631-32-215 

Inovel Parc Sud 

78140 Vélizy-Villacoublay 

Tél. +33 (0)1 46 29 18 00 

Fax +33 (0)1 46 29 18 01 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 1 of 22

ATR 42 MAIN LANDING GEAR PINS INSPECTION 

1. PLANNING INFORMATION 

A. Effectivity 

(1) In-service aircraft affected 

 ATR 42 all types 

(2) In-service and spare components affected 

MLG legs, side brace and shock absorber all modification suffixes listed hereafter. 

ATR 42 all types: pins D56800 or D56800-1, D57261, D56809 or D62079, 

ATR 42-300: Pins D57401, D57407, D56841 and D58807, 

ATR 42-500: Pins D62054, D62055, D63823 and D63825, 

Listed in the following tables. 

(3) Parts concerned by the present Special Inspection: pins listed in the following table 

a) That have been previously inspected by SPRO as per Service Bulletin 631-32-127 and 

631-32-128 in the frame of the DGAC Airworthiness Directive (AD) 96-131-064 (B). 

b) For operator which cannot determine which MRO has accomplished the inspection as 

per MESSIER-BUGATTI-DOWTY Service Bulletin 631-32-127 and 631-32-128 in the 

frame of the DGAC AD 96-131-064 (B). 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 2 of 22 

ATR 42-300 

PIN PIN PIN PIN PIN PIN 

D58807 D56841 D58807 D56841 D58807 D56841 

S/N S/N S/N S/N S/N S/N 

MN01 MN01 MN45 MN41 MN88 MN81 

MN02 MN02 MN46 MN42 MN89 MN82 

MN03 MN03 MN47 MN43 MN90 MN83 

MN04 MN04 MN49 MN44 MN91 MN84 

MN05 MN05 MN50 MN45 MN92 MN85 

MN06 MN06 MN51 MN46 MN93 MN86 

MN07 MN07 MN52 MN47 MN94 MN87 

MN08 MN08 MN54 MN48 MN95 MN88 

MN09 MN09 MN55 MN49 MN96 MN90 

MN10 MN10 MN56 MN50 MN97 MN91 

MN11 MN11 MN57 MN51 MN100 MN92 

MN12 MN12 MN58 MN52 MN101 MN93 

MN13 MN13 MN59 MN53 MN102 MN94 

MN14 MN14 MN60 MN54 MN103 MN95 

MN15 MN15 MN62 MN55 MN104 MN96 

MN16 MN16 MN63 MN56 MN105 MN97 

MN17 MN17 MN64 MN57 MN106 MN98 

MN18 MN18 MN65 MN58 MN107 MN99 

MN20 MN19 MN66 MN59 MN108 MN100 

MN21 MN20 MN67 MN60 MN109 MN101 

MN22 MN21 MN68 MN61 MN110 MN102 

MN23 MN22 MN69 MN62 MN112 MN103 

MN24 MN23 MN70 MN63 MN113 MN104 

MN25 MN24 MN71 MN64 MN114 MN105 

MN26 MN25 MN72 MN65 MN115 MN106 

MN27 MN26 MN73 MN66 MN117 MN107 

MN28 MN27 MN74 MN67 MN119 MN108 

MN29 MN28 MN75 MN68 MN120 MN109 

MN30 MN29 MN76 MN69 MN123 MN110 

MN31 MN30 MN77 MN70 MN124 MN111 

MN33 MN31 MN78 MN71 MN125 MN112 

MN34 MN32 MN79 MN72 MN127 MN113 

MN35 MN33 MN80 MN73 MN129 MN114 

MN36 MN34 MN81 MN74 MN130 MN115 

MN37 MN35 MN82 MN75 MN132 MN116 

MN38 MN36 MN83 MN76 MN133 MN117 

MN39 MN37 MN84 MN77 MN134 MN118 

MN41 MN38 MN85 MN78 MN136 MN119 

MN43 MN39 MN86 MN79 MN137 MN120 

MN44 MN40 MN87 MN80 MN138 MN121 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 3 of 22

