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Commercial

Airplane

Group 767

Service Bulletin

Number: 767-27-0201

Date: June 27, 2007

ATA System: 2731

SUBJECT: FLIGHT CONTROLS - Elevator - Repetitive Pogo Check

BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET

Copyright © 2007 The Boeing Company

Unpublished Work - All Rights Reserved

Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable 

subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.

This document includes proprietary information owned by The Boeing Company and/or one or more third 

parties. Treatment of the document and the information it contains is governed by contract with Boeing. For 

more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.

Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, DC-8, DC-9, 

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BOEING SERVICE BULLETIN 767-27-0201

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 Table of Contents

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BOEING SERVICE BULLETIN 767-27-0201

Table of Contents

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 13

3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 13

K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 13

2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 15

3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 15

3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
 Table of Contents

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BOEING SERVICE BULLETIN 767-27-0201

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Commercial

Airplane

Group 767

Service Bulletin

Number: 767-27-0201 Summary

Date: June 27, 2007

ATA System: 2731

SUBJECT: FLIGHT CONTROLS - Elevator - Repetitive Pogo Check

CONCURRENT REQUIREMENTS

Refer to Paragraph 1.B., Concurrent Requirements.

BACKGROUND

This service bulletin gives instructions to do repetitive pogo checks of the elevator Power Control Actuator (PCA) 

input rod assemblies. As an alternative to Boeing Alert Service Bulletin 767-27A0169, the incorporation of 

Boeing Service Bulletin 767-27-0187 to replace or rework elevator PCA bellcranks combined with the repetitive 

check of the elevator PCA input rod assemblies recommended in this service bulletin and the repetitive check 

ofthe elevator PCA rigging recommended in Boeing Service Bulletin 767-27-0203 will prevent continued 

operation with yielded or failed shear rivets in a bellcrank assembly for the elevator PCA and will also allow for 

longer inspection intervals. Operators are currently required by the Federal Aviation Administration (FAA) 

Airworthiness Directive (AD) 2001-04-09 to do the 400 flight-hour repetitive check recommended in Boeing Alert 

Service Bulletin 767-27A0169. 

One operator reported the left elevator drooping during a preflight check. Examination of the elevator control 

system found sheared rivets in the left-inboard and center PCA bellcrank assemblies. The elevator single 

hydraulic system check required by a Certification Maintenance Requirement (CMR) may not detect yielded or 

failed shear rivets in the bellcrank assemblies for the elevator PCA. As a result, the FAA issued AD 2000-17-05 

to mandate the accomplishment of the actions specified in Boeing Alert Service Bulletin 767-27A0166, dated 

August 17, 2000.

Since the issuance of AD 2000-17-05, the FAA has received reports that several 767-200, 767-300, and 767-

300F airplanes failed the one-time functional check of the shear rivets required by the AD. As a result, the FAA 

issued AD 2001-04-09 to mandate the accomplishment of the actions specified in Boeing Alert Service Bulletin 

767-27A0169, dated November 21, 2000.

A detailed design review found that the override device incorporated into the input rod assembly of the PCA 

provides protection against malfunctions and non-normal PCA operation. This design review also found that the 

shear rivets are not needed. The completion of Boeing Service Bulletin 767-27-0187 to replace or rework 

elevator PCA bellcranks combined with the repetitive check of the elevator PCA input rod assemblies 

recommended in this service bulletin and the repetitive check of the elevator PCA rigging recommended in 

Boeing Service Bulletin 767-27-0203 is an alternative to the 400 fllight-hour repetitive check recommended in 

Boeing Alert Service Bulletin 767-27A0169.

Boeing Service Related Problem (SRP) 767-SRP-27-0128 is related to this service bulletin.
 

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BOEING SERVICE BULLETIN 767-27-0201

ACTION (PRR B12901-35S)

Do a pogo check of the input rod assembly on each of the six elevator PCAs. 

EFFECTIVITY

767-400ER airplanes. See Service Bulletin Paragraph 1.A.1 for effectivity.

