb 20/2010 538 Jan 20/2011 539 Feb 20/2010 540 Feb 20/2010 541 Feb 20/2010 542 Feb 20/2010 R 543 May 20/2011 544 Feb 20/2010 545 Feb 20/2010 546 Feb 20/2010 547 Feb 20/2010 548 Feb 20/2010 549 Feb 20/2010 550 Feb 20/2010 551 Feb 20/2010 552 Feb 20/2010 R 553 May 20/2011 O 554 May 20/2011 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-61-00 (cont) R 555 May 20/2011 R 556 May 20/2011 O 557 May 20/2011 R 558 May 20/2011 O 559 May 20/2011 O 560 May 20/2011 R 561 May 20/2011 R 562 May 20/2011 R 563 May 20/2011 R 564 May 20/2011 R 565 May 20/2011 R 566 May 20/2011 O 567 May 20/2011 O 568 May 20/2011 R 569 May 20/2011 O 570 May 20/2011 O 571 May 20/2011 O 572 May 20/2011 O 573 May 20/2011 O 574 May 20/2011 O 575 May 20/2011 576 BLANK 27-61-01 401 Feb 20/2010 402 Feb 20/2010 403 Sep 20/2010 404 Sep 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 27-61-01 (cont) 417 Feb 20/2010 418 Feb 20/2010 419 Feb 20/2010 420 Sep 20/2010 421 Feb 20/2010 422 Feb 20/2010 423 Feb 20/2010 424 Feb 20/2010 425 Feb 20/2010 426 Feb 20/2010 427 Feb 20/2010 428 Feb 20/2010 429 Feb 20/2010 430 Feb 20/2010 27-61-02 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Sep 20/2010 208 Feb 20/2010 R 209 May 20/2011 O 210 May 20/2011 R 211 May 20/2011 O 212 May 20/2011 O 213 May 20/2011 O 214 May 20/2011 O 215 May 20/2011 216 BLANK 27-61-04 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 27-62-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 BLANK 27-62-00 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Jan 20/2011 506 Sep 20/2010 507 Sep 20/2010 508 Jan 20/2011 509 Jan 20/2011 510 Sep 20/2010 511 Jan 20/2011 512 Sep 20/2010 513 Sep 20/2010 514 Jan 20/2011 515 Sep 20/2010 516 Sep 20/2010 517 Sep 20/2010 518 Sep 20/2010 519 Sep 20/2010 520 Sep 20/2010 R 521 May 20/2011 522 Jan 20/2011 523 Jan 20/2011 524 Sep 20/2010 525 Sep 20/2010 526 Sep 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

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### CHAPTER 27 FLIGHT CONTROLS27-62-00 (cont) 527 Sep 20/2010 528 Sep 20/2010 529 Sep 20/2010 530 Sep 20/2010 531 Sep 20/2010 532 Sep 20/2010 533 Sep 20/2010 534 Sep 20/2010 535 Sep 20/2010 536 BLANK 27-62-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 BLANK 27-62-02 R 201 May 20/2011 202 Feb 20/2010 R 203 May 20/2011 204 Feb 20/2010 R 205 May 20/2011 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 Feb 20/2010 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 Feb 20/2010 219 Feb 20/2010 27-62-02 (cont) 220 Feb 20/2010 221 Feb 20/2010 222 Feb 20/2010 223 Feb 20/2010 224 BLANK 27-62-07 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 27-62-08 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 BLANK 27-81-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 5 Feb 20/2010 6 Feb 20/2010 7 Feb 20/2010 8 Feb 20/2010 9 Feb 20/2010 10 Feb 20/2010 11 Feb 20/2010 12 Feb 20/2010 13 Feb 20/2010 14 Feb 20/2010 15 Feb 20/2010 16 May 20/2010 17 Feb 20/2010 18 Feb 20/2010 19 Feb 20/2010 27-81-00 (cont) 20 Feb 20/2010 21 Feb 20/2010 22 Feb 20/2010 23 Feb 20/2010 24 Feb 20/2010 25 Feb 20/2010 26 Feb 20/2010 27 Feb 20/2010 28 Feb 20/2010 29 Feb 20/2010 30 Feb 20/2010 31 Feb 20/2010 32 Feb 20/2010 33 Feb 20/2010 34 Feb 20/2010 35 Feb 20/2010 36 Feb 20/2010 37 Feb 20/2010 38 Feb 20/2010 39 Feb 20/2010 40 Feb 20/2010 41 Feb 20/2010 42 Feb 20/2010 27-81-00 201 Feb 20/2010 202 Feb 20/2010 R 203 May 20/2011 R 204 May 20/2011 R 205 May 20/2011 206 Feb 20/2010 207 Feb 20/2010 R 208 May 20/2011 209 Feb 20/2010 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 27-81-00 501 Feb 20/2010 502 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

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### CHAPTER 27 FLIGHT CONTROLS27-81-00 (cont) 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 May 20/2010 514 Feb 20/2010 515 Feb 20/2010 516 Feb 20/2010 517 Feb 20/2010 518 Feb 20/2010 519 Feb 20/2010 520 Feb 20/2010 521 Feb 20/2010 522 Feb 20/2010 523 May 20/2010 524 Feb 20/2010 525 Feb 20/2010 526 Feb 20/2010 527 Feb 20/2010 528 Feb 20/2010 529 Feb 20/2010 530 Feb 20/2010 531 Feb 20/2010 532 Feb 20/2010 533 Feb 20/2010 534 Feb 20/2010 535 Feb 20/2010 536 Feb 20/2010 537 Feb 20/2010 538 Feb 20/2010 539 Feb 20/2010 540 Feb 20/2010 541 Feb 20/2010 27-81-00 (cont) 542 Feb 20/2010 543 Feb 20/2010 544 Feb 20/2010 545 Feb 20/2010 546 Feb 20/2010 547 Feb 20/2010 548 Feb 20/2010 549 Feb 20/2010 550 Feb 20/2010 551 Feb 20/2010 552 Feb 20/2010 553 Feb 20/2010 554 Feb 20/2010 555 Feb 20/2010 556 Feb 20/2010 557 Feb 20/2010 558 Feb 20/2010 559 Feb 20/2010 560 Feb 20/2010 561 Feb 20/2010 562 Feb 20/2010 563 Feb 20/2010 564 Feb 20/2010 27-81-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 27-81-01 (cont) 416 Feb 20/2010 417 Feb 20/2010 418 May 20/2010 419 May 20/2010 420 May 20/2010 421 May 20/2010 422 May 20/2010 423 May 20/2010 424 May 20/2010 425 May 20/2010 426 May 20/2010 427 May 20/2010 428 May 20/2010 429 May 20/2010 430 May 20/2010 431 May 20/2010 432 May 20/2010 433 May 20/2010 434 May 20/2010 27-81-01 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-81-02 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

Page 23 May 20/2011 D633N165
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### CHAPTER 27 FLIGHT CONTROLS27-81-02 (cont) 415 Feb 20/2010 416 Feb 20/2010 417 Feb 20/2010 418 Feb 20/2010 419 Feb 20/2010 420 Feb 20/2010 421 Feb 20/2010 422 Feb 20/2010 423 Feb 20/2010 424 Feb 20/2010 425 Feb 20/2010 426 Feb 20/2010 427 Feb 20/2010 428 Feb 20/2010 429 Feb 20/2010 430 Feb 20/2010 431 Feb 20/2010 432 Feb 20/2010 433 Feb 20/2010 434 Feb 20/2010 27-81-02 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 BLANK 27-81-06 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 208 Feb 20/2010 209 Feb 20/2010 210 Feb 20/2010 R 211 May 20/2011 27-81-06 (cont) R 212 May 20/2011 O 213 May 20/2011 O 214 May 20/2011 215 Feb 20/2010 216 Feb 20/2010 217 Feb 20/2010 218 Feb 20/2010 219 Feb 20/2010 220 BLANK 27-81-07 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 R 415 May 20/2011 R 416 May 20/2011 417 Jan 20/2011 418 Jan 20/2011 R 419 May 20/2011 420 Jan 20/2011 421 Jan 20/2011 422 Jan 20/2011 423 Jan 20/2011 424 Jan 20/2011 27-81-08 201 Feb 20/2010 202 Feb 20/2010 203 Feb 20/2010 204 Feb 20/2010 27-81-08 (cont) 205 Feb 20/2010 206 Feb 20/2010 207 Feb 20/2010 R 208 May 20/2011 R 209 May 20/2011 210 Feb 20/2010 211 Feb 20/2010 212 Feb 20/2010 213 Feb 20/2010 214 BLANK 27-81-09 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 R 407 May 20/2011 R 408 May 20/2011 O 409 May 20/2011 O 410 May 20/2011 A 411 May 20/2011 A 412 BLANK 27-81-10 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 27-81-10 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

Page 24 May 20/2011 D633N165
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### CHAPTER 27 FLIGHT CONTROLS27-81-10 (cont) 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 BLANK 27-81-11 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 27-81-11 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 605 Feb 20/2010 606 Feb 20/2010 607 Feb 20/2010 608 Feb 20/2010 609 Feb 20/2010 610 Feb 20/2010 27-81-12 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 BLANK 27-81-12 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 BLANK 27-81-13 401 Feb 20/2010 402 Feb 20/2010 27-81-13 (cont) 403 Feb 20/2010 404 BLANK 27-81-13 601 Feb 20/2010 602 Feb 20/2010 603 Feb 20/2010 604 Feb 20/2010 27-81-15 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 27-81-18 R 401 May 20/2011 402 Jan 20/2011 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 R 412 May 20/2011 413 Jan 20/2011 414 Jan 20/2011 415 Jan 20/2011 416 Jan 20/2011 417 Jan 20/2011 418 Jan 20/2011 419 Jan 20/2011 420 Jan 20/2011 421 Jan 20/2011 422 BLANK 27-81-18 601 Feb 20/2010 R 602 May 20/2011 603 Jan 20/2011 604 Jan 20/2011 605 Jan 20/2011 606 Jan 20/2011 607 Jan 20/2011 608 Jan 20/2011 609 Feb 20/2010 610 Feb 20/2010 611 Feb 20/2010 612 Feb 20/2010 613 Feb 20/2010 614 Feb 20/2010 615 Feb 20/2010 616 Feb 20/2010 617 Feb 20/2010 618 Feb 20/2010 619 Feb 20/2010 620 Feb 20/2010 621 Feb 20/2010 622 Feb 20/2010 623 Feb 20/2010 624 Feb 20/2010 27-81-20 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 Feb 20/2010 27-81-20 801 Feb 20/2010 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

Page 25 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details Subject/Page Date COC Subject/Page Date COC Subject/Page Date COC 

### CHAPTER 27 FLIGHT CONTROLS27-81-20 (cont) 802 Feb 20/2010 27-81-41 401 Jan 20/2011 402 Jan 20/2011 403 Jan 20/2011 404 Jan 20/2011 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Jan 20/2011 411 Feb 20/2010 412 Feb 20/2010 413 Feb 20/2010 414 Feb 20/2010 415 Feb 20/2010 416 Feb 20/2010 417 Feb 20/2010 418 Feb 20/2010 419 Jan 20/2011 420 Jan 20/2011 421 Feb 20/2010 422 BLANK 27-81-41 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 Feb 20/2010 511 Feb 20/2010 512 Feb 20/2010 513 Feb 20/2010 514 Feb 20/2010 27-81-42 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 408 Feb 20/2010 409 Feb 20/2010 410 Feb 20/2010 411 Feb 20/2010 412 BLANK 27-81-42 501 Feb 20/2010 502 Feb 20/2010 503 Feb 20/2010 504 Feb 20/2010 505 Feb 20/2010 506 Feb 20/2010 507 Feb 20/2010 508 Feb 20/2010 509 Feb 20/2010 510 BLANK 27-88-00 1 Feb 20/2010 2 Feb 20/2010 3 Feb 20/2010 4 Feb 20/2010 27-88-00 501 Feb 20/2010 502 BLANK 27-88-01 401 Feb 20/2010 402 Feb 20/2010 403 Feb 20/2010 404 Feb 20/2010 405 Feb 20/2010 406 Feb 20/2010 407 Feb 20/2010 27-88-01 (cont) 408 BLANK 

## 757 AIRCRAFT MAINTENANCE MANUAL

A = Added, R = Revised, D = Deleted, O = Overflow, C = Customer Originated Change 

# 27-EFFECTIVE PAGES

Page 26 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details Subject/Page Date COC Subject/Page Date COC Subject/Page Date COC 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect

FLIGHT CONTROLS - DESCRIPTION AND OPERATION 27-00-00 1 TBC ALL



### FLIGHT CONTROL CABLES - DESCRIPTION AND OPERATION 27-00-01 1 TBC ALL



### FLIGHT CONTROL CABLES - MAINTENANCE PRACTICES 27-00-01 201 TBC ALL



### Flight Control Cables Data

TASK 27-00-01-992-001 201 TBC ALL



### FLIGHT CONTROL SHEAR RIVETS - MAINTENANCE PRACTICES 27-00-02 201 TBC ALL



### Flight Control Shear Rivets References

TASK 27-00-02-302-003 201 TBC ALL



### FLIGHT CONTROL LATERAL TRIM CORRECTION - ADJUSTMENT TEST 27-01-00 501 TBC ALL



### Excessive Lateral Trim Adjustment

TASK 27-01-00-825-001 502 TBC ALL



### FLIGHT CONTROLS SURFACE - INSPECTION/CHECK 27-02-00 601 TBC ALL



### Elevator Freeplay - Check

TASK 27-02-00-736-001 601 TBC ALL


### Rudder Freeplay - Check

TASK 27-02-00-736-025 610 TBC ALL


### Aileron Freeplay - Check

TASK 27-02-00-736-053 615 TBC ALL


### Spoiler Freeplay - Check

TASK 27-02-00-736-065 618 TBC ALL



### FLIGHT CONTROL SYSTEM ELECTRONICS UNIT (CSEU) - DESCRIPTION AND OPERATION 27-09-00 1 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 1 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect FLIGHT CONTROL SYSTEM ELECTRONICS UNIT (CSEU) - MAINTENANCE PRACTICES 27-09-00 201 TBC ALL