PIN PIN PIN PIN PIN PIN 

D58807 D56841 D58807 D56841 D58807 D56841 

S/N S/N S/N S/N S/N S/N 

MN139 MN122 MN183 MN162 MN225 MN214 

MN140 MN123 MN184 MN163 MN226 MN215 

MN141 MN124 MN185 MN164 MN227 MN216 

MN142 MN125 MN187 MN165 MN228 MN217 

MN144 MN126 MN188 MN166 MN229 MN220 

MN145 MN127 MN189 MN167 MN231 MN221 

MN146 MN128 MN190 MN168 MN232 MN222 

MN147 MN129 MN191 MN169 MN233 MN223 

MN148 MN130 MN192 MN170 MN234 MN224 

MN150 MN131 MN193 MN171 MN235 MN225 

MN151 MN132 MN194 MN172 MN238 MN226 

MN152 MN133 MN195 MN176 MN239 MN227 

MN153 MN134 MN196 MN178 MN240 MN230 

MN154 MN135 MN197 MN179 MN241 MN231 

MN155 MN136 MN198 MN181 MN242 MN233 

MN156 MN137 MN199 MN185 MN243 MN234 

MN157 MN138 MN200 MN187 MN244 MN235 

MN158 MN139 MN201 MN189 MN245 MN238 

MN159 MN140 MN202 MN190 MN246 MN239 

MN161 MN141 MN203 MN191 MN247 MN243 

MN162 MN142 MN204 MN192 MN248 MN245 

MN164 MN143 MN205 MN193 MN249 MN246 

MN165 MN144 MN206 MN194 MN250 MN247 

MN166 MN145 MN207 MN195 MN251 MN248 

MN167 MN146 MN208 MN197 MN252 MN249 

MN168 MN147 MN209 MN198 MN253 MN250 

MN169 MN148 MN210 MN199 MN254 MN251 

MN170 MN149 MN211 MN200 MN255 MN252 

MN171 MN150 MN212 MN201 MN256 MN253 

MN172 MN151 MN213 MN202 MN257 MN254 

MN173 MN152 MN214 MN203 MN258 MN255 

MN174 MN153 MN215 MN204 MN259 MN256 

MN175 MN154 MN216 MN205 MN260 MN257 

MN176 MN155 MN217 MN206 MN261 MN258 

MN177 MN156 MN218 MN208 MN262 MN259 

MN178 MN157 MN219 MN209 MN265 MN260 

MN179 MN158 MN220 MN210 MN266 MN261 

MN180 MN159 MN221 MN211 MN267 MN262 

MN181 MN160 MN222 MN212 MN268 MN263 

MN182 MN161 MN223 MN213 MN269 MN264 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 4 of 22

PIN PIN PIN PIN PIN PIN 

D58807 D56841 D58807 D56841 D58807 D56841 

S/N S/N S/N S/N S/N S/N 

MN270 MN265 MN313 MN310 MN362 MN372 

MN271 MN266 MN314 MN311 MN365 MN373 

MN272 MN267 MN315 MN312 MN366 MN374 

MN273 MN268 MN316 MN315 MN367 MN375 

MN274 MN273 MN317 MN320 MN369 MN376 

MN275 MN274 MN318 MN322 MN370 MN377 

MN276 MN275 MN319 MN324 MN371 MN378 

MN277 MN276 MN320 MN326 MN372 MN380 

MN278 MN277 MN322 MN327 MN374 MN381 

MN279 MN278 MN323 MN331 MN375 MN382 

MN280 MN279 MN324 MN335 MN376 MN383 

MN281 MN280 MN325 MN337 MN377 MN384 

MN282 MN281 MN326 MN339 MN378 MN385 

MN283 MN282 MN327 MN340 MN379 MN386 

MN284 MN283 MN328 MN341 MN380 MN388 

MN285 MN284 MN330 MN346 MN381 MN390 

MN287 MN285 MN331 MN347 MN382 MN391 

MN288 MN286 MN332 MN349 MN383 MN396 

MN289 MN287 MN333 MN350 MN384 MN399 

MN290 MN288 MN334 MN351 MN386 MN402 

MN291 MN289 MN335 MN352 MN387 MN404 

MN293 MN290 MN336 MN353 MN388 MN410 

MN294 MN291 MN337 MN354 MN390 MN415 

MN295 MN292 MN339 MN355 MN391 

MN296 MN293 MN340 MN356 MN394 

MN297 MN294 MN342 MN357 MN396 

MN298 MN295 MN343 MN358 MN398 

MN299 MN296 MN345 MN359 MN403 

MN300 MN297 MN347 MN360 MN406 

MN301 MN298 MN348 MN361 MN407 

MN302 MN299 MN350 MN362 MN408 

MN303 MN300 MN351 MN363 MN409 

MN305 MN301 MN352 MN364 MN415 

MN306 MN302 MN353 MN365 MN467 

MN307 MN303 MN354 MN366 MN473 

MN308 MN304 MN355 MN367 

 MN309 MN305 MN356 MN368 

MN310 MN306 MN357 MN369 

MN311 MN308 MN358 MN370 

MN312 MN309 MN361 MN371 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 5 of 22

PIN PIN PIN PIN PIN PIN 

D57401 D57407 D57401 D57407 D57401 D57407 

S/N S/N S/N S/N S/N S/N 

MN01 MN10 MN70 MN69 MN111 MN109 

MN05 MN14 MN71 MN70 MN112 MN110 

MN21 MN21 MN72 MN71 MN113 MN111 

MN22 MN25 MN73 MN72 MN114 MN112 

MN27 MN29 MN74 MN73 MN115 MN113 

MN30 MN30 MN75 MN74 MN116 MN114 

MN34 MN34 MN77 MN75 MN117 MN115 

MN35 MN35 MN78 MN76 MN118 MN116 

MN36 MN37 MN79 MN77 MN119 MN117 

MN37 MN38 MN80 MN78 MN120 MN118 

MN38 MN39 MN81 MN79 MN121 MN119 

MN39 MN40 MN82 MN80 MN122 MN120 

MN40 MN41 MN83 MN81 MN123 MN121 

MN42 MN42 MN84 MN82 MN124 MN122 

MN43 MN43 MN85 MN83 MN125 MN123 

MN44 MN44 MN86 MN84 MN127 MN124 

MN45 MN45 MN87 MN85 MN128 MN125 

MN46 MN46 MN88 MN86 MN129 MN126 

MN47 MN47 MN89 MN87 MN130 MN127 

MN49 MN48 MN90 MN88 MN131 MN128 

MN50 MN49 MN91 MN89 MN132 MN129 

MN51 MN50 MN92 MN90 MN133 MN130 

MN52 MN51 MN93 MN91 MN134 MN131 

MN53 MN52 MN94 MN92 MN135 MN132 

MN54 MN53 MN95 MN93 MN136 MN133 

MN55 MN54 MN96 MN94 MN137 MN134 

MN56 MN55 MN97 MN95 MN139 MN135 

MN57 MN56 MN98 MN96 MN140 MN136 

MN58 MN57 MN99 MN97 MN141 MN137 

MN59 MN58 MN100 MN98 MN142 MN138 

MN60 MN59 MN101 MN99 MN143 MN140 

MN61 MN60 MN102 MN100 MN144 MN141 

MN62 MN61 MN103 MN101 MN146 MN142 

MN63 MN62 MN104 MN102 MN147 MN143 

MN64 MN63 MN105 MN103 MN148 MN144 

MN65 MN64 MN106 MN104 MN149 MN145 

MN66 MN65 MN107 MN105 MN151 MN146 

MN67 MN66 MN108 MN106 MN152 MN147 

MN68 MN67 MN109 MN107 MN153 MN148 

MN69 MN68 MN110 MN108 MN154 MN149 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 6 of 22

PIN PIN PIN PIN PIN PIN 

D57401 D57407 D57401 D57407 D57401 D57407 

S/N S/N S/N S/N S/N S/N 

MN155 MN150 MN200 MN195 MN242 MN236 

MN156 MN153 MN201 MN196 MN243 MN237 

MN157 MN154 MN202 MN198 MN244 MN238 

MN158 MN156 MN203 MN199 MN245 MN239 

MN159 MN157 MN204 MN200 MN246 MN240 

MN160 MN158 MN205 MN201 MN247 MN241 

MN161 MN159 MN206 MN202 MN248 MN242 

MN162 MN160 MN207 MN203 MN249 MN243 

MN163 MN161 MN208 MN204 MN250 MN244 

MN164 MN162 MN209 MN205 MN251 MN245 

MN167 MN163 MN210 MN206 MN252 MN246 

MN168 MN164 MN211 MN207 MN253 MN247 

MN169 MN165 MN212 MN208 MN254 MN248 

MN170 MN166 MN213 MN209 MN255 MN249 

MN171 MN167 MN214 MN210 MN256 MN250 

MN172 MN168 MN215 MN211 MN257 MN251 

MN174 MN169 MN216 MN212 MN258 MN252 

MN175 MN170 MN217 MN213 MN259 MN253 

MN176 MN171 MN218 MN214 MN260 MN254 

MN177 MN172 MN219 MN215 MN261 MN255 

MN179 MN173 MN220 MN216 MN262 MN256 

MN180 MN174 MN222 MN217 MN263 MN257 

MN181 MN175 MN224 MN218 MN265 MN258 

MN182 MN177 MN225 MN219 MN266 MN259 

MN183 MN179 MN226 MN220 MN267 MN260 

MN184 MN180 MN227 MN221 MN268 MN261 

MN185 MN181 MN228 MN222 MN269 MN262 

MN186 MN182 MN229 MN223 MN270 MN263 

MN187 MN183 MN230 MN224 MN271 MN264 

MN188 MN184 MN231 MN225 MN272 MN265 

MN189 MN185 MN232 MN226 MN273 MN266 

MN190 MN186 MN233 MN227 MN274 MN267 

MN191 MN187 MN234 MN228 MN275 MN268 

MN192 MN188 MN235 MN229 MN276 MN269 

MN193 MN189 MN236 MN230 MN277 MN270 

MN194 MN190 MN237 MN231 MN278 MN271 

MN195 MN191 MN238 MN232 MN279 MN273 

MN196 MN192 MN239 MN233 MN280 MN274 

MN198 MN193 MN240 MN234 MN282 MN275 

MN199 MN194 MN241 MN235 MN284 MN276 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 7 of 22