### Remove the Module

TASK 27-09-00-002-001 201 TBC ALL



### Install the Module

TASK 27-09-00-402-007 206 TBC ALL



### CSEU Modules Installation Test

TASK 27-09-00-712-014 208 TBC ALL



### AILERON AND AILERON TRIM CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-11-00 1 TBC ALL



### AILERON AND AILERON TRIM CONTROL SYSTEM - ADJUSTMENT/TEST 27-11-00 501 TBC ALL



### Operational Test - Aileron and Aileron Trim-Control System

TASK 27-11-00-715-001 501 TBC ALL



### Adjust the Aileron and Aileron Trim Control System

TASK 27-11-00-825-030 508 TBC ALL



### System Test - Aileron and Aileron Trim Control System

TASK 27-11-00-735-091 517 TBC ALL



### System Test - Control Wheel Damper

TASK 27-11-00-725-271 526 TBC ALL POST SB 757-27A0146 

### Aileron Bus Force Limiter and the Aileron Control Override Mechanism - Test

TASK 27-11-00-715-183 529 TBC ALL



### Single Hydraulic System Aileron Control - Test

TASK 27-11-00-715-193 530 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 2 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect LATERAL CONTROL WHEEL - REMOVAL/ INSTALLATION 27-11-02 401 TBC ALL



### Remove the Aileron Control Wheel

TASK 27-11-02-024-001 401 TBC ALL



### Install the Aileron Control Wheel

TASK 27-11-02-424-010 405 TBC ALL



### LATERAL CONTROL WHEEL INSPECTION/ CHECK 27-11-02 601 TBC ALL



### Lateral Control Wheel Freeplay - Check

TASK 27-11-02-226-011 601 TBC ALL



### AILERON CONTROL DRUM ASSEMBLY - MAINTENANCE PRACTICES 27-11-03 201 TBC ALL



### Remove Aileron Control Drum and Components

TASK 27-11-03-022-005 201 TBC ALL



### Install Aileron Control Drum and Components

TASK 27-11-03-422-018 212 TBC ALL



### Aileron Control Drums and Bus Force Limiter - Test

TASK 27-11-03-722-072 217 TBC ALL



### LATERAL CONTROL FEEL, CENTERING, AND TRIM MECHANISM - MAINTENANCE PRACTICES 27-11-14 201 TBC ALL



### Feel, Centering, and Trim Mechanism and Its Components - Removal

TASK 27-11-14-022-008 201 TBC ALL



### Feel, Centering, and Trim Mechanism and Its Components - Installation

TASK 27-11-14-422-022 207 TBC ALL



### Feel, Centering, and Trim Mechanism - Adjustment/Test

TASK 27-11-14-822-070 211 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 3 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect LATERAL CONTROL OVERRIDE MECHANISM - REMOVAL/INSTALLATION 27-11-16 401 TBC ALL



### Lateral Control Override Mechanism - Removal

TASK 27-11-16-024-001 401 TBC ALL



### Lateral Control Override Mechanism - Installation

TASK 27-11-16-424-013 406 TBC ALL



### AILERON QUADRANT AND OVERRIDE MECHANISM - REMOVAL/INSTALLATION 27-11-17 401 TBC ALL



### Remove the Aileron Quadrant and Override Mechanism

TASK 27-11-17-024-001 401 TBC ALL



### Install Aileron Quadrant and Override Mechanism

TASK 27-11-17-424-011 404 TBC ALL



### AILERON QUADRANT AND OVERRIDE MECHANISM INSPECTION/CHECK 27-11-17 601 TBC ALL



### Aileron Quadrant and Override Mechanism Wear Limits

TASK 27-11-17-206-001 601 TBC ALL



### AILERON POWER CONTROL ACTUATOR (PCA) AND REACTION LINK - MAINTENANCE PRACTICES 27-11-20 201 TBC ALL



### Aileron PCA and Reaction Link - Removal

TASK 27-11-20-022-006 201 TBC ALL



### Aileron PCA and Reaction Link - Installation

TASK 27-11-20-422-018 209 TBC ALL



### Aileron PCA Filter - Removal

TASK 27-11-20-022-046 214 TBC ALL



### Aileron PCA Filter - Installation

TASK 27-11-20-422-065 215 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 4 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect AILERON POWER CONTROL ACTUATOR(PCA) AND REACTION LINKINSPECTION/CHECK 27-11-20 601 TBC ALL



### Examine The Aileron PCA For Wear

TASK 27-11-20-206-001 601 TBC ALL



### Examine The Aileron-PCA ReactionLink Assembly For Wear

TASK 27-11-20-206-003 607 TBC ALL



### AILERON - REMOVAL/INSTALLATION 27-11-21 401 TBC ALL 

### Remove the Aileron

TASK 27-11-21-024-001 401 TBC ALL



### Install the Aileron

TASK 27-11-21-424-013 405 TBC ALL



### AILERON - INSPECTION/CHECK 27-11-21 601 TBC ALL 

### Examine the Aileron for wear

TASK 27-11-21-206-001 601 TBC ALL



### AILERON POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-18-00 1 TBC ALL



### AILERON POSITION INDICATING SYSTEM - ADJUSTMENT/TEST 27-18-00 501 TBC ALL



### Operational Test - Aileron Position Indicating System

TASK 27-18-00-715-001 501 TBC ALL



### Adjustment - Aileron Position Indicating System

TASK 27-18-00-825-064 508 TBC ALL



### AILERON POSITION TRANSMITTER - REMOVAL/INSTALLATION 27-18-01 401 TBC ALL



### Remove Aileron Position Transmitter

TASK 27-18-01-024-003 401 TBC ALL



### Install Aileron Position Transmitter

TASK 27-18-01-424-014 404 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 5 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect RUDDER AND RUDDER TRIM CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-21-00 1 1 TBC ALL



### RUDDER AND RUDDER TRIM CONTROL SYSTEM - ADJUSTMENT/TEST 27-21-00 1 501 TBC ALL



### Operational Test - Rudder and Rudder Trim Control System

TASK 27-21-00-715-001-001 1 501 TBC ALL



### Adjustment - Rudder and Rudder Trim Control System

TASK 27-21-00-825-055-001 1 526 TBC ALL



### System Test - Rudder and Rudder Trim Control

TASK 27-21-00-735-169-001 1 550 TBC ALL



### RUDDER PEDALS - REMOVAL/ INSTALLATION 27-21-02 401 TBC ALL



### Remove Rudder Pedal Assembly

TASK 27-21-02-024-003 401 TBC ALL



### Install Rudder Pedal Assembly

TASK 27-21-02-424-013 407 TBC ALL



### RUDDER PEDAL ADJUSTMENT CRANK - REMOVAL/INSTALLATION 27-21-03 401 TBC ALL



### Remove Rudder Pedal Adjustment Crank

TASK 27-21-03-024-006 401 TBC ALL



### Install Rudder Pedal Adjustment Crank

TASK 27-21-03-424-015 405 TBC ALL



### RUDDER JACKSHAFT AND FORWARD QUADRANT - REMOVAL/INSTALLATION 27-21-05 401 TBC ALL



### Remove Rudder Jackshaft and Forward Quadrant

TASK 27-21-05-024-052 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 6 May 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install Rudder Jackshaft and Forward Quadrant

TASK 27-21-05-424-028 410 TBC ALL



### AFT QUADRANT, FEEL, CENTERING AND TRIM MECHANISM - MAINTENANCE PRACTICES 27-21-06 201 TBC ALL



### Aft Quadrant and Components - Removal

TASK 27-21-06-022-001 201 TBC ALL



### Aft Quadrant and Components - Installation

TASK 27-21-06-422-017 210 TBC ALL



### RUDDER RATIO CHANGER MECHANISM - MAINTENANCE PRACTICES 27-21-12 201 TBC ALL



### Remove Rudder Ratio-Changer Mechanism and Components

TASK 27-21-12-022-011 201 TBC ALL



### Install Rudder Ratio-Changer Mechanism

TASK 27-21-12-422-032 210 TBC ALL



### Remove the Rudder Ratio-Changer Linear Variable Differential Transducer (LVDT)

TASK 27-21-12-022-088 216 TBC ALL



### Install the Rudder Ratio-Changer LVDT

TASK 27-21-12-422-079 218 TBC ALL


### Remove the Support Clevis of the Rudder Ratio Changer

TASK 27-21-12-002-093 220 TBC ALL



### Install the Rudder Ratio Actuator Changer Support Clevis

TASK 27-21-12-402-099 221 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 7 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect RUDDER RATIO CHANGER ACTUATOR (RRCA) - MAINTENANCE PRACTICES 27-21-13 201 TBC ALL



### Remove the Rudder Ratio Changer Actuator (RRCA) or its Parts

TASK 27-21-13-002-001 201 TBC ALL



### Install the Rudder Ratio Changer Actuator (RRCA) or its Parts

TASK 27-21-13-402-032 208 TBC ALL



### YAW DAMPER SUMMING LEVER - REMOVAL/INSTALLATION 27-21-17 401 TBC ALL


### Yaw Damper Summing Lever - Removal

TASK 27-21-17-024-005 401 TBC ALL



### Yaw Damper Summing Lever - Installation

TASK 27-21-17-414-014 408 TBC ALL



### YAW DAMPER SUMMING LEVER - INSPECTION/CHECK 27-21-17 601 TBC ALL



### Yaw Damper Shear Pin (or Rivets) - Check

TASK 27-21-17-726-001 601 TBC ALL



### Yaw Damper Summing Lever - Inspection

TASK 27-21-17-736-011 604 TBC ALL



### RUDDER THERMAL COMPENSATING LINKAGE - REMOVAL/INSTALLATION 27-21-19 401 TBC ALL


### Rudder Thermal Compensating Linkage and Its Components - Removal

TASK 27-21-19-024-001 401 TBC ALL



### Rudder Thermal Compensating Linkage and Its Components - Installation

TASK 27-21-19-424-020 410 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 8 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect RUDDER POWER CONTROL ACTUATOR (PCA) AND COMPONENTS - MAINTENANCE PRACTICES 27-21-20 201 TBC ALL



### Rudder PCA and Reaction Link - Removal

TASK 27-21-20-022-001 201 TBC ALL



### Rudder PCA and Reaction Link - Installation

TASK 27-21-20-422-025 210 TBC ALL



### RUDDER - REMOVAL/INSTALLATION 27-21-21 401 TBC ALL 

### Rudder - Removal

TASK 27-21-21-024-039 401 TBC ALL



### Rudder - Installation

TASK 27-21-21-424-010 409 TBC ALL



### RUDDER INSPECTION/CHECK 27-21-21 601 TBC ALL 

### Rudder - Wear Limits

TASK 27-21-21-206-001 601 TBC ALL



### AILERON AND RUDDER TRIM CONTROL MODULE - MAINTENANCE PRACTICES 27-21-23 201 TBC ALL



### Aileron and Rudder Trim Control Module - Removal

TASK 27-21-23-022-001 201 TBC ALL



### Aileron and Rudder Trim Control Module - Installation

TASK 27-21-23-422-007 203 TBC ALL



### Rudder Trim Indicator - Removal

TASK 27-21-23-002-030 204 TBC ALL



### Rudder Trim Indicator - Installation

TASK 27-21-23-402-037 205 TBC ALL



### Clean the Rudder Trim Switch

TASK 27-21-23-102-017 207 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 9 May 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect RUDDER AND ELEVATOR HYDRAULIC SYSTEMS - DESCRIPTION AND OPERATION 27-23-00 1 TBC ALL



### RUDDER AND ELEVATOR HYDRAULIC SYSTEMS - ADJUSTMENT/TEST 27-23-00 501 TBC ALL



### Rudder/Elevator Shutoff Valves - System Test

TASK 27-23-00-735-001 501 TBC ALL



### Rudder and Elevator PCA Monitoring - System Test

TASK 27-23-00-735-022 508 TBC ALL



### RUDDER AND ELEVATOR HYDRAULIC SHUTOFF VALVES - MAINTENANCE PRACTICES 27-23-01 201 TBC ALL



### Rudder and Elevator Hydraulic Shutoff Valves - Removal

TASK 27-23-01-022-003 201 TBC ALL



### Rudder and Elevator Hydraulic Shutoff Valves - Installation

TASK 27-23-01-422-013 204 TBC ALL



### RUDDER AND ELEVATOR PCA MONITOR MODULE - REMOVAL/INSTALLATION 27-23-02 401 TBC ALL



### Rudder/Elevator PCA Monitor Module - Removal

TASK 27-23-02-024-005 401 TBC ALL



### Rudder/Elevator PCA Monitor Module - Installation

TASK 27-23-02-424-012 404 TBC ALL



### RUDDER AND ELEVATOR HYDRAULIC FUSE - MAINTENANCE PRACTICES 27-23-51 201 TBC ALL



### Remove the Rudder Hydraulic Fuse

TASK 27-23-51-022-001 201 TBC ALL



### Install the Rudder Hydraulic Fuse

TASK 27-23-51-402-006 202 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 10 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Elevator Hydraulic Fuses - Removal

TASK 27-23-51-002-022 204 TBC ALL



### Elevator Hydraulic Fuses - Installation

TASK 27-23-51-402-026 205 TBC ALL



### RUDDER POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-28-00 1 TBC ALL



### RUDDER POSITION INDICATING SYSTEM - ADJUSTMENT/TEST 27-28-00 501 TBC ALL


### Rudder Position Indicating System - Operational Test

TASK 27-28-00-715-001 501 TBC ALL



### Rudder Position Indicating System - Adjustment

TASK 27-28-00-825-011 506 TBC ALL



### RUDDER POSITION TRANSMITTER - MAINTENANCE PRACTICES 27-28-01 201 TBC ALL



### Rudder Position Transmitter - Removal

TASK 27-28-01-022-006 201 TBC ALL



### Rudder Position Transmitter - Installation

TASK 27-28-01-422-016 205 TBC ALL



### ELEVATOR CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-31-00 1 TBC ALL



### ELEVATOR CONTROL SYSTEM - ADJUSTMENT/TEST 27-31-00 501 TBC ALL



### Elevator Control System - Operational Test

TASK 27-31-00-715-331 501 TBC ALL



### Elevator Control System - Adjustment

TASK 27-31-00-825-031 526 TBC ALL


### Elevator Control System - System Test

TASK 27-31-00-725-090 554 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 11 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Elevator Column and Quadrant Override Test