PIN PIN PIN PIN PIN PIN 

D57401 D57407 D57401 D57407 D57401 D57407 

S/N S/N S/N S/N S/N S/N 

MN285 MN277 MN325 MN320 MN365 MN361 

MN286 MN278 MN326 MN321 MN366 MN362 

MN287 MN279 MN327 MN322 MN367 MN363 

MN288 MN280 MN328 MN323 MN369 MN364 

MN289 MN281 MN329 MN324 MN370 MN366 

MN290 MN282 MN330 MN325 MN371 MN367 

MN291 MN283 MN331 MN326 MN372 MN368 

MN292 MN284 MN332 MN327 MN373 MN369 

MN293 MN285 MN333 MN328 MN374 MN370 

MN294 MN286 MN334 MN329 MN375 MN371 

MN295 MN287 MN335 MN330 MN376 MN372 

MN296 MN288 MN336 MN331 MN377 MN373 

MN297 MN289 MN337 MN332 MN378 MN374 

MN298 MN290 MN338 MN334 MN379 MN375 

MN299 MN291 MN339 MN335 MN380 MN376 

MN300 MN292 MN340 MN336 MN381 MN377 

MN301 MN293 MN341 MN337 MN382 MN378 

MN302 MN294 MN342 MN338 MN383 MN379 

MN303 MN295 MN343 MN339 MN384 MN380 

MN304 MN297 MN344 MN340 MN385 MN381 

MN305 MN298 MN345 MN341 MN386 MN382 

MN306 MN299 MN346 MN342 MN387 MN383 

MN307 MN300 MN347 MN343 MN388 MN384 

MN308 MN301 MN348 MN344 MN389 MN385 

MN309 MN302 MN349 MN345 MN390 MN386 

MN310 MN303 MN350 MN346 MN391 MN387 

MN311 MN304 MN351 MN347 MN393 MN388 

MN312 MN305 MN352 MN348 MN394 MN389 

MN313 MN306 MN353 MN349 MN395 MN390 

MN314 MN307 MN354 MN350 MN396 MN391 

MN315 MN308 MN355 MN351 MN397 MN392 

MN316 MN309 MN356 MN352 MN398 MN393 

MN317 MN310 MN357 MN353 MN399 MN394 

MN318 MN312 MN358 MN354 MN400 MN395 

MN319 MN313 MN359 MN355 MN401 MN396 

MN320 MN314 MN360 MN356 MN402 MN397 

MN321 MN315 MN361 MN357 MN403 MN398 

MN322 MN316 MN362 MN358 MN404 MN399 

MN323 MN317 MN363 MN359 MN405 MN400 

MN324 MN318 MN364 MN360 MN406 MN401 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 8 of 22

PIN PIN PIN PIN PIN PIN 

D57401 D57407 D57401 D57407 D57401 D57407 

S/N S/N S/N S/N S/N S/N 

MN407 MN402 MN448 MN452 MN491 MN514 

MN408 MN403 MN449 MN470 MN492 MN515 

MN409 MN404 MN450 MN471 MN493 MN516 

MN410 MN405 MN451 MN472 MN494 MN517 

MN411 MN406 MN452 MN473 MN495 MN518 

MN412 MN407 MN453 MN474 MN497 MN519 

MN413 MN408 MN454 MN475 MN498 MN520 

MN414 MN409 MN455 MN477 MN499 MN521 

MN415 MN410 MN456 MN478 MN500 MN522 

MN416 MN411 MN457 MN479 MN501 MN523 

MN417 MN412 MN458 MN480 MN502 MN524 

MN418 MN413 MN459 MN481 MN503 MN525 

MN419 MN414 MN460 MN482 MN504 MN526 

MN420 MN415 MN461 MN483 MN505 MN527 

MN421 MN416 MN462 MN484 MN506 MN528 

MN422 MN417 MN463 MN485 MN507 MN529 

MN423 MN418 MN464 MN486 MN508 MN530 

MN424 MN419 MN466 MN487 MN509 MN531 

MN425 MN420 MN468 MN488 MN510 MN532 

MN426 MN421 MN469 MN491 MN511 MN533 

MN427 MN422 MN471 MN492 MN512 MN534 

MN429 MN423 MN472 MN493 MN513 MN535 

MN430 MN424 MN473 MN494 MN514 MN536 

MN431 MN425 MN474 MN495 MN515 MN537 

MN432 MN426 MN475 MN496 MN516 MN538 

MN433 MN427 MN476 MN498 MN517 MN539 

MN434 MN428 MN477 MN499 MN520 MN540 

MN435 MN429 MN478 MN500 MN521 MN541 

MN436 MN430 MN479 MN501 MN522 MN542 

MN437 MN431 MN480 MN502 MN523 MN543 

MN438 MN432 MN481 MN503 MN524 MN544 

MN439 MN433 MN482 MN504 MN525 MN545 

MN440 MN434 MN483 MN505 MN526 MN546 

MN441 MN435 MN484 MN506 MN527 MN547 

MN442 MN436 MN485 MN507 MN528 MN548 

MN443 MN437 MN486 MN508 MN529 MN549 

MN444 MN438 MN487 MN509 MN530 MN550 

MN445 MN439 MN488 MN510 MN531 MN551 

MN446 MN449 MN489 MN511 MN532 MN552 

MN447 MN451 MN490 MN513 MN533 MN553 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 9 of 22

PIN PIN PIN PIN PIN PIN 

D57401 D57407 D57401 D57407 D57401 D57407 

S/N S/N S/N S/N S/N S/N 

MN534 MN554 MN571 MN590 MN604 MN635 

MN535 MN555 MN572 MN592 MN605 MN636 

MN536 MN556 MN573 MN593 MN606 MN637 

MN537 MN557 MN574 MN595 MN607 MN638 

MN538 MN558 MN575 MN597 MN608 MN639 

MN539 MN559 MN576 MN598 MN609 MN640 

MN540 MN560 MN577 MN600 MN610 MN641 

MN541 MN561 MN578 MN601 MN611 MN643 

MN542 MN562 MN579 MN603 MN612 MN644 

MN543 MN563 MN580 MN605 MN613 MN645 

MN544 MN564 MN581 MN607 MN614 MN646 

MN546 MN565 MN582 MN608 MN615 MN647 

MN547 MN566 MN583 MN609 MN616 MN648 

MN548 MN567 MN584 MN610 MN617 MN649 

MN550 MN568 MN585 MN611 MN618 MN650 

MN551 MN570 MN586 MN612 MN619 MN652 

MN552 MN571 MN587 MN613 MN620 MN653 

MN553 MN572 MN588 MN615 MN621 MN654 

MN554 MN573 MN589 MN616 MN624 MN657 

MN555 MN574 MN590 MN617 MN631 MN659 

MN556 MN575 MN591 MN618 MN632 MN660 

MN557 MN576 MN592 MN621 MN635 MN661 

MN558 MN577 MN593 MN622 MN639 MN662 

MN559 MN579 MN594 MN624 MN641 MN664 

MN560 MN580 MN595 MN625 MN642 MN678 

MN561 MN581 MN596 MN627 MN645 MN691 

MN562 MN582 MN597 MN628 MN806 

MN563 MN583 MN598 MN629 

MN564 MN584 MN599 MN630 

MN565 MN585 MN600 MN631 

MN566 MN586 MN601 MN632 

MN567 MN587 MN602 MN633 

MN570 MN588 MN603 MN634 

NOTE: Pins D58807, D56841, D57401 and D57407 to be inspected are: those previously inspected 

by SPRO (in the frame of SB 631-32-127 or SB 631-32-128) or when the MRO is unknown. 

Pins already inspected in the frame of SB 631-32-215 do not need to be re-inspected. 

 

Serial Numbers may not have the prefix MN.
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 10 of 22

ATR42-500 

PIN PIN PIN PIN 

D63823 D62054 D62055 D63825 

S/N S/N S/N S/N 

MN01 MN01 MN01 MN01 

MN02 MN02 MN02 MN02 

MN03 MN03 MN03 MN03 

MN04 MN04 MN04 MN04 

MN05 MN05 MN05 MN05 

MN12 MN12 MN06 MN06 

MN13 MN16 MN07 MN07 

MN15 MN17 MN08 MN08 

NOTE: Pins D63823, D62054, D62055 and D63825 to be inspected are: those previously inspected 

by SPRO (in the frame of SB 631-32-127 or SB 631-32-128) or when the MRO is unknown. 

Pins already inspected in the frame of SB 631-32-215 do not need to be re-inspected. 

 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 11 of 22

PIN PIN PIN PIN PIN PIN 

D56800 D57261 D56809 D56800 D57261 D56809 

S/N S/N S/N S/N S/N S/N 

01 01 1 41 41 49 

02 02 2 42 42 50 

03 05 4 43 43 51 

04 06 5 44 46 52 

05 07 6 45 47 53 

06 08 8 46 48 54 

07 09 9 47 50 55 

08 11 10 48 52 56 

09 12 11 49 53 57 

10 13 14 50 54 58 

11 13 15 51 55 59 

12 14 17 52 56 60 

13 15 18 53 57 61 

14 16 19 54 58 62 

15 17 20 55 59 63 

16 18 21 56 60 64 

17 19 23 57 61 65 

18 20 24 58 62 66 

19 21 25 59 63 67 

20 22 27 61 64 68 

21 24 28 62 65 71 

22 25 30 63 66 72 

23 25 31 64 67 73 

24 25 32 65 68 74 

25 26 33 66 69 75 

26 27 34 67 70 76 

26 28 35 68 71 77 

27 29 36 69 72 78 

29 30 37 70 73 80 

30 31 38 71 75 81 

31 32 39 72 76 83 

32 33 40 73 77 85 

33 34 41 74 78 86 

34 35 42 75 79 87 

35 36 43 76 80 88 

36 36 44 77 81 89 

37 37 45 78 82 90 

38 38 46 79 83 91 

39 39 47 80 84 92 

40 40 48 81 85 93 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 12 of 22

PIN PIN PIN PIN PIN PIN 

D56800 D57261 D56809 D56800 D57261 D56809 

S/N S/N S/N S/N S/N S/N 

82 87 95 MN122 131 139 

83 88 96 MN123 132 140 

84 89 97 MN124 133 141 

85 90 98 MN125 134 142 

86 91 99 MN126 135 143 

87 92 101 MN127 138 144 

88 94 104 MN128 139 145 

89 95 105 MN129 140 146 

90 96 106 MN130 143 146 

91 98 108 MN131 144 147 

92 99 109 MN132 146 148 

93 100 110 MN133 147 149 

94 101 111 MN134 148 149 

95 104 112 MN135 151 150 

96 105 113 MN136 152 151 

97 107 114 MN137 153 152 

98 107 115 MN138 155 153 

99 108 116 MN139 156 154 

100 109 117 MN140 157 155 

101 110 118 MN141 158 156 

102 111 119 MN142 159 157 

103 112 120 MN143 160 158 

MN104 113 121 MN144 161 159 

MN105 114 122 MN145 163 160 

MN106 115 123 MN146 164 161 

MN107 116 124 MN147 165 161 

MN108 117 125 MN148 166 162 

MN109 118 126 MN149 167 163 

MN110 119 127 MN150 168 209 

MN111 120 128 MN151 169 210 

MN112 121 129 MN152 170 211 

MN113 122 130 MN153 171 212 

MN114 123 131 MN154 172 213 

MN115 124 132 MN155 173 214 

MN116 125 133 MN156 174 215 

MN117 126 134 MN157 175 216 

MN118 127 135 MN158 176 217 

MN119 128 136 MN159 177 218 

MN120 129 137 MN160 178 219 

MN121 130 138 MN161 179 220 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 13 of 22