TASK 27-31-00-735-199 592 TBC ALL



### Elevator Pressure Bypass Valve Test

TASK 27-31-00-735-201 596 TBC ALL


### Single Hydraulic Source - Test

TASK 27-31-00-735-250 598.5 TBC ALL



### ELEVATOR - REMOVAL/INSTALLATION 27-31-01 401 TBC ALL 

### Remove the Elevator

TASK 27-31-01-024-001 401 TBC ALL



### Install the Elevator

TASK 27-31-01-424-028 410 TBC ALL



### ELEVATOR - INSPECTION/CHECK 27-31-01 601 TBC ALL 

### Elevator Hinge Wear Limits

TASK 27-31-01-226-001 601 TBC ALL



### ELEVATOR INDEX PLATE - REMOVAL/ INSTALLATION 27-31-02 401 TBC ALL



### Remove the Index Plate

TASK 27-31-02-024-001 401 TBC ALL



### Install the Index Plate

TASK 27-31-02-424-014 406 TBC ALL



### ASYMMETRY LIMITER ACTUATOR - REMOVAL/INSTALLATION 27-31-03 401 TBC ALL



### Remove the Asymmetry Limiter Actuator

TASK 27-31-03-024-001 401 TBC ALL



### Install the Asymmetry Limiter Actuator

TASK 27-31-03-424-016 406 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 12 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect ELEVATOR POWER CONTROL ACTUATOR (PCA)/REACTION LINK/IDLER LINK - REMOVAL/INSTALLATION 27-31-05 401 TBC ALL



### Remove the Power Control Actuator (PCA)

TASK 27-31-05-024-001 401 TBC ALL



### Install the Power Control Actuator (PCA)

TASK 27-31-05-424-067 410 TBC ALL



### Remove the Elevator Reaction Link

TASK 27-31-05-024-055 413 TBC ALL



### Install the Elevator Reaction Link

TASK 27-31-05-424-068 417 TBC ALL



### Remove the Elevator Idler Link

TASK 27-31-05-024-099 421 TBC ALL



### Install the Elevator Idler Link

TASK 27-31-05-424-117 424 TBC ALL



### ELEVATOR POWER CONTROL ACTUATOR/ REACTION LINK - INSPECTION/CHECK 27-31-05 601 TBC ALL



### PCA/Elevator Wear Limits

TASK 27-31-05-226-001 601 TBC ALL



### PCA Input Linkage Wear Limits

TASK 27-31-05-226-002 605 TBC ALL



### ELEVATOR POWER CONTROL ACTUATOR (PCA) INPUT LINKAGE - REMOVAL/ INSTALLATION 27-31-06 401 TBC ALL



### Remove the PCA Input Linkage

TASK 27-31-06-024-001 401 TBC ALL


### Install the PCA Input Linkage

TASK 27-31-06-424-024 408 TBC ALL



### CONTROL COLUMN - REMOVAL/ INSTALLATION 27-31-10 401 TBC ALL



### Remove the Control Column

TASK 27-31-10-024-001 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 13 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Control Column

TASK 27-31-10-424-019 406 TBC ALL



### CONTROL COLUMN - INSPECTION/CHECK 27-31-10 601 TBC ALL 

### Control Column Backlash Check

TASK 27-31-10-716-015 601 TBC ALL



### CONTROL COLUMN TORQUE TUBE BEARING - REMOVAL/INSTALLATION 27-31-11 401 TBC ALL


### Remove the Control Column Torque Tube Bearings

TASK 27-31-11-004-001 401 TBC ALL



### Install the Control Column Torque Tube Bearings

TASK 27-31-11-404-016 402 TBC ALL



### ELEVATOR FORWARD QUADRANT/ TENSION REGULATOR - REMOVAL/ INSTALLATION 27-31-12 401 TBC ALL



### Remove the Quadrant/Tension Regulator

TASK 27-31-12-024-001 401 TBC ALL



### Install the Quadrant/Tension Regulator

TASK 27-31-12-424-021 408 TBC ALL



### ELEVATOR PRESSURE REDUCER/BYPASS VALVE - REMOVAL/INSTALLATION 27-31-13 401 TBC ALL



### Remove the Pressure Reducer Valve and the Bypass Valve

TASK 27-31-13-024-031 401 TBC ALL



### Install the Pressure Reducer Valve and the Bypass Valve

TASK 27-31-13-424-017 409 TBC ALL



### ELEVATOR AFT QUADRANTS - REMOVAL/ INSTALLATION 27-31-15 401 TBC ALL



### Remove the Aft Quadrants

TASK 27-31-15-024-001 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 14 May 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Aft Quadrant

TASK 27-31-15-424-027 408 TBC ALL



### ELEVATOR CONTROL AFT MECHANISM TORQUE BOX - REMOVAL/ INSTALLATION 27-31-16 401 TBC ALL



### Remove the Torque Box

TASK 27-31-16-024-001 401 TBC ALL



### Install the Torque Box

TASK 27-31-16-424-062 409 TBC ALL



### ELEVATOR FEEL UNIT - MAINTENANCE PRACTICE 27-31-17 201 TBC ALL



### Remove the Feel Unit

TASK 27-31-17-022-001 201 TBC ALL



### Install the Feel Unit

TASK 27-31-17-422-020 211 TBC ALL



### Remove the Feel Unit Roller Bearing

TASK 27-31-17-022-036 213 TBC ALL



### Install the Feel Unit Roller Bearing

TASK 27-31-17-402-053 216 TBC ALL



### ELEVATOR FEEL ACTUATOR - REMOVAL/ INSTALLATION 27-31-18 401 TBC ALL



### Remove the Feel Actuator

TASK 27-31-18-024-001 401 TBC ALL



### Install the Feel Actuator

TASK 27-31-18-424-011 407 TBC ALL



### ELEVATOR FEEL COMPUTER - REMOVAL/ INSTALLATION 27-31-19 401 TBC ALL


### Remove the Feel Computer

TASK 27-31-19-024-001 401 TBC ALL


### Install the Feel Computer

TASK 27-31-19-424-015 406 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 15 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect ELEVATOR NEUTRAL SHIFT AND OVERRIDE MECHANISM - REMOVAL/ INSTALLATION 27-31-21 401 TBC ALL



### Remove the Neutral Shift and Override Mechanism

TASK 27-31-21-024-001 401 TBC ALL



### Install the Neutral Shift and Override Mechanism

TASK 27-31-21-424-018 407 TBC ALL



### ELEVATOR NEUTRAL SHIFT AND OVERRIDE MECHANISM - INSPECTION/ CHECK 27-31-21 601 TBC ALL



### Wear Limits for the Elevator Neutral Shift and Override Mechanism

TASK 27-31-21-226-001 601 TBC ALL



### CONTROL COLUMN OVERRIDE ASSEMBLY - ADJUSTMENT/TEST 27-31-23 501 TBC ALL



### Adjust the Override Assembly

TASK 27-31-23-825-001 501 TBC ALL



### STALL WARNING SYSTEM - DESCRIPTION AND OPERATION 27-32-00 4 1 TBC ALL



### STALL WARNING SYSTEM - ADJUSTMENT/ TEST 27-32-00 5 501 TBC ALL


### Operational Test - Stall Warning System

TASK 27-32-00-715-001-005 5 501 TBC ALL



### System Test - Stall Warning System

TASK 27-32-00-735-016-005 5 511 TBC ALL



### STALL WARNING MODULE - REMOVAL/ INSTALLATION 27-32-01 401 TBC ALL



### Remove the Stall Warning Module

TASK 27-32-01-024-001 401 TBC ALL



### Install the Stall Warning Module

TASK 27-32-01-424-005 404 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 16 May 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect WARNING ELECTRONIC UNIT (WEU) BITE MODULE - REMOVAL/INSTALLATION 27-32-02 401 TBC ALL



### Remove WEU BITE Module

TASK 27-32-02-024-001 401 TBC ALL



### Install WEU BITE Module

TASK 27-32-02-424-008 404 TBC ALL



### CONTROL COLUMN SHAKER - REMOVAL/ INSTALLATION 27-32-05 401 TBC ALL



### Remove Control Column Shaker

TASK 27-32-05-024-001 401 TBC ALL



### Install Control Column Shaker

TASK 27-32-05-424-013 404 TBC ALL



### Test Control Column Shaker

TASK 27-32-05-714-006 404 TBC ALL



### ELEVATOR POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-38-00 1 TBC ALL



### ELEVATOR POSITION INDICATING SYSTEM - ADJUSTMENT/TEST 27-38-00 501 TBC ALL



### Operational Test - Elevator Position Indicating System

TASK 27-38-00-715-002 501 TBC ALL



### Adjustment - Elevator Position Indicating System

TASK 27-38-00-825-009 507 TBC ALL



### ELEVATOR POSITION TRANSMITTER - REMOVAL/INSTALLATION 27-38-02 401 TBC ALL



### Remove the Position Transmitters

TASK 27-38-02-024-001 401 TBC ALL



### Install the Position Transmitter

TASK 27-38-02-424-018 408 TBC ALL



### HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-41-00 1 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 17 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - ADJUSTMENT/TEST 27-41-00 501 TBC ALL



### Horizontal Stabilizer Trim Control System - Operational Test

TASK 27-41-00-715-001 501 TBC ALL



### Electrical Travel Limits and Stabilizer Trim Cutoff Switch Tests

TASK 27-41-00-735-B52 517 TBC ALL



### Horizontal Stabilizer Trim Control System - Adjustment

TASK 27-41-00-825-467 525 TBC ALL



### Horizontal Stabilizer Trim Control System - System Test

TASK 27-41-00-735-468 529 TBC ALL



### Stabilizer Trim Secondary Brake Test

TASK 27-41-00-715-643 550 TBC ALL



### Stabilizer Trim Shutoff Switches Test

TASK 27-41-00-715-644 551 TBC ALL


### Stabilizer Trim Override Capability with Split Control Column Commands Test

TASK 27-41-00-715-647 553 TBC ALL



### Electrical Travel Limits and Stabilizer Trim Cutoff Switch Tests

TASK 27-41-00-735-648 555 TBC ALL



### Horizontal Stabilizer Alternate Electric Trim System - Operational Check

TASK 27-41-00-715-679 564 TBC ALL



### STABILIZER TRIM CONTROL WHEEL SWITCH - REMOVAL/INSTALLATION 27-41-01 401 TBC ALL



### Remove the Control Wheel Switch

TASK 27-41-01-024-001 401 TBC ALL



### Install the Control Wheel Switch

TASK 27-41-01-424-011 404 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 18 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect ALTERNATE STABILIZER TRIM SWITCH - REMOVAL/INSTALLATION 27-41-03 401 TBC ALL



### Remove the Alternate Stabilizer Trim Switch

TASK 27-41-03-024-001 401 TBC ALL



### Install the Alternate Stabilizer Trim Switch

TASK 27-41-03-424-011 404 TBC ALL



### STABILIZER TRIM CONTROL MODULE - MAINTENANCE PRACTICES 27-41-05 201 TBC ALL



### Remove the Stabilizer Trim Control Modules (STCMs) and the Solenoid Valves

TASK 27-41-05-022-001 201 TBC ALL



### Install the Stabilizer Trim Control Modules (STCMs) and the Solenoid Valves

TASK 27-41-05-422-023 206 TBC ALL



### STABILIZER TRIM CONTROL MODULE BRAKE PRESSURE SWITCH - REMOVAL/ INSTALLATION 27-41-07 401 TBC ALL



### Remove the Brake Pressure Switch

TASK 27-41-07-024-001 401 TBC ALL



### Install the Brake Pressure Switch

TASK 27-41-07-424-021 405 TBC ALL



### STABILIZER TRIM BALLSCREW ACTUATOR - REMOVAL/INSTALLATION 27-41-10 401 TBC ALL



### Remove the Stabilizer Ballscrew Actuator

TASK 27-41-10-024-001 401 TBC ALL



### Install the Stabilizer Ballscrew Actuator

TASK 27-41-10-424-021 410 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 19 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect STABILIZER TRIM BALLSCREW FREEPLAY 27-41-10 601 TBC ALL 

### Check for Stabilizer Ballscrew to Ballnut Freeplay

TASK 27-41-10-226-052 601 TBC ALL



### Stabilizer Ballscrew Assembly Detailed Visual Inspection

TASK 27-41-10-226-069 607 TBC ALL



### STABILIZER TRIM DRIVE HYDRAULIC MOTOR - REMOVAL/INSTALLATION 27-41-11 401 TBC ALL



### Remove the Hydraulic Motor

TASK 27-41-11-024-001 401 TBC ALL



### Install the Hydraulic Motor

TASK 27-41-11-424-012 404 TBC ALL



### STABILIZER TRIM SECONDARY BRAKE - REMOVAL/INSTALLATION 27-41-13 401 TBC ALL


### Remove the Secondary Brake

TASK 27-41-13-024-001 401 TBC ALL



### Install the Secondary Brake

TASK 27-41-13-424-012 404 TBC ALL



### STABILIZER TRIM UPPER AND LOWER GIMBAL - INSPECTION/CHECK 27-41-14 601 TBC ALL



### Inspect the Stabilizer Trim Upper and Lower Gimbals

TASK 27-41-14-216-001 601 TBC ALL



### Stabilizer Trim Upper and Lower Gimbal Wear Limits

TASK 27-41-14-226-015 611 TBC ALL



### HORIZONTAL STABILIZER ALIGNMENT TABS - REMOVAL/INSTALLATION 27-41-17 401 TBC ALL



### Install the Stabilizer Alignment Tabs

TASK 27-41-17-424-001 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 20 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect STABILIZER TRIM POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-48-00 1 TBC ALL