PIN PIN PIN PIN PIN PIN 

D56800 D57261 D56809 D56800 D57261 D56809 

S/N S/N S/N S/N S/N S/N 

MN162 180 221 MN205 223 269 

MN163 181 222 MN206 224 270 

MN164 182 223 MN207 225 271 

MN166 183 224 MN208 226 272 

MN167 184 225 MN209 227 273 

MN168 185 226 MN210 228 274 

MN169 186 227 MN211 229 275 

MN170 187 228 MN212 230 276 

MN171 189 229 MN213 231 277 

MN172 190 230 MN214 232 278 

MN173 191 231 MN215 233 279 

MN174 192 232 MN216 234 280 

MN175 193 233 MN217 235 281 

MN176 194 234 MN218 236 283 

MN177 195 235 MN219 237 284 

MN178 196 236 MN220 238 285 

MN179 196 239 MN221 239 286 

MN180 197 240 MN222 240 287 

MN181 198 242 MN223 241 289 

MN182 199 243 MN224 242 290 

MN183 200 244 MN225 242 291 

MN185 201 245 MN226 243 292 

MN186 202 246 MN227 244 293 

MN187 204 247 MN228 245 294 

MN188 205 248 MN229 246 295 

MN189 206 249 MN230 247 296 

MN190 207 250 MN232 248 297 

MN191 208 251 MN233 249 299 

MN192 209 254 MN234 250 300 

MN193 210 255 MN235 251 301 

MN194 211 256 MN236 252 302 

MN195 212 258 MN237 253 303 

MN197 213 259 MN238 254 304 

MN198 215 260 MN239 255 305 

MN199 216 261 MN240 256 306 

MN200 217 262 MN241 257 307 

MN201 219 263 MN242 259 308 

MN202 220 265 MN243 260 309 

MN203 221 267 MN244 262 310 

MN204 222 268 MN245 263 311 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 14 of 22

PIN PIN PIN PIN PIN PIN 

D56800 D57261 D56809 D56800 D57261 D56809 

S/N S/N S/N S/N S/N S/N 

MN246 264 312 MN288 348 MN357 

MN247 265 313 MN289 307 MN358 

MN248 266 314 MN290 308 MN359 

MN249 267 315 MN292 309 MN360 

MN250 269 316 MN293 310 MN361 

MN251 270 318 MN295 311 MN362 

MN252 271 319 MN296 312 MN363 

MN253 272 320 MN297 313 MN364 

MN254 274 321 MN298 313 MN365 

MN255 275 322 MN299 314 MN366 

MN256 276 323 MN300 315 MN367 

MN257 277 324 MN301 317 MN368 

MN259 278 325 MN302 318 MN369 

MN260 278 326 MN303 319 MN370 

MN261 279 327 MN304 320 MN371 

MN262 280 328 MN305 321 MN372 

MN263 281 329 MN306 322 MN373 

MN264 281 330 MN307 323 MN374 

MN265 282 332 MN308 325 MN375 

MN266 283 333 MN309 326 MN376 

MN267 284 334 MN310 327 MN378 

MN268 285 335 MN311 328 MN379 

MN269 286 336 MN312 329 MN380 

MN270 287 337 MN313 330 MN381 

MN271 288 338 MN314 332 MN382 

MN272 289 340 MN315 333 MN383 

MN273 292 342 MN316 334 MN384 

MN274 293 343 MN317 335 MN385 

MN275 294 344 MN318 336 MN386 

MN276 295 345 MN319 338 MN387 

MN277 296 346 MN320 339 MN388 

MN279 297 347 MN321 340 MN389 

MN280 298 348 MN322 341 MN390 

MN281 299 349 MN323 342 MN391 

MN282 300 351 MN324 343 MN392 

MN283 301 MN352 MN325 344 MN393 

MN284 302 MN353 MN326 345 MN394 

MN285 303 MN354 MN327 346 MN395 

MN286 304 MN355 MN328 347 MN396 

MN287 305 MN356 MN329 348 MN398 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 15 of 22

PIN PIN PIN PIN PIN PIN 

D56800 D57261 D56809 D56800 D57261 D56809 

S/N S/N S/N S/N S/N S/N 

MN330 349 MN399 MN421 391 MN516 

MN331 350 MN400 MN423 392 MN517 

MN332 351 MN401 MN425 393 MN518 

MN333 352 MN402 MN437 394 MN519 

MN334 353 MN403 MN447 395 MN521 

MN335 354 MN404 MN449 396 MN524 

MN338 355 MN405 MN450 397 MN525 

MN339 356 MN406 MN452 398 MN526 

MN341 356 MN407 399 MN527 

MN342 357 MN408 400 MN529 

MN343 359 MN411 401 MN530 

MN344 360 MN412 402 MN532 

MN345 361 MN413 403 MN533 

MN347 362 MN415 404 MN534 

MN349 363 MN416 405 MN535 

MN350 364 MN417 406 MN537 

MN351 365 MN419 407 MN538 

MN352 367 MN420 408 MN539 

MN353 368 MN421 409 MN540 

MN354 369 MN423 410 MN541 

MN355 370 MN424 411 MN543 

MN356 371 MN425 412 MN544 

MN358 372 MN427 413 MN546 

MN360 374 MN429 414 MN547 

MN361 375 MN430 415 MN548 

MN362 376 MN431 416 MN549 

MN366 377 MN432 417 MN550 

MN367 378 MN433 418 MN551 

MN369 379 MN435 419 MN552 

MN371 380 MN436 420 MN553 

MN372 381 MN437 421 MN554 

MN375 382 MN439 422 MN555 

MN376 383 MN440 423 MN556 

MN377 384 MN464 424 MN557 

MN378 385 MN507 425 MN558 

MN379 386 MN508 426 MN559 

MN380 387 MN511 427 MN560 

MN404 388 MN512 428 MN561 

MN416 389 MN513 429 MN565 

MN417 390 MN514 430 MN570 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 16 of 22