### STABILIZER TRIM POSITION INDICATING SYSTEM - ADJUSTMENT/TEST 27-48-00 501 TBC ALL



### Stabilizer Trim Position Indicating System - Operational Test

TASK 27-48-00-715-001 501 TBC ALL



### Stabilizer Takeoff Warning System - Operational Test

TASK 27-48-00-715-143 507 TBC ALL



### Stabilizer Trim Position Indicating System - Adjustment

TASK 27-48-00-825-040 509 TBC ALL



### Stabilizer Trim Position Indicating System - System Test

TASK 27-48-00-735-074 512 TBC ALL



### STABILIZER TRIM LIMIT SWITCH AND POSITION TRANSMITTER MODULE - REMOVAL/INSTALLATION 27-48-01 401 TBC ALL



### Remove the Limit Switch and Position Transmitter Module (LSTM)

TASK 27-48-01-024-001 401 TBC ALL



### Install the Limit Switch and Position Transmitter Module (LSTM)

TASK 27-48-01-424-011 404 TBC ALL



### STABILIZER POSITION MODULE - REMOVAL/INSTALLATION 27-48-03 401 TBC ALL



### Remove the Stabilizer Position Module (SPM)

TASK 27-48-03-024-001 401 TBC ALL



### Install the Stabilizer Position Module (SPM)

TASK 27-48-03-424-009 404 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 21 Feb 20/2010 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect STABILIZER TRIM POSITION INDICATOR - REMOVAL/INSTALLATION 27-48-06 401 TBC ALL



### Remove the Position Indicator

TASK 27-48-06-024-001 401 TBC ALL



### Install the Position Indicator

TASK 27-48-06-424-009 404 TBC ALL



### TRAILING EDGE FLAP SYSTEM - DESCRIPTION AND OPERATION 27-51-00 1 TBC ALL



### TRAILING EDGE FLAP SYSTEM - MAINTENANCE PRACTICES 27-51-00 201 TBC ALL


### Deactivation of the Flap Drive System

TASK 27-51-00-042-001 201 TBC ALL



### Operation of the TE Flap System

TASK 27-51-00-862-004 207 TBC ALL



### TRAILING EDGE FLAP SYSTEM - ADJUSTMENT/TEST 27-51-00 501 TBC ALL



### Operational Test of the TE Flap System

TASK 27-51-00-715-001 501 TBC ALL


### Adjustment of the TE Flap System

TASK 27-51-00-825-007 521 TBC ALL


### TE Flap System - System Test

TASK 27-51-00-735-036 526 TBC ALL


### Operational Test of the Flap/Slat Alternate Drive System

TASK 27-51-00-715-167 551 TBC ALL



### TE Flap Load Relief - System Test

TASK 27-51-00-735-161 553 TBC ALL



### INBOARD TRAILING EDGE FLAP DRIVE SYSTEM - INSPECTION/CHECK 27-51-00 601 TBC ALL


### Inboard TE Flap Angle Tee Gearbox Inspection

TASK 27-51-00-026-001 601 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 22 Jan 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Inboard TE Flap Outboard Tee Gearbox Inspection

TASK 27-51-00-026-013 613 TBC ALL



### Inboard TE Flap Outbd Angle Gearbox Inspection

TASK 27-51-00-026-027 616 TBC ALL



### TE Flap Drive Shaft Inspection

TASK 27-51-00-026-047 619 TBC ALL



### FLAP/SLAT ELECTRONIC UNIT - MAINTENANCE PRACTICES 27-51-01 201 TBC ALL


### Remove Flap/Slat Electronic Unit

TASK 27-51-01-022-006 201 TBC ALL



### Install Flap/Slat Electronic Unit

TASK 27-51-01-422-011 207 TBC ALL



### Test the FSEU

TASK 27-51-01-722-005 208 TBC ALL



### INBOARD TRAILING EDGE FLAP - REMOVAL/INSTALLATION 27-51-02 401 TBC ALL



### Remove the Inboard TE Flap

TASK 27-51-02-024-001 401 TBC ALL



### Install the Inboard TE Flap

TASK 27-51-02-424-021 417 TBC ALL



### INBOARD TRAILING EDGE FLAP - ADJUSTMENT/TEST 27-51-02 501 TBC ALL



### Adjustment for the Inboard Trailing Edge Flap

TASK 27-51-02-825-001 501 TBC ALL



### Inboard Trailing Edge Flap Test

TASK 27-51-02-705-035 527 TBC ALL



### INBOARD TRAILING EDGE FLAPS - INSPECTION/CHECK 27-51-02 601 TBC ALL



### Wear Limits for Inboard Flap Linkage

TASK 27-51-02-226-001 601 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 23 Jan 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Wear Limits for the Aft Flap Tracks of the Inboard Flap

TASK 27-51-02-226-002 614 TBC ALL



### INBOARD TRAILING EDGE FLAP TRACK - REMOVAL/INSTALLATION 27-51-03 401 TBC ALL



### Remove the Inboard and Outboard Flap Tracks of the Inboard TE Flaps

TASK 27-51-03-024-001 401 TBC ALL



### Install the Inboard and Outboard Tracks for the Inboard Flap

TASK 27-51-03-424-020 408 TBC ALL



### TE Flap Track Fuse Pin - Removal

TASK 27-51-03-000-801 411 TBC ALL



### TE Flap Track Fuse Pin - Installation

TASK 27-51-03-400-801 414 TBC ALL



### INBOARD TRAILING EDGE FLAP CARRIAGE - REMOVAL/INSTALLATION 27-51-05 401 TBC ALL



### Remove the Carriages for the Inboard Trailing Edge (TE) Flap

TASK 27-51-05-024-029 401 TBC ALL



### Install the Carriages for the Inboard TE Flap

TASK 27-51-05-424-026 405 TBC ALL



### INBOARD TRAILING EDGE FLAP TRANSMISSIONS - REMOVAL/ INSTALLATION 27-51-06 401 TBC ALL



### Remove the Inboard and Outboard Transmissions for the TE Flap

TASK 27-51-06-024-001 401 TBC ALL



### Install Inboard and Outboard Transmissions for the TE Flap

TASK 27-51-06-424-021 419 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 24 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect INBOARD TRAILING EDGE FLAP DRIVE INBOARD TEE GEARBOX - REMOVAL/ INSTALLATION 27-51-07 401 TBC ALL



### Remove the Inboard Tee Gearbox for the Inboard TE Flap

TASK 27-51-07-024-024 401 TBC ALL



### Install the Inboard Tee Gearbox for the Inboard TE Flap

TASK 27-51-07-424-027 407 TBC ALL



### INBOARD TRAILING EDGE FLAP DRIVE OUTBOARD TEE GEARBOX - REMOVAL/ INSTALLATION 27-51-08 401 TBC ALL



### Remove the Outboard Tee Gearbox for the Inboard TE Flap

TASK 27-51-08-024-001 401 TBC ALL



### Install the Outboard Tee Gearbox for the Inboard TE Flap

TASK 27-51-08-424-004 408 TBC ALL



### INBOARD TRAILING EDGE FLAP DRIVE INBOARD ANGLE GEARBOX - REMOVAL/ INSTALLATION 27-51-09 401 TBC ALL



### Remove the Inboard Angle Gearbox

TASK 27-51-09-024-005 401 TBC ALL



### Install the Inboard Angle Gearbox

TASK 27-51-09-424-013 407 TBC ALL



### INBOARD TRAILING EDGE FLAP DRIVE OUTBOARD ANGLE GEARBOX - REMOVAL/INSTALLATION 27-51-10 401 TBC ALL



### Remove the Outboard Angle Gearbox from the Inboard TE Flap

TASK 27-51-10-024-028 401 TBC ALL



### Install the Outboard Angle Gearbox for the Inboard TE Flap

TASK 27-51-10-424-031 409 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 25 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect INBOARD TRAILING EDGE FLAP BALLSCREW - REMOVAL/INSTALLATION 27-51-11 401 TBC ALL



### Remove the Ballscrew for the Inboard TE Flap

TASK 27-51-11-024-001 401 TBC ALL



### Install the Ballscrew for the Inboard TE Flap

TASK 27-51-11-424-020 410 TBC ALL



### INBOARD TRAILING EDGE FLAP BALLSCREW - INSPECTION/CHECK 27-51-11 601 TBC ALL



### Inboard Trailing Edge Flap Ballscrew Backlash Check

TASK 27-51-11-226-001 601 TBC ALL



### Inboard Trailing Edge Flap Ballscrew Nut Return Tube Check

TASK 27-51-11-226-024 608 TBC ALL



### Inboard Trailing Edge Flap Ballscrew Inspection

TASK 27-51-11-226-049 613 TBC ALL



### INBOARD TRAILING EDGE FLAP-AFT FLAP - REMOVAL/INSTALLATION 27-51-12 401 TBC ALL



### Remove the Aft Flap for the Inboard TE Flap

TASK 27-51-12-024-001 401 TBC ALL



### Install the Aft Flap for the Inboard TE Flap

TASK 27-51-12-424-006 409 TBC ALL



### INBOARD TRAILING EDGE FLAP-AFT FLAP - ADJUSTMENT/TEST 27-51-12 501 TBC ALL



### Inboard Aft Flap Adjustment

TASK 27-51-12-825-001 501 TBC ALL



### Operational Test for the Aft Flap

TASK 27-51-12-715-022 512 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 26 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect INBOARD TRAILING EDGE FLAP AFT FLAP LINKAGE - REMOVAL/INSTALLATION 27-51-13 401 TBC ALL



### Remove the Aft Flap Linkage for the Inboard TE Flap

TASK 27-51-13-024-001 401 TBC ALL



### Install the Aft Flap Linkage for the Inboard TE Flap

TASK 27-51-13-424-005 406 TBC ALL



### OUTBOARD TRAILING EDGE FLAP - REMOVAL/INSTALLATION 27-51-14 401 TBC ALL



### Remove the Outboard TE Flap

TASK 27-51-14-024-001 401 TBC ALL



### Install the Outboard TE Flap

TASK 27-51-14-424-014 409 TBC ALL



### OUTBOARD TRAILING EDGE FLAP - ADJUSTMENT/TEST 27-51-14 501 TBC ALL



### Adjust the Outboard TE Flap

TASK 27-51-14-825-001 501 TBC ALL



### The Outboard Trailing Edge Flap Test

TASK 27-51-14-715-049 523 TBC ALL



### OUTBOARD TRAILING EDGE FLAP TRACK - REMOVAL/INSTALLATION 27-51-15 401 TBC ALL



### Remove the Track for the Outboard TE Flap

TASK 27-51-15-024-001 401 TBC ALL



### Install the Track for the Outboard TE Flap

TASK 27-51-15-424-003 407 TBC ALL



### TE Flap Track Fuse Bolt - Removal

TASK 27-51-15-000-801 410 TBC ALL



### TE Flap Track Fuse Bolt - Installation

TASK 27-51-15-400-801 414 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 27 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect OUTBOARD TE FLAP TRACK - INSPECTION/ CHECK 27-51-15 601 TBC ALL



### Wear Limits for the Outboard TE Flap Tracks

TASK 27-51-15-206-001 601 TBC ALL



### OUTBOARD TRAILING EDGE FLAP CARRIAGE - REMOVAL/INSTALLATION 27-51-16 401 TBC ALL



### Remove the Flap Carriage for the Outboard TE Flap

TASK 27-51-16-024-008 401 TBC ALL



### Install the Flap Carriage for the Outboard TE Flap

TASK 27-51-16-424-012 404 TBC ALL



### OUTBOARD TRAILING EDGE FLAP TRANSMISSION - REMOVAL/ INSTALLATION 27-51-17 401 TBC ALL



### Remove the Transmissions for the Outboard TE Flap

TASK 27-51-17-024-001 401 TBC ALL



### Install the Transmissions for the Outboard TE Flap

TASK 27-51-17-424-020 416 TBC ALL



### OUTBOARD TRAILING EDGE FLAP TEE GEARBOX - REMOVAL/INSTALLATION 27-51-18 401 TBC ALL



### Remove the Tee Gearbox for the Outboard TE Flap

TASK 27-51-18-024-001 401 TBC ALL



### Install the Tee Gearbox for the Outboard TE Flap

TASK 27-51-18-424-019 408 TBC ALL



### OUTBOARD TRAILING EDGE FLAP BALLSCREW - REMOVAL/INSTALLATION 27-51-21 401 TBC ALL



### Remove the Ballscrew for the Outboard TE Flap

TASK 27-51-21-024-001 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 28 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Ballscrew for the Outboard TE Flap

TASK 27-51-21-424-004 409 TBC ALL



### OUTBOARD TRAILING EDGE FLAP BALLSCREW - INSPECTION/CHECK 27-51-21 601 TBC ALL



### Outboard Trailing Edge Flap Ballscrew Backlash Check

TASK 27-51-21-226-001 601 TBC ALL



### Outboard Trailing Edge Flap Ballscrew Nut Return Tube Check

TASK 27-51-21-226-018 607 TBC ALL



### Outboard Trailing Edge Flap Ballscrew Inspection

TASK 27-51-21-226-039 613 TBC ALL



### OUTBOARD TE FLAP AFT FLAP - REMOVAL/ INSTALLATION 27-51-22 401 TBC ALL



### Remove the Aft Flap From the Outboard TE Flap

TASK 27-51-22-024-026 401 TBC ALL



### Install the Aft Flap to the Outboard TE Flap

TASK 27-51-22-424-028 408 TBC ALL



### OUTBOARD TE FLAP AFT FLAP - ADJUSTMENT/TEST 27-51-22 501 TBC ALL



### Adjust the Aft Flap for the Outboard TE Flap

TASK 27-51-22-825-001 501 TBC ALL



### Test of the Aft Flap Installation

TASK 27-51-22-705-037 511 TBC ALL



### OUTBOARD TRAILING EDGE FLAP AFT FLAP LINKAGE - REMOVAL/ INSTALLATION 27-51-23 401 TBC ALL



### Remove the Aft Flap Linkage for the Outboard TE Flap

TASK 27-51-23-024-001 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 29 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Aft Flap Linkage for the Outboard TE Flap

TASK 27-51-23-424-018 406 TBC ALL



### OUTBOARD TRAILING EDGE FLAP AFT FLAP LINKAGES - INSPECTION/CHECK 27-51-23 601 TBC ALL



### Wear Limits for the Aft Flap Linkages, Outboard Flaps

TASK 27-51-23-226-001 601 TBC ALL



### LEFT HYDRAULIC SYSTEM PRESSURE SENSITIVE FLOW LIMITER - REMOVAL/ INSTALLATION 27-51-24 401 TBC ALL



### Remove the Pressure-Sensitive Flow Limiter for the Left Hydaulic System

TASK 27-51-24-024-001 401 TBC ALL



### Install the Pressure-Sensitive Flow Limiter for the Left Hydraulic System

TASK 27-51-24-424-006 404 TBC ALL



### Operational Test for the Flow Limiter for the Left Hydraulic System

TASK 27-51-24-714-028 404 TBC ALL



### TRAILING EDGE FLAP TORQUE TUBES - MAINTENANCE PRACTICES 27-51-25 201 TBC ALL



### Remove the Torque Tubes for the TE Flap

TASK 27-51-25-022-001 201 TBC ALL



### Install the Torque Tubes for the TE Flap

TASK 27-51-25-422-016 210 TBC ALL



### Approved Repairs for the Torque Tubes of the TE Flap System

TASK 27-51-25-302-025 214 TBC ALL



### Torque Tube Coupling Inspection at the Angle Gearboxes

TASK 27-51-25-202-182 215 TBC ALL PRE SB 757-27A0125 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 30 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Remove the Torque Tube Support Bearing for the TE Flaps

TASK 27-51-25-022-155 222 TBC ALL



### Install the Torque Tube Support Bearing

TASK 27-51-25-422-158 224 TBC ALL



### TRAILING EDGE FLAP POWER DRIVE UNIT - REMOVAL/INSTALLATION 27-51-26 401 TBC ALL



### Remove the PDU for the TE Flap

TASK 27-51-26-034-001 401 TBC ALL



### Install the PDU for the TE Flap

TASK 27-51-26-434-012 416 TBC ALL



### TRAILING EDGE FLAP POWER DRIVE UNIT COMPONENTS - MAINTENANCE PRACTICES 27-51-27 201 TBC ALL



### Remove the PDU Components

TASK 27-51-27-022-001 201 TBC ALL



### Install the PDU Components

TASK 27-51-27-422-012 208 TBC ALL



### TRAILING EDGE FLAP POWER DRIVE UNIT CONTROL VALVE MODULE AND COMPONENTS - MAINTENANCE PRACTICES 27-51-28 201 TBC ALL



### Control Valve Module Removal

TASK 27-51-28-022-001 201 TBC ALL



### Control Valve Module Installation

TASK 27-51-28-422-152 214 TBC ALL


### Flap Load Relief Solenoid Valve Removal

TASK 27-51-28-022-070 219 TBC ALL



### Flap Load Relief Solenoid Valve Installation

TASK 27-51-28-422-183 220 TBC ALL



### Flap Load Relief Solenoid Valve Coil Removal

TASK 27-51-28-022-090 222 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 31 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Flap Load Relief Solenoid Valve Coil Installation

TASK 27-51-28-422-091 224 TBC ALL



### Control Valve Module Component Test

TASK 27-51-28-722-218 225 TBC ALL



### FLAP/SLAT DEPRESSURIZATION MODULE AND COMPONENTS - MAINTENANCE PRACTICES 27-51-29 201 TBC ALL



### Remove the Flap/Slat Depressurization Module and Components

TASK 27-51-29-022-001 201 TBC ALL



### Install the Flap/Slat Depressurization Module and Components

TASK 27-51-29-422-026 211 TBC ALL



### Operational Test for the Flap/Slat Depressurization Module

TASK 27-51-29-712-067 215 TBC ALL



### Operational Test for the Flap/Slat Depressurization Module with Primary Control

TASK 27-51-29-712-172 227 TBC ALL



### Operational Test for the Priority Valve

TASK 27-51-29-712-173 229 TBC ALL


### [Scheduled Maintenance Task] Flap/ Slat Depressurization Module Priority Valve - Removal/Installation

TASK 27-51-29-000-801 235 TBC ALL



### INBOARD TRAILING EDGE FLAP TRACK FAIRING - MAINTENANCE PRACTICES 27-51-30 201 TBC ALL



### Remove the Fairings for the Inboard TE Flap Track

TASK 27-51-30-022-001 201 TBC ALL



### Install the Fairing for the Inboard TE Flap Tracks

TASK 27-51-30-422-039 210 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 32 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Adjustment/Test of the Fairing for the Inboard TE Flap Track

TASK 27-51-30-702-055 212 TBC ALL



### OUTBOARD TRAILING EDGE FLAP TRACK FAIRINGS - MAINTENANCE PRACTICES 27-51-31 201 TBC ALL



### Remove the Fairings for the Outboard TE Flap Tracks

TASK 27-51-31-022-001 201 TBC ALL



### Install the Fairings for the Outboard TE Flap Tracks

TASK 27-51-31-422-068 210 TBC ALL



### Adjustment/Test of the Forward and Aft Fairings

TASK 27-51-31-822-045 213 TBC ALL



### FLAP CONTROL LEVER - REMOVAL/ INSTALLATION 27-51-32 401 TBC ALL


### Remove the Flap Control Lever

TASK 27-51-32-024-001 401 TBC ALL


### Install the Flap Control Lever

TASK 27-51-32-424-015 412 TBC ALL



### FLAP CONTROL LEVER - INSPECTION/ CHECK 27-51-32 601 TBC ALL


### Wear Limits for the Flap Control Lever

TASK 27-51-32-206-001 601 TBC ALL



### FLAP CONTROL LEVER POSITION TRANSMITTER - REMOVAL/ INSTALLATION 27-51-33 401 TBC ALL



### Remove the Position Transmitter for the Flap Control Lever

TASK 27-51-33-024-001 401 TBC ALL



### Install the Position Transmitter for the Flap Control Lever

TASK 27-51-33-424-010 406 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 33 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect TRAILING EDGE FLAP DRIVESHAFT - REMOVAL/INSTALLATION 27-51-34 401 TBC ALL


### Remove the Drive Shaft for the TE Flap

TASK 27-51-34-024-001 401 TBC ALL



### Install the Drive Shaft for the TE Flap

TASK 27-51-34-424-018 407 TBC ALL



### TRAILING EDGE FLAP POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-58-00 1 TBC ALL



### TRAILING EDGE FLAP POSITION INDICATING SYSTEM - ADJUSTMENT/ TEST 27-58-00 501 TBC ALL



### Test of the Position Indicating System for the TE Flaps

TASK 27-58-00-705-001 501 TBC ALL



### TRAILING EDGE FLAP SYSTEM AND LEADING EDGE SLAT SYSTEM POSITION TRANSMITTER - ADJUSTMENT/TEST 27-58-01 501 TBC ALL



### Adjust the Position Transmitters for the TE Flaps and LE Slats

TASK 27-58-01-825-003 501 TBC ALL



### Adjust the Position Transmitter with Angle Position Indicator

TASK 27-58-01-825-066 524 TBC ALL WITHOUT FSEU 285N0011-40



### Test of the Position Transmitter Installation

TASK 27-58-01-715-112 534 TBC ALL



### FLAP POSITION INDICATOR (N15) REMOVAL/INSTALLATION 27-58-02 401 TBC ALL



### Flap Position Indicator - Removal

TASK 27-58-02-004-001 401 TBC ALL



### Flap Position Indicator - Installation

TASK 27-58-02-404-015 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 34 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Flap Position Indicator - Test

TASK 27-58-02-704-010 402 TBC ALL



### FLAP POSITION TRANSMITTER - REMOVAL/ INSTALLATION 27-58-03 401 TBC ALL



### Remove the Position Transmitter for the TE Flaps

TASK 27-58-03-024-001 401 TBC ALL



### Install the Flap Position Transmitter

TASK 27-58-03-424-015 406 TBC ALL



### SPOILERS AND DRAG DEVICES - DESCRIPTION AND OPERATION 27-60-00 1 TBC ALL



### SPOILER/SPEEDBRAKE CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-61-00 1 TBC ALL



### SPOILER/SPEEDBRAKE CONTROL SYSTEM - MAINTENANCE PRACTICES 27-61-00 201 TBC ALL


### Spoiler/Speedbrake Deactivation

TASK 27-61-00-042-008 201 TBC ALL



### Spoiler/Speedbrake Activation

TASK 27-61-00-442-036 210 TBC ALL



### SPOILER/SPEEDBRAKE CONTROL SYSTEM - ADJUSTMENT/TEST 27-61-00 501 TBC ALL



### Operational Test - Spoiler/Speedbrake Control System

TASK 27-61-00-715-409 501 TBC ALL



### Adjustment - Spoiler/Speedbrake Control System

TASK 27-61-00-825-085 518 TBC ALL



### System Test - Spoiler/Speedbrake Control System

TASK 27-61-00-735-204 548 TBC ALL



### SPOILERS - REMOVAL INSTALLATION 27-61-01 401 TBC ALL 

### Spoilers - Removal

TASK 27-61-01-024-011 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 35 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Spoiler - Installation

TASK 27-61-01-424-040 419 TBC ALL



### SPOILER POWER CONTROL ACTUATOR (PCA) - MAINTENANCE PRACTICES 27-61-02 201 TBC ALL


### Spoiler PCA and Its Components - Removal

TASK 27-61-02-022-001 201 TBC ALL



### Spoiler PCA and Its Components - Installation

TASK 27-61-02-422-027 208 TBC ALL



### SPOILER RVDT UNIT - REMOVAL/ INSTALLATION 27-61-04 401 TBC ALL


### Spoiler RVDT Unit - Removal

TASK 27-61-04-024-028 401 TBC ALL


### Spoiler RVDT Unit - Installation

TASK 27-61-04-424-011 404 TBC ALL



### AUTO-SPEEDBRAKE CONTROL SYSTEM - DESCRIPTION AND OPERATION 27-62-00 1 TBC ALL



### AUTO-SPEEDBRAKE CONTROL SYSTEM - ADJUSTMENT/TEST 27-62-00 501 TBC ALL


### Operational Test - Auto-Speedbrake System

TASK 27-62-00-715-012 501 TBC ALL



### Adjustment - Auto-Speedbrake System

TASK 27-62-00-825-031 505 TBC ALL


### Speedbrake Lever Force Test

TASK 27-62-00-715-262 521 TBC ALL


### System Test - Auto-Speedbrake System

TASK 27-62-00-735-118 522 TBC ALL



### SPEEDBRAKE LEVER - REMOVAL/ INSTALLATION 27-62-01 401 TBC ALL


### Speedbrake Lever - Removal

TASK 27-62-01-024-004 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 36 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Speedbrake Lever - Installation

TASK 27-62-01-424-011 405 TBC ALL



### SPEEDBRAKE MECHANISM - MAINTENANCE PRACTICES 27-62-02 201 TBC ALL


### Auto-Speedbrake Mechanism and its Components - Removal

TASK 27-62-02-022-008 201 TBC ALL



### Auto-Speedbrake Mechanism and its Components - Installation

TASK 27-62-02-422-033 212 TBC ALL



### Auto-Speedbrake Actuator Arming Switch (S371) - Removal

TASK 27-62-02-022-072 218 TBC ALL



### Arming Switch for the Auto-Speedbrake Actuator (S371) - Installation

TASK 27-62-02-422-084 219 TBC ALL



### FORWARD THRUST LEVER POSITION SWITCH - ADJUSTMENT/TEST 27-62-07 501 TBC ALL



### Position Switch for the Forward Thrust Levers - Operational Test

TASK 27-62-07-715-003 501 TBC ALL



### REVERSE THRUST LEVER POSITION SWITCH - MAINTENANCE PRACTICES 27-62-08 201 TBC ALL



### Position Switch for the Reverse Thrust Levers - Removal

TASK 27-62-08-022-001 201 TBC ALL



### Position Switch for the Reverse Thrust Levers - Installation

TASK 27-62-08-422-012 205 TBC ALL



### LEADING EDGE SLAT SYSTEM - DESCRIPTION AND OPERATION 27-81-00 1 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 37 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect LEADING EDGE SLAT SYSTEM - MAINTENANCE PRACTICES 27-81-00 201 TBC ALL



### Deactivation of the LE Slats

TASK 27-81-00-042-001 201 TBC ALL



### Operation of the LE Slat System

TASK 27-81-00-862-045 210 TBC ALL



### LEADING EDGE SLAT SYSTEM - ADJUSTMENT/TEST 27-81-00 501 TBC ALL



### Operational Test - LE Slat System

TASK 27-81-00-715-001 501 TBC ALL


### Adjustment - LE Slat System

TASK 27-81-00-825-296 523 TBC ALL


### System Test - LE Slat System

TASK 27-81-00-735-300 535 TBC ALL



### Test of the Auto Slat Extension and Retraction

TASK 27-81-00-715-290 557 TBC ALL



### Test of the LE Slat Loss Detection Switches

TASK 27-81-00-715-294 560 TBC ALL



### INBOARD LEADING EDGE SLAT - REMOVAL/INSTALLATION 27-81-01 401 TBC ALL



### Remove the Inboard LE Slat

TASK 27-81-01-024-001 401 TBC ALL



### Install the Inboard LE Slat

TASK 27-81-01-424-019 418 TBC ALL



### INBOARD LEADING EDGE SLAT - INSPECTION/CHECK 27-81-01 601 TBC ALL



### Wear Limits for the Inboard Leading Edge Slat

TASK 27-81-01-226-001 601 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 38 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect OUTBOARD LEADING EDGE SLAT - REMOVAL/INSTALLATION 27-81-02 401 TBC ALL