PIN PIN PIN PIN PIN 

D57261 D56809 D62079 D57261 D62079 

S/N S/N S/N S/N S/N 

431 MN578 MN02 MN478 MN65 

432 MN600 MN03 MN480 MN66 

433 MN04 MN481 MN67 

434 MN05 MN482 MN68 

435 MN08 MN490 MN69 

436 MN09 MN491 MN70 

437 MN10 MN492 MN71 

438 MN11 MN493 MN72 

439 MN13 MN496 MN73 

440 MN16 MN497 MN74 

441 MN17 MN498 MN75 

442 MN19 MN499 MN76 

443 MN22 MN500 MN77 

444 MN24 MN501 MN78 

445 MN26 MN502 MN79 

446 MN27 MN503 MN80 

MN447 MN33 MN504 MN81 

MN448 MN34 MN505 MN82 

MN449 MN36 MN506 MN83 

MN451 MN38 MN507 MN85 

MN452 MN39 MN508 MN86 

MN454 MN41 MN509 MN87 

MN455 MN42 MN511 MN88 

MN456 MN43 MN512 MN89 

MN457 MN44 MN513 MN90 

MN458 MN45 MN514 MN91 

MN459 MN47 MN515 MN92 

MN460 MN49 MN516 MN93 

MN461 MN50 MN517 MN94 

MN462 MN53 MN518 MN95 

MN463 MN54 MN519 MN96 

MN464 MN55 MN520 MN97 

MN465 MN56 MN521 MN98 

MN466 MN57 MN547 MN99 

MN467 MN59 MN548 MN100 

MN468 MN60 MN549 MN101 

MN469 MN61 MN550 MN102 

MN470 MN62 MN551 MN103 

MN471 MN63 MN552 MN104 

MN473 MN64 MN553 MN105 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 17 of 22

PIN PIN PIN PIN PIN PIN 

D57261 D62079 D57261 D62079 D57261 D62079 

S/N S/N S/N S/N S/N S/N 

MN554 MN106 MN597 MN152 MN639 MN208 

MN555 MN107 MN598 MN153 MN640 MN210 

MN556 MN110 MN599 MN154 MN641 MN211 

MN557 MN111 MN600 MN155 MN642 MN213 

MN558 MN112 MN602 MN157 MN643 MN215 

MN559 MN113 MN603 MN158 MN644 MN216 

MN560 MN114 MN604 MN159 MN645 MN217 

MN561 MN115 MN605 MN160 MN646 MN219 

MN562 MN116 MN606 MN161 MN647 MN220 

MN563 MN117 MN607 MN162 MN648 MN221 

MN565 MN118 MN608 MN163 MN649 

MN566 MN119 MN609 MN164 MN651 

MN567 MN120 MN610 MN166 MN652 

MN568 MN121 MN610 MN167 MN653 

MN569 MN122 MN611 MN168 MN654 

MN570 MN124 MN612 MN169 MN655 

MN572 MN125 MN613 MN170 MN656 

MN573 MN126 MN614 MN171 MN657 

MN574 MN127 MN615 MN172 MN658 

MN575 MN130 MN616 MN173 MN659 

MN576 MN131 MN617 MN174 MN660 

MN577 MN132 MN618 MN177 MN661 

MN578 MN134 MN619 MN182 MN662 

MN580 MN135 MN620 MN183 MN663 

MN581 MN136 MN621 MN186 MN666 

MN582 MN137 MN622 MN187 MN667 

MN583 MN138 MN623 MN188 MN668 

MN584 MN139 MN624 MN189 MN669 

MN585 MN140 MN625 MN190 MN670 

MN586 MN141 MN626 MN191 MN671 

MN587 MN142 MN627 MN192 MN672 

MN588 MN143 MN628 MN194 MN673 

MN589 MN144 MN629 MN195 MN674 

MN590 MN145 MN630 MN196 MN675 

MN591 MN146 MN631 MN198 MN676 

MN592 MN147 MN632 MN199 MN677 

MN593 MN148 MN633 MN200 MN678 

MN594 MN149 MN634 MN202 MN679 

MN595 MN150 MN635 MN203 

MN596 MN151 MN636 MN205 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 18 of 22

PIN PIN PIN 

D57261 D57261 D57261 

S/N S/N S/N 

MN680 MN725 MN706 

MN681 MN726 MN707 

MN682 MN729 MN709 

MN683 MN730 MN710 

MN684 MN731 MN711 

MN685 MN733 MN712 

MN686 MN734 MN713 

MN688 MN735 MN714 

MN689 MN736 MN715 

MN690 MN737 MN716 

MN691 MN738 MN717 

MN692 MN739 MN718 

MN694 MN740 MN719 

MN695 MN741 MN720 

MN697 MN742 MN721 

MN698 MN743 MN722 

MN699 MN744 MN723 

MN700 MN745 MN724 

MN701 MN746 

MN703 MN748 

MN704 MN757 

MN705 MN787 

NOTE: Pins D56800, D56809, D57261 and D62079, to be inspected are: those previously inspected 

by SPRO (in the frame of SB 631-32-127 or SB 631-32-128) or when the MRO is unknown. 