### Remove the Outboard LE Slat

TASK 27-81-02-024-001 401 TBC ALL



### Install the Outboard LE Slat

TASK 27-81-02-424-021 420 TBC ALL



### OUTBOARD LEADING EDGE SLAT - INSPECTION/CHECK 27-81-02 601 TBC ALL



### Wear Limits for the Outboard Leading Edge Slat

TASK 27-81-02-226-001 601 TBC ALL



### LEADING EDGE SLAT POWER DRIVE UNIT CONTROL VALVE MODULE AND COMPONENTS - MAINTENANCE PRACTICES 27-81-06 201 TBC ALL



### Remove the Control Valve Module and the Autoslat Solenoid Valve

TASK 27-81-06-022-001 201 TBC ALL



### Install the Control Valve Module and the Autoslat Solenoid Valve

TASK 27-81-06-422-024 211 TBC ALL



### LEADING EDGE SLAT POWER DRIVE UNIT - REMOVAL/INSTALLATION 27-81-07 401 TBC ALL



### Remove the PDU for the LE Slat

TASK 27-81-07-024-001 401 TBC ALL



### Install the LE Slat PDU

TASK 27-81-07-424-027 415 TBC ALL



### LEADING EDGE SLAT POWER DRIVE UNIT COMPONENTS - MAINTENANCE PRACTICES 27-81-08 201 TBC ALL



### Remove the Components for the LE Slat PDU

TASK 27-81-08-022-001 201 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 39 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Components for the LE Slat PDU

TASK 27-81-08-422-017 208 TBC ALL



### LEADING EDGE SLAT BYPASS VALVE - REMOVAL/INSTALLATION 27-81-09 401 TBC ALL



### Remove the Bypass Valve for the LE Slat

TASK 27-81-09-024-001 401 TBC ALL



### Install the Bypass Valve for the LE Slat

TASK 27-81-09-424-016 407 TBC ALL



### INBOARD LEADING EDGE SLAT MAIN TRACK - REMOVAL/INSTALLATION 27-81-10 401 TBC ALL



### Remove the Main Track for the Inboard LE Slat

TASK 27-81-10-024-001 401 TBC ALL



### Install the Main Track for the Inboard LE Slat

TASK 27-81-10-424-017 406 TBC ALL



### INBOARD LEADING EDGE SLAT MAIN TRACK - INSPECTION/CHECK 27-81-10 601 TBC ALL



### Wear Limits for the Main Track of the Inboard Leading Edge Slat

TASK 27-81-10-206-001 601 TBC ALL



### INBOARD LEADING EDGE SLAT AUXILIARY TRACK - REMOVAL/INSTALLATION 27-81-11 401 TBC ALL



### Remove the Auxiliary Track for the Inboard LE Slat

TASK 27-81-11-024-001 401 TBC ALL



### Install the Auxiliary Track for the Inboard LE Slat

TASK 27-81-11-424-005 404 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 40 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect INBOARD LEADING EDGE SLAT AUXILIARY TRACK - INSPECTION/CHECK 27-81-11 601 TBC ALL



### Wear Limits for the Inboard Auxiliary Track of the Inboard Leading Edge Slat

TASK 27-81-11-226-001 601 TBC ALL



### Wear Limits for the Outboard Auxiliary Track of the Inboard Leading Edge Slat

TASK 27-81-11-226-003 610 TBC ALL



### Wear Limits for the Inboard Track Yoke of the Inboard Leading Edge Slat

TASK 27-81-11-226-005 610 TBC ALL



### Wear Limits for the Outboard Track Yoke of the Inboard Leading Edge Slat

TASK 27-81-11-226-007 610 TBC ALL



### OUTBOARD LEADING EDGE SLAT MAIN TRACK - REMOVAL/INSTALLATION 27-81-12 401 TBC ALL



### Remove the Main Track for the Outboard LE Slat

TASK 27-81-12-024-001 401 TBC ALL



### Install the Main Track for the Outboard LE Slat

TASK 27-81-12-424-011 406 TBC ALL



### OUTBOARD LEADING EDGE SLAT MAIN TRACK - INSPECTION/CHECK 27-81-12 601 TBC ALL



### Wear Limits for the Main Track, Outboard Leading Edge Slat

TASK 27-81-12-226-001 601 TBC ALL



### OUTBOARD LEADING EDGE SLAT AUXILIARY TRACK - REMOVAL/ INSTALLATION 27-81-13 401 TBC ALL



### Remove the Auxiliary Track for the Outboard LE Slat

TASK 27-81-13-024-006 401 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 41 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect Install the Auxiliary Track for the Outboard LE Slat

TASK 27-81-13-424-008 403 TBC ALL



### OUTBOARD LEADING EDGE SLAT AUXILIARY TRACK INSPECTION/CHECK 27-81-13 601 TBC ALL



### Wear Limits for the Auxiliary Track of the Outboard Leading Edge Slat.

TASK 27-81-13-226-002 601 TBC ALL



### LEADING EDGE SLAT DRIVE ANGLE GEARBOX - REMOVAL/INSTALLATION 27-81-15 401 TBC ALL



### Remove the Angle Gearbox for the LE Slat

TASK 27-81-15-024-001 401 TBC ALL



### Install the Angle Gearbox

TASK 27-81-15-424-014 406 TBC ALL



### LEADING EDGE SLAT DRIVE ROTARY ACTUATOR - REMOVAL/INSTALLATION 27-81-18 401 TBC ALL



### Remove the Rotary Actuator for the LE Slats

TASK 27-81-18-024-001 401 TBC ALL



### Install the Rotary Actuator for the LE Slats

TASK 27-81-18-424-019 412 TBC ALL



### LEADING EDGE SLAT DRIVE ROTARY ACTUATOR - INSPECTION/CHECK 27-81-18 601 TBC ALL



### Inspection of the Rotary Actuator

TASK 27-81-18-706-001 601 TBC ALL



### LEADING EDGE SLAT DRIVE TORQUE TUBE - REMOVAL/INSTALLATION 27-81-20 401 TBC ALL



### Remove the Torque Tube for the LE Slat

TASK 27-81-20-024-001 401 TBC ALL



### Install the Torque Tube for the LE Slat

TASK 27-81-20-424-015 407 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 42 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect LEADING EDGE SLAT DRIVE TORQUE TUBE - APPROVED REPAIRS 27-81-20 801 TBC ALL



### Approved Repairs for the Torque Tube of the Leading Edge Slat

TASK 27-81-20-308-001 801 TBC ALL



### INBOARD LE SLAT LOSS SENSING COMPONENTS - REMOVAL/ INSTALLATION 27-81-41 401 TBC ALL



### Loss Sensing Switch and Cable Assembly Removal

TASK 27-81-41-024-001 401 TBC ALL POST SB 757-27-0117



### Loss Sensing Switch for the Inboard LE Slats Removal

TASK 27-81-41-024-096 410 TBC ALL PRE SB 757-27-0117



### Loss Sensing Switch for the Inboard LE Slats Installation

TASK 27-81-41-424-017 417 TBC ALL PRE SB 757-27-0117



### Loss Sensing Switch and Cable Assembly Installation

TASK 27-81-41-424-097 419 TBC ALL POST SB 757-27-0117



### INBOARD LEADING EDGE SLAT LOSS SENSING SWITCH - ADJUSTMENT/TEST 27-81-41 501 TBC ALL



### Adjust the Loss Sensing Switch for the Inboard LE Slat

TASK 27-81-41-825-001 501 TBC ALL



### OUTBOARD LE SLAT LOSS SENSING SWITCH AND CABLE - REMOVAL/ INSTALLATION 27-81-42 401 TBC ALL



### Remove the Loss Sensing Switch and/ or Cable for the Outboard LE Slats

TASK 27-81-42-024-001 401 TBC ALL



### Install the Loss Sensing Switch and/or Cable for the Outboard LE Slats

TASK 27-81-42-424-031 410 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 43 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

## Subject Chapter Section Subject Conf Page Effect OUTBOARD LEADING EDGE SLAT LOSS SENSING SWITCH - ADJUSTMENT/TEST 27-81-42 501 TBC ALL



### Adjust the Loss Sensing Switch for the Outboard LE Slat

TASK 27-81-42-825-032 501 TBC ALL



### LEADING EDGE SLAT POSITION INDICATING SYSTEM - DESCRIPTION AND OPERATION 27-88-00 1 TBC ALL



### LEADING EDGE SLAT POSITION INDICATING SYSTEM - ADJUSTMENT/ TEST 27-88-00 501 TBC ALL



### Adjustment/Test of the Position Indicating System for the LE Slat

TASK 27-88-00-825-004 501 TBC ALL



### LEADING EDGE SLAT POSITION TRANSMITTER - REMOVAL/ INSTALLATION 27-88-01 401 TBC ALL



### Remove the Position Transmitter for the LE Slat

TASK 27-88-01-024-001 401 TBC ALL



### Install Leading Edge Slat Position Transmitter

TASK 27-88-01-424-015 406 TBC ALL 

## 757 AIRCRAFT MAINTENANCE MANUAL



# 27-CONTENTS

Page 44 May 20/2011 D633N165
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details 

### CHAPTER 27 FLIGHT CONTROLS

### STABILIZER TRIM BALLSCREW ACTUATOR - REMOVAL/INSTALLATION 1. General A. This procedure contains steps to remove and install the stabilizer ballscrew actuator. TASK 27-41-10-024-001 2. Remove the Stabilizer Ballscrew Actuator A. References Reference Title 06-42-00 P/B 201 EMPENNAGE (MAJOR ZONE 300) ACCESS DOORS AND PANELS - MAINTENANCE PRACTICES 24-22-00 P/B 201 CONTROL (SUPPLY POWER) - MAINTENANCE PRACTICES 29-11-00 P/B 201 MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS - MAINTENANCE PRACTICES B. Tools/Equipment NOTE: When more than one tool part number is listed under the same "Reference" number, the tools shown are alternates to each other within the same airplane series. Tool part numbers that are replaced or non-procurable are preceded by "Opt:", which stands for Optional. Reference Description SPL-10142 Instl/Rem Equipment - Horiz. Stab. Jackscrew - 757 (Part #: B27011-79, Supplier: 81205, A/P Effectivity: 757-ALL) C. Location Zones
Zone Area 311 Area Aft of Blkhd to Sta 1787.45, Left 312 Area Aft of Blkhd to Sta 1787.45, Right D. Access Panels Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. E. Prepare for the Removal
SUBTASK 27-41-10-864-002 

### (1) Supply electrical power (PAGEBLOCK 24-22-00/201)

. SUBTASK 27-41-10-864-003 

### WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED. (2) Supply power to the right and center hydraulic systems (PAGEBLOCK 29-11-00/201)

. 

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Page 401 Feb 20/2010 D633N165 BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for detailsSUBTASK 27-41-10-864-004 

### (3) Move the stabilizer to 4 units of trim, as shown on the stabilizer position indicators that are on the control stand panel, P10. NOTE: The stabilizer ballscrew actuator can be removed at all positions (if the stabilizer cannot be moved to the recommended position). But, if the actuator is not in the recommended position, the telescopic supports can hit the actuator.
SUBTASK 27-41-10-864-005 

### (4) Remove the pressure from the right and center hydraulic systems and reservoirs (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-864-006 

### (5) Put the C and R STAB TRIM SHUTOFF valve switches on the P10 panel to the CUTOUT position.
SUBTASK 27-41-10-864-007 

### (6) Open these circuit breakers and install safety tags: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R

SUBTASK 27-41-10-014-008 

### WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ELEVATOR CONTROL ACCESS DOOR, 313AL. YOUR WEIGHT CAN RELEASE THE SPRING-LOADED LATCHES ON THE DOOR. IF YOU FALL THROUGH THE DOOR, INJURIES CAN OCCUR. (7) Open this access panel: Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. (PAGEBLOCK 06-42-00/201)

. SUBTASK 27-41-10-034-009 

### (8) Disconnect the eight hydraulic lines that connect to the actuator brakes and motors at the lower gimbal (there are four on each side of the actuator) (Figure 401)

. SUBTASK 27-41-10-034-010 

### (9) Disconnect the four hydraulic drain seal lines from the actuator brakes and motors.
SUBTASK 27-41-10-034-011 

### (10) Disconnect the hydraulic lines from the actuator unions and clamps and turn them away from the actuator.
SUBTASK 27-41-10-034-012 

### (11) Install plugs and caps on all of the disconnected hydraulic lines and ports. 

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Page 402 Feb 20/2010 D633N165 BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for detailsSUBTASK 27-41-10-494-013 

### (12) Do the steps that follow to install the removal equipment for the stabilizer ballscrew, horizontal stabilizer jackscrew equipment, SPL-10142, (Figure 402): (a) Do the steps that follow to lock the stabilizer: 1) Install the four bracket assemblies to the first two upper bulkheads aft of the access door, 311AL. NOTE: Refer to Figure 402 for the bracket position on the bulkheads in relation to the airplane centerline. 2) Use the four pins that are supplied to install the I-frame to the brackets. 3) Use the pin that is supplied to install the turnbuckle assembly to the I-frame. 4) Use the bolts and pins that are supplied to install the trunnion assembly to the stabilizer lugs. NOTE: The stabilizer lugs are on the top of the stabilizer wing box. 5) Install the lateral frame assembly to the front of the I-frame. 6) Turn the turnbuckle assembly until it can be attached to the trunnion with the pin that is supplied. 7) If you turn the turnbuckle assembly and it is too short to connect to the trunnion, do the steps that follow: a) Remove the mid-length pin. b) Extend the turnbuckle until it can be connected to the trunnion. c) Install the mid-length pin. d) Adjust the turnbuckle and attach it to the trunnion. e) Make sure that the turnbuckle is installed vertically at the centerline of the airplane. (b) Do the steps that follow to install the sling: 1) Remove the mid-length safety pin. 2) Install the spring-loaded telescoping beam assembly between the bulkheads on each side of the access door, 311AL. NOTE: Refer to Figure 402 for the beam position in relation to the airplane centerline. 3) Install the mid-length safety pin. 4) Install the inverted T-track and trolley between the lateral front frame of the I-beam and the rail hanger of the telescoping beam. Use the two pins that are supplied to install the T-track. NOTE: This will let you move the stabilizer ballscrew actuator forward and left outboard to a position above the access door. 5) Attach the fishpole hoist to the trolley. 6) Move the trolley to a position above the stabilizer ballscrew actuator. 7) Install the sling around the upper gimbal of the stabilizer ballscrew actuator. F. Remove the Stabilizer Ballscrew Actuator (Figure 402) 