Pins already inspected in the frame of SB 631-32-215 do not need to be re-inspected. 

B. Reason 

(1) To ensure that the main landing gear leg/aircraft hinge pin, brace assembly center pins, 

swinging lever/barrel hinge pin, swinging lever/universal joint hinge pin and shock 

absorber/universal joint hinge pin are free of burning marks and cracks. 

C. Classification 

Mandatory 

 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 19 of 22

D. Description (see figure 1)

(1) The accomplishment of this Service Bulletin consists in a one time inspection in the 

workshop, at the landing gear overhaul, of subject pins D56800 or D56800-1, D57261, 

D56809 or D62079, D57401, D57407, D56841, D58807, D62054, D62055, D63823 and 

D63825 installed on MLG or in spare. 

(2) Tasks to be carried out 

a) Workshop inspection (workshop inspection is done by M.R.O.) 

E. Approval 

The technical content of this document is approved under the authority of D.O.A. 

N° EASA.21J044 

F. Manpower 

Work performed during overhaul. 

G. Material - Cost and availability 

(1) Material 

None. 

(2) Cost : 

In case of scrap of the pin due to evidence of burn mark and/or crack, the replacement 

pin will be chargeable at a discounted catalogue price - discount to be defined on a 

case by case basis, using a prorata calculation between CSN and life limit of the 

concerned P/N. 

H. References 

- EASA Proposed Airworthiness Directive No. 14-034. 

- EASA Airworthiness Directive No. TBC. 

- DGAC Airworthiness Directive No. 96-131-064 (B) 

- Standard Practice Manual 20-00-10, PCS 2110 

- Standard Practice Manual 20-00-10, PCS 3600 

- Standard Practice Manual 20-00-10, PCS 3100 

I. Other publications affected 

None. 
Juanary 13, 2014

* D56800 a

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tion of the hi

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BUL

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631-32-2

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Page 20

D62079 

215 

32-215

0 of 22
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 21 of 22

2. ACCOMPLISHMENT INSTRUCTIONS 

A. General 

This Service Bulletin is accomplished during overhaul of the MLG Legs and braces. 

The inspections and the reconditioning of the pins are accomplished in the workshop. 

B. Inspection of hinge pin in workshop (by M.R.O.) 

(1) Do a visual inspection of the part. 

- If chromium found crack, ship the part to Messier-Bugatti-Dowty Laboratory at, 

Materials Laboratory 

Messier-Dowty Ltd 

Cheltenham Road East 

Gloucester 

GL2 9QH 

England 

Attention to Sarah Jones 

Join to the part shipped a copy of the reporting form of the workshop, at the end of this SB. 

- If no crack found on the chromium inspect the part as per (3) and (4). 

(2) Remove the chromium plating in accordance with PCS 2110 

(3) Do an inspection in accordance with PCS 3600 

(4) Do a magnetic particle inspection in accordance with PCS 3100. 

(5) If finding on (3) or (4), ship the part to Messier-Bugatti-Dowty Laboratory at, 

Materials Laboratory 

Messier-Dowty Ltd 

Cheltenham Road East 

Gloucester 

GL2 9QH 

England 

Attention to Sarah Jones 

Join to the part shipped a copy of the reporting form of the workshop, at the end of this SB. 

 - If no finding, re apply the chromium, as per (6). 

(6) Re apply chromium plating in accordance with PCS 2110. 

NOTE: Complete the REPORTING FORM (at the end of this Service Bulletin) 

C. Inspection reports 

Send the inspection reports duly completed to MESSIER-BUGATTI-DOWTY Technical 

Support. 

mailto: eamecsc@safranmbd.com 

Fax: (+33) 1 46297948 

With complete data filled by repair station. 
 631-32-215 

SERVICE BULLETIN 

Juanary 13, 2014 Service Bulletin N° 631-32-215

Page 22 of 22

REPORTING FORM 

ATR42 MLG Hinge Pins Inspection 

MBD/RIL/215/2013 

Please complete all areas with relevant data for each pin. 

INSPECTION OF PINS BASE METAL BEHAVIOUR IN REPAIR SHOP 

REPAIR CENTER : DATE : 

OPERATOR : 

LEG ASSY : 

LEG P/N + SN : 

A/C MSN 

TOTAL CYCLES : CSN : CSO : 

P/N OF PIN CSN : 

S/N OF PIN CSO : 

ACID ETCH finding 

defect 

YES : NO : 

MAGNETIC PARTICLE 

INSPECTION finding 

defect 

YES : NO : 

Please return by email or Fax to: 

MESSIER-BUGATTI-DOWTY Technical Support 

mailto: eamecsc@safranmbd.com 

Fax: (+33) 1 46297948 

With complete data filled by repair station.