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Page 403 Feb 20/2010 D633N165 BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for detailsSUBTASK 27-41-10-824-014 

### WARNING: ONLY APPROVED PERSONS MUST OPERATE THE LEVER CHAIN HOISTS. DO NOT USE FORCE TO MOVE THE CONTROL LEVER OR KNOB INTO THE NEUTRAL OR THE FREE CHAIN POSITION. THIS CAN CAUSE A CHAIN HOIST WITH A LIGHT LOAD TO RELEASE ITS LOAD. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR. (1) Adjust the hoist until it holds the weight of the stabilizer ballscrew actuator. NOTE: A hoist with too much tension will cause the gimbal pins to get caught.
SUBTASK 27-41-10-034-015 

### (2) Remove the two bolts that attach the anti-rotation cables to the actuator housing.
SUBTASK 27-41-10-034-016 

### (3) Do the steps that follow to disconnect the upper gimbal: (a) Loosen the bolts for the upper and lower gimbal pins. (b) Remove the four bolts that hold the left and right upper gimbal retainers. CAUTION: DO NOT USE METAL TOOLS TO REMOVE THE RETAINERS. DO NOT USE TOO MUCH FORCE TO REMOVE THE GIMBAL. DAMAGE TO THE UPPER GIMBAL AND THE RETAINER FLANGES CAN OCCUR. (c) Remove the left and right upper gimbal retainers (4 locations). 

### NOTE: Use hardwood wedges between the retainer flanges and the gimbal to start the removal of the retainers.
SUBTASK 27-41-10-034-017 

### (4) Do the steps that follow to disconnect the lower gimbal: (a) Remove the two bolts that hold the safety shaft. (b) Remove the four bolts that hold the left and right retainers to the lower gimbal. CAUTION: DO NOT USE METAL TOOLS TO REMOVE THE RETAINERS. DAMAGE TO THE UPPER GIMBAL AND THE RETAINER FLANGES CAN OCCUR. (c) Use a hardwood dowel to remove the retainers and the safety shaft from the lower gimbal.
SUBTASK 27-41-10-024-018 

### (5) Turn the actuator forward to make sure the upper gimbal will not touch the supports for the stabilizer ballscrew. Move the trolley if it is necessary.
SUBTASK 27-41-10-024-019 

### (6) Lift the stabilizer ballscrew actuator away from the lower gimbal attachment lugs.
SUBTASK 27-41-10-024-020 

### (7) Move the actuator to a position above the access door, 311AL, and lower it through the door. ------------------------- END OF TASK --------------------------- 

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### Stabilizer Trim Ballscrew Actuator Hydraulic Connections Figure 401 (Sheet 1 of 2)/27-41-10-990-801 

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### Stabilizer Trim Ballscrew Actuator Hydraulic Connections Figure 401 (Sheet 2 of 2)/27-41-10-990-801 

## 757 AIRCRAFT MAINTENANCE MANUAL

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### Stabilizer Trim Ballscrew Actuator Installation Figure 402 (Sheet 1 of 2)/27-41-10-990-804 

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### Stabilizer Trim Ballscrew Actuator Installation Figure 402 (Sheet 2 of 2)/27-41-10-990-804 

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### Measurement of Stabilizer Dimension B Figure 403/27-41-10-990-806 

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### TASK 27-41-10-424-021 3. Install the Stabilizer Ballscrew Actuator A. References Reference Title 06-42-00 P/B 201 EMPENNAGE (MAJOR ZONE 300) ACCESS DOORS AND PANELS - MAINTENANCE PRACTICES 12-21-05 P/B 301 HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - SERVICING (LUBRICATION) 24-22-00 P/B 201 CONTROL (SUPPLY POWER) - MAINTENANCE PRACTICES 27-41-00 P/B 501 HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - ADJUSTMENT/TEST 27-41-14 P/B 601 STABILIZER TRIM UPPER AND LOWER GIMBAL - INSPECTION/CHECK 29-11-00 P/B 201 MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS - MAINTENANCE PRACTICES B. Tools/Equipment NOTE: When more than one tool part number is listed under the same "Reference" number, the tools shown are alternates to each other within the same airplane series. Tool part numbers that are replaced or non-procurable are preceded by "Opt:", which stands for Optional. Reference Description SPL-10142 Instl/Rem Equipment - Horiz. Stab. Jackscrew - 757 (Part #: B27011-79, Supplier: 81205, A/P Effectivity: 757-ALL) C. Consumable Materials Reference Description Specification D00013 Grease - Aircraft And Instrument Grease MIL-PRF-23827 (NATO G-354) (Supersedes MIL-G-23827) D00153 Fluid - Hydraulic Fluid, Fire Resistant BMS3-11 Type IV D00633 Grease - Aircraft General Purpose BMS3-33 D. Location Zones Zone Area 311 Area Aft of Blkhd to Sta 1787.45, Left 312 Area Aft of Blkhd to Sta 1787.45, Right E. Access Panels Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. F. Prepare for the Installation (Figure 402)
SUBTASK 27-41-10-224-022 

### (1) Make sure that the stabilizer ballscrew actuator and the attachment locations are in the permitted wear limits (PAGEBLOCK 27-41-14/601)

. 

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Page 410 May 20/2011 D633N165 BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for detailsSUBTASK 27-41-10-224-023 

### (2) Turn the upper gimbal and ballnut until the Dimension B on the stabilizer ballscrew actuator is 19.07 ± 0.50 inches (484.4 +/- 12.7 mm) (Figure 403)

. SUBTASK 27-41-10-034-024 

### (3) Do the steps that follow to remove the upper gimbal retainers: (a) Remove the nuts and bolts from the left and right retainers. (b) Remove the left and right retainers.
SUBTASK 27-41-10-034-025 

### (4) Do the steps that follow to remove the safety shaft and retainers from the lower gimbal: (a) Remove the nuts and bolts from the safety shaft. (b) Remove the safety shaft. (c) Remove the nuts and bolts from the left and right retainers. (d) Remove the left and right retainers.
SUBTASK 27-41-10-494-026 

### (5) Attach the lift bracket to the stabilizer ballscrew.
SUBTASK 27-41-10-424-027 

### (6) Use the fishpole hoist to lift the stabilizer ballscrew actuator through the access door, 311AL.
SUBTASK 27-41-10-424-028 

### (7) Move the lower gimbal to its correct position on the stabilizer attachment lugs. G. Install the Stabilizer Ballscrew Actuator (Figure 402)
SUBTASK 27-41-10-424-029 

### (1) Do the steps that follow to attach the lower gimbal: (a) Lightly apply grease, D00633 (or alternate grease, D00013) to these surfaces: 1) Bearing surfaces of the lower gimbal attachment lugs 2) Outer and inner surfaces of the retainers 3) outer surface of safety shaft. (b) Align the lower gimbal with the attachment lugs and install the left and right retainers with the grease fittings down. (c) Install the bolts, washers, and nuts that hold the retainers to the lower gimbal. 

### NOTE: Install the bolts such that the washers and nuts are on the outer part of the lower gimbal. (d) Install the safety shaft and align the holes at each end of the shaft with the retainer holes. (e) Install the bolts, nuts, and washers that hold the safety shaft. 

### NOTE: Install the bolts such that the washers and nuts are on the lower side of the retainer.
SUBTASK 27-41-10-424-030 

### (2) Do the steps that follow to attach the upper gimbal: (a) Lightly apply grease, D00633 (or alternate grease, D00013) to the bearing surfaces of the ballscrew support and the outer surfaces of the retainers. 

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### (b) Adjust the turnbuckle assembly as necessary until the stabilizer ballscrew actuator will engage with the ballscrew support. (c) Turn the actuator aft to engage it with the ballscrew support. (d) Align the upper gimbal with the ballscrew support and install the left and right retainers. (e) Align the bolt holes on the retainers with the holes on the upper gimbal. (f) Install the bolts, washers, and nuts on the retainers and upper gimbal.
SUBTASK 27-41-10-434-031 

### (3) Connect the anti-rotation cables with a bolt, washer, and nut (2 locations).
SUBTASK 27-41-10-434-032 

### (4) Remove the plugs and caps from the hydraulic lines and ports.
SUBTASK 27-41-10-434-034 

### (5) Connect the hydraulic lines and the drain tubes to the stabilizer ballscrew actuator. Use clamps to hold the hydraulic lines and drain tubes to the supports on the actuator. NOTE: Before you connect these hydraulic lines, make sure that the drive motor housing is full of hydraulic hydraulic fluid, D00153

. SUBTASK 27-41-10-094-035 

### (6) Remove the removal equipment for the stabilizer ballscrew, horizontal stabilizer jackscrew equipment, SPL-10142.
SUBTASK 27-41-10-214-036 

### (7) Do a visual check to make sure that you installed the stabilizer ballscrew actuator correctly.
SUBTASK 27-41-10-644-037 

### (8) Lubricate the stabilizer ballscrew actuator (PAGEBLOCK 12-21-05/301)

. H. Stabilizer Ballscrew Actuator Test
SUBTASK 27-41-10-864-038 

### (1) Remove the safety tags and close these circuit breakers: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R

SUBTASK 27-41-10-864-039 

### (2) Put the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the control stand panel, P10, to the NORM position. 

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Page 412 May 20/2011 D633N165 BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for detailsSUBTASK 27-41-10-864-040 

### WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED. (3) Supply power to the right or center hydraulic systems (PAGEBLOCK 29-11-00/201)

. NOTE: The right hydraulic system only supplies power to the ballscrew actuator’s right side secondary brake and drive hydraulic motor. The center hydraulic system only supplies power to the ballscrew actuator’s left side secondary brake and drive hydraulic motor. If the right and center hydraulic systems are pressurized at the same time, you cannot find failures.
SUBTASK 27-41-10-864-041 

### (4) Push and hold the BRAKE BYPASS valve button on the applicable stabilizer trim control module. NOTE: The button is on the bottom of the unit. The force necessary to push the button should be less than 25 pounds (111 newtons). You should push the button smoothly. If the force necessary to push the button is more than 25 pounds (111 newtons), remove the hydraulic power, push the button more than once, then supply the hydraulic power.
SUBTASK 27-41-10-864-042 

### (5) Move the control wheel switches and hold for 10 seconds. (a) Make sure that the stabilizer does not move.
SUBTASK 27-41-10-864-044 

### (6) Release the control wheel switches and then release the BRAKE BYPASS valve button.
SUBTASK 27-41-10-864-045 

### (7) Use the control wheel switches to move the stabilizer through its full travel range. (a) Make sure the stabilizer moves smoothly and freely through its full travel. 

### NOTE: The stabilizer can move to two different full-travel positions, depending on the flap setting. To move the stabilizer to its furthest possible point of travel, you will need to set the flaps to the 15-unit position. (b) Make sure that the anti-rotation cables stay loose through the full stabilizer travel. (c) Make sure there are no leaks or damage in the hydraulic line connections.
SUBTASK 27-41-10-714-054 

### (8) Do the Alternate-Electric Operation and Travel Limits Test (PAGEBLOCK 27-41-00/501)

. I. Put the Airplane Back to Its Usual Condition
SUBTASK 27-41-10-414-047 

### (1) Close this access panel: Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. (PAGEBLOCK 06-42-00/201)

. 

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Page 413 May 20/2011 D633N165 BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for detailsSUBTASK 27-41-10-864-048 

### (2) Remove the power from the hydraulic systems (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-864-049 

### (3) Remove electrical power, if it is not necessary (PAGEBLOCK 24-22-00/201)

. ------------------------- END OF TASK --------------------------- 

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### STABILIZER TRIM BALLSCREW FREEPLAY 1. General A. This procedure contains steps to do the following inspections:

 Stabilizer Ballscrew to Ballnut Freeplay Inspection

 Stabilizer Ballscrew Assembly Detailed Visual Inspection. TASK 27-41-10-226-052 2. Check for Stabilizer Ballscrew to Ballnut Freeplay 

### NOTE: This is a scheduled maintenance task. A. References Reference Title 06-42-00 P/B 201 EMPENNAGE (MAJOR ZONE 300) ACCESS DOORS AND PANELS - MAINTENANCE PRACTICES 12-21-05 P/B 301 HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - SERVICING (LUBRICATION) 24-22-00 P/B 201 CONTROL (SUPPLY POWER) - MAINTENANCE PRACTICES 27-41-10 P/B 401 STABILIZER TRIM BALLSCREW ACTUATOR - REMOVAL/INSTALLATION 29-11-00 P/B 201 MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS - MAINTENANCE PRACTICES B. Tools/Equipment NOTE: When more than one tool part number is listed under the same "Reference" number, the tools shown are alternates to each other within the same airplane series. Tool part numbers that are replaced or non-procurable are preceded by "Opt:", which stands for Optional. Reference Description SPL-11765 Bracket Assemblies - Horiz. Stab. Jackscrew Inst/Rem (B27011-3, -4 and -77 included in B27011-79 Equip) (Part #: B27011-79, Supplier: 81205, A/P Effectivity: 757-ALL) SPL-11766 Frame Assembly - Horiz. Stab. Jackscrew Inst/Rem (B27011-62 included in B27011-79 Equip) (Part #: B27011-79, Supplier: 81205, A/P Effectivity: 757-ALL) SPL-11767 Trunnion Assembly - Horiz. Stab. Jackscrew Inst/Rem (B27011-71 included in B27011-79 Equip) (Part #: B27011-79, Supplier: 81205, A/P Effectivity: 757-ALL) SPL-11773 Load Assembly - Jackscrew Backlash, Horiz. Stabilizer (B27034-6 included in B27034-1 eqpt) (Part #: B27034-1, Supplier: 81205, A/P Effectivity: 757-ALL) STD-6975 Indicator - Dial 25-441P, Universal Indicator Back - 672.2, Magnetic Base Indicator Holder C. Location Zones
Zone Area 311 Area Aft of Blkhd to Sta 1787.45, Left 312 Area Aft of Blkhd to Sta 1787.45, Right 

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### D. Access Panels Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. E. Prepare for the Inspection/Check
SUBTASK 27-41-10-646-054 

### (1) Lubricate the stabilizer ballscrew (PAGEBLOCK 12-21-05/301)

. SUBTASK 27-41-10-866-053 

### (2) Supply electrical power (PAGEBLOCK 24-22-00/201)

. SUBTASK 27-41-10-866-003 

### WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED. (3) Supply power to the right and center hydraulic systems (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-866-004 

### (4) Move the stabilizer to approximately 4 units of trim, as shown on the stabilizer position indicators that are on the control stand panel, P10.
SUBTASK 27-41-10-866-005 

### (5) Remove the pressure from the right and center hydraulic system (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-866-006 

### (6) Put the C and R STAB TRIM SHUTOFF valve switches on the P10 panel to the CUTOUT position.
SUBTASK 27-41-10-866-007 

### (7) Open these circuit breakers and install safety tags: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R

SUBTASK 27-41-10-016-008 

### WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ELEVATOR CONTROL ACCESS DOOR, 313AL. YOUR WEIGHT CAN RELEASE THE SPRING-LOADED LATCHES ON THE DOOR. IF YOU FALL THROUGH THE DOOR, INJURIES CAN OCCUR. (8) Open this access panel: (PAGEBLOCK 06-42-00/201) Number Name/Location 

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### (Continued) Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys.

SUBTASK 27-41-10-496-013 

### (9) Do the steps that follow to install the load assembly, SPL-11773 (B27034-6) between the horizontal stabilizer and the upper fuselage structure (Figure 601): (a) Install the four bracket assemblies, SPL-11765 (B27011-3, -4, and -77) to the bulkheads above the horizontal stabilizer actuator (Figure 601)

. (b) Use the four pins to install the frame assembly, SPL-11766 (I-frame, B27011-62) to the four bracket assemblies that were just installed. (c) Use the bolts and pins supplied to install the trunnion assembly, SPL-11767 (B27011-71) to the stabilizer lug. (d) Install the load assembly, SPL-11773 (B27034-6) to the I-frame and trunnion using the pins.
SUBTASK 27-41-10-866-055 

### (10) Do the steps that follow to install the dial indicator, STD-6975 on the ballscrew actuator: (a) Install the magnetic base for the dial indicator on the ballscrew above the upper ballnut. (b) Install the dial indicator to the magnetic base so that the tip of the dial indicator touches the flat spot on the top of the ballnut. 

### NOTE: The dial indicator is installed to measure the downward movement of the ballnut relative to the ballscrew. F. Stabilizer Ballnut Freeplay Procedure (Figure 601)
SUBTASK 27-41-10-826-014 

### CAUTION: DO NOT APPLY MORE THAN THE SPECIFIED LOADS TO THE STABILIZER WHILE USING THE LOAD TOOL, B27034-6. DO NOT APPLY POWER TO THE STABILIZER TRIM ACTUATOR WITH THE LOAD TOOL INSTALLED. IF YOU DO, DAMAGE TO THE EQUIPMENT OR AIRCRAFT CAN OCCUR. (1) Zero the dial indicator, STD-6975. NOTE: At 4 units of trim, the aft stabilizer center of gravity loads the ballscrew in the upward direction, putting the ballscrew in tension.
SUBTASK 27-41-10-866-056 

### (2) Use the load assembly, SPL-11773 to slowly apply an upward force of 350 pounds to the ballscrew as read on the force guage. NOTE: To apply the upward force to the ballscrew, the stabilizer tool must be turned in the direction that shortens the tool length. This will apply an upward force on the ballnut and move the leading edge of the stabilizer up.
SUBTASK 27-41-10-826-061 

### (3) Zero the dial indicator, STD-6975. 

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Page 603 Feb 20/2010 D633N165 BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for detailsSUBTASK 27-41-10-826-057 

### (4) Use the load assembly, SPL-11773 to slowly release the upward force applied in the previous step and continue adjusting the load tool to apply a downward force of 1000 pounds (4450 newtons). NOTE: To apply a downward force on the stabilizer, the tool must be turned in a direction that lengthens the tool. This will apply a downward force on the ballnut. (a) Make a note of the quantity shown on the dial indicator. This is the stabilizer ballscrew to ballnut freeplay.
SUBTASK 27-41-10-846-059 

### (5) Use the load assembly, SPL-11773 to slowly release the downward force that was applied.
SUBTASK 27-41-10-826-062 

### (6) If the ballscrew to ballnut freeplay is less than 0.004 inch (0.10 mm), then the measurement may be in error. Do the following to verify that the measurement was not made in error: NOTE: If the measured freeplay is 0.000 inch (0.00 millimeter), then the freeplay measurement is probably in error. A small amount (0.004 to 0.007 inch (0.10 to 0.18 millimeter)) of freeplay is expected in new stabilizer ballscrews. (a) Check that the stabilizer was loaded in the correct direction for each of the previous steps. (b) Make sure the dial indicator, STD-6975 is functioning properly. (c) If the above two checks are complete and the freeplay check was run correctly, the stabilizer ballscrew to ballnut freeplay check is within the limits and no further checks are necessary. You can ignore the next two steps and put the airplane back to its usual condition.
SUBTASK 27-41-10-826-063 

### (7) If the ballscrew to ballnut freeplay is greater than or equal to 0.004 inch (0.10 mm), and less than 0.016 inch (0.41 mm), the ballscrew to ballnut freeplay is in the acceptable limits.
SUBTASK 27-41-10-826-064 

### (8) If the ballscrew to ballnut freeplay is greater than or equal to 0.016 inch (0.41 mm), the stab trim actuator wear is greater than the maximum in-service wear limits. Do the following: (a) Remove and Replace the Stabilizer Trim Actuator (PAGEBLOCK 27-41-10/401)

. G. Put the Airplane Back to Its Usual Condition
SUBTASK 27-41-10-486-065 

### (1) Remove the load assembly, SPL-11773 from the horizontal stabilizer and the upper fuselage (Figure 601)

. SUBTASK 27-41-10-486-066 

### (2) Remove the load tool installation bracket assemblies, SPL-11765 from the attach points on the bulkheads.
SUBTASK 27-41-10-486-067 

### (3) Remove the dial indicator, STD-6975 and the magnetic base from the ballnut and ballscrew.
SUBTASK 27-41-10-416-049 

### (4) Close this access panel: (PAGEBLOCK 06-42-00/201) Number Name/Location 

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### (Continued) Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys.

SUBTASK 27-41-10-866-050 

### (5) Set the C STAB TRIM SHUTOFF switch and R STAB TRIM SHUTOFF switch to the NORM position.
SUBTASK 27-41-10-866-051 

### (6) Remove the safety tags and close these circuit breakers: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R ------------------------- END OF TASK --------------------------- 

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### Stabilizer Ballnut Freeplay Inspection Figure 601/27-41-10-990-807 

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### TASK 27-41-10-226-069 3. Stabilizer Ballscrew Assembly Detailed Visual Inspection 

### NOTE: This is a scheduled maintenance task. A. References Reference Title 06-42-00 P/B 201 EMPENNAGE (MAJOR ZONE 300) ACCESS DOORS AND PANELS - MAINTENANCE PRACTICES 12-21-05 P/B 301 HORIZONTAL STABILIZER TRIM CONTROL SYSTEM - SERVICING (LUBRICATION) 24-22-00 P/B 201 CONTROL (SUPPLY POWER) - MAINTENANCE PRACTICES 27-41-10 P/B 401 STABILIZER TRIM BALLSCREW ACTUATOR - REMOVAL/INSTALLATION 29-11-00 P/B 201 MAIN (LEFT, RIGHT, AND CENTER) HYDRAULIC SYSTEMS - MAINTENANCE PRACTICES B. Location Zones Zone Area 311 Area Aft of Blkhd to Sta 1787.45, Left 312 Area Aft of Blkhd to Sta 1787.45, Right C. Access Panels Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. D. Prepare for the Detailed Visual Inspection
SUBTASK 27-41-10-866-071 

### (1) Supply electrical power (PAGEBLOCK 24-22-00/201)

. SUBTASK 27-41-10-866-072 

### WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED. (2) Supply power to the right and center hydraulic systems (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-866-073 

### (3) Move the stabilizer to approximately 4 units of trim, as shown on the stabilizer position indicators that are on the control stand panel, P10.
SUBTASK 27-41-10-866-074 

### (4) Remove the pressure from the right and center hydraulic system (PAGEBLOCK 29-11-00/201)

. SUBTASK 27-41-10-866-075 

### (5) Put the C and R STAB TRIM SHUTOFF valve switches on the P10 panel to the CUTOUT position. 

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Page 607 Feb 20/2010 D633N165 BOEING PROPRIETARY - Copyright# Unpublished Work - See title page for detailsSUBTASK 27-41-10-866-076 

### (6) Open these circuit breakers and install safety tags: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R

SUBTASK 27-41-10-016-077 

### WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL AND THE ELEVATOR CONTROL ACCESS DOOR, 313AL. YOUR WEIGHT CAN RELEASE THE SPRING-LOADED LATCHES ON THE DOOR. IF YOU FALL THROUGH THE DOOR, INJURIES CAN OCCUR. (7) Open this access panel: Number Name/Location 311AL Stab. Trim Ctrl, Actuator, Control Module, Position Transmitter, Flight Control Cable Instl, APU Fuel Feed Sys., APU Air Supply Sys., Pitot Static Sys. (PAGEBLOCK 06-42-00/201)

. E. Stabilizer Ballscrew Assembly Detailed Visual Inspection (Figure 602)
SUBTASK 27-41-10-216-099 

### (1) Inspect the ballscrew and ballnut for signs of corrosion. NOTE: Metallic debris in the grease may indicate degradation of the balls in the ballnut. (a) Look for metallic dust particles on or around the ballscrew and ballnut. (b) Examine the grease on the ballscrew for metal debris. (c) If you find any metal debris or corrosion, replace the stabilizer ballscrew actuator assembly (PAGEBLOCK 27-41-10/401)

. SUBTASK 27-41-10-646-070 

### (2) Clean the ballscrew by wiping any old grease and dirt from the ballscrew threads. NOTE: Use a clean, dry, non-abrasive cloth.
SUBTASK 27-41-10-216-101 

### (3) Inspect the ballnut and four ballnut return tubes for the following: NOTE: The ballnut return tubes are difficult to view from below. Make sure to view the return tubes from above the ballnut assembly. (a) Visually inspect the ballnut return tubes to see if they have lifted from the ballnut or are damaged in a way that would restrict free movement of the ball bearings. 1) If any of the return tubes have lifted from the ballnut, or are dented or damaged, replace the stabilizer ballscrew actuator assembly (PAGEBLOCK 27-41-10/401)

. 

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### (b) Check the exterior of the ballnut, stabilizer actuator, and the area below and around the actuator for ball bearings. 

### NOTE: The ball bearings used inside the ballnut are 0.2188 inch (5.558 millimeter) diameter. 1) If any ball bearings are found, replace the stabilizer ballscrew actuator assembly (PAGEBLOCK 27-41-10/401)

. SUBTASK 27-41-10-216-102 

### (4) Examine the ballscrew for the following problems: (a) Inspect the ballscrew threads for for cross-threading, distortion, or stripping. (b) Check for metal debris, pitting, gouging, corrosion, spalling or brinelling in the ballscrew thread. (c) Check for obvious differences in thread shape between thread grooves in the lower, middle and upper portions of the ballscrew. (d) Check the ballscrew for damage or cracking.
SUBTASK 27-41-10-866-095 

### (5) Move the ballscrew to another location other than the 4 units of trim that it was just at.
SUBTASK 27-41-10-216-104 

### (6) Repeat the steps above to examine the newly exposed threads of the ballscrew.
SUBTASK 27-41-10-216-105 

### (7) If you find any problems listed above, replace the stabilizer ballscrew actuator assembly (PAGEBLOCK 27-41-10/401)

. SUBTASK 27-41-10-646-096 

### (8) Unless you will immediately perform the check for the stabilizer ballscrew to ballnut freeplay (PAGEBLOCK 27-41-10/601), lubricate the stabilizer ballscrew and ballnut (PAGEBLOCK 12-21-05/301). F. Put the Airplane Back to Its Usual Condition
SUBTASK 27-41-10-866-092 

### (1) Set the C STAB TRIM SHUTOFF switch and R STAB TRIM SHUTOFF switch to the NORM position.
SUBTASK 27-41-10-866-093 

### (2) Remove the safety tags and close these circuit breakers: Overhead Circuit Breaker Panel, P11

Row Col Number Name

B 19 C01010 STAB TRIM-ALTERNATE CONTROL TBC ALL POST SB 757-27-0104 C 5 C01017 STAB TRIM CONT L TBC ALL C 12 C01528 STAB TRIM SHUTOFF L C 13 C01529 STAB TRIM SHUTOFF R H 11 C01017 STAB TRIM CONT L H 20 C01018 STAB TRIM CONT R ------------------------- END OF TASK --------------------------- 

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### Stabilizer Assembly Detailed Visual Inspection Figure 602/27-41-10-990-808 

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