COMPLIANCE

The FAA will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness 

Directive will make the compliance tasks and times given in this service bulletin mandatory.

See Service Bulletin Paragraph 1.E. for compliance information.

INDUSTRY SUPPORT INFORMATION

Boeing warranty remedies are not available for the inspection, and/or repair procedures given in this service 

bulletin.

MANPOWER

MATERIAL INFORMATION

None.

Total Task Hours Elapsed Hours

32.0 16.0
 

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BOEING SERVICE BULLETIN 767-27-0201

ELEVATOR PCA'S

(LEFT SIDE SHOWN)

ASSEMBLY (TYPICAL)

DO POGO CHECK

(6 LOCATIONS)

INPUT ROD

FWD

479835
 

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BOEING SERVICE BULLETIN 767-27-0201

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Commercial

Airplane

Group 767

Service Bulletin

Number: 767-27-0201

Date: June 27, 2007

ATA System: 2731

SUBJECT: FLIGHT CONTROLS - Elevator - Repetitive Pogo Check

1. PLANNING INFORMATION

A. Effectivity

1. Airplanes

Refer to Service Bulletin Index Document D624T001 Part 3 for Airplane Variable Number, Line 

Number, and Serial Number data.

This service bulletin is for the airplanes shown below. Refer to PRR B12901-35S for data about 

this change.

NOTE: This service bulletin is for the airplanes identified below. The effectivity list shown below

is complete for airplanes through line number 878. Airplanes after line number 878 are

also affected by this service bulletin. These airplanes will be added to the service

bulletin’s MyBoeingFleet.com (MBF) "get effectivity" result when they are added to the

MBF Fleet Profile Page.

Airplane models:

767-400ER

IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER

CONTINENTAL AIRLINES (CAL)

1 VQ071–VQ086

DELTA AIR LINES (DAL)

1 VQ001–VQ021

GROUP CONFIGURATION DESCRIPTION

1 - 767-400ER airplanes line numbers 1-901 

require incorporation of SB 767-27-0187.

2 - 767-400ER airplanes line numbers 902 and on 

do not require SB 767-27-0187. Intent of SB 

767-27-0187 was done in production for these 

airplanes.
 

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BOEING SERVICE BULLETIN 767-27-0201

IDENTIFICATION BY VARIABLE NUMBER

2. Spares Affected

None.

B. Concurrent Requirements

The service bulletin listed below must be done before or at the same time as this service bulletin:

Group 2: None. The changes given in Boeing Service Bulletin 767-27-0187 were made on these 

airplanes before delivery.

C. Reason

This service bulletin gives instructions to do repetitive pogo checks of the elevator Power Control 

Actuator (PCA) input rod assemblies. As an alternative to Boeing Alert Service Bulletin 767-27A0169, 

the incorporation of Boeing Service Bulletin 767-27-0187 to replace or rework elevator PCA bellcranks 

combined with the repetitive check of the elevator PCA input rod assemblies recommended in this 

service bulletin and the repetitive check ofthe elevator PCA rigging recommended in Boeing Service 

Bulletin 767-27-0203 will prevent continued operation with yielded or failed shear rivets in a bellcrank 

assembly for the elevator PCA and will also allow for longer inspection intervals. Operators are 

currently required by the Federal Aviation Administration (FAA) Airworthiness Directive (AD) 2001-04-

09 to do the 400 flight-hour repetitive check recommended in Boeing Alert Service Bulletin 767-

27A0169. 

One operator reported the left elevator drooping during a preflight check. Examination of the elevator 

control system found sheared rivets in the left-inboard and center PCA bellcrank assemblies. The 

elevator single hydraulic system check required by a Certification Maintenance Requirement (CMR) 

may not detect yielded or failed shear rivets in the bellcrank assemblies for the elevator PCA. As a 

result, the FAA issued AD 2000-17-05 to mandate the accomplishment of the actions specified in 

Boeing Alert Service Bulletin 767-27A0166, dated August 17, 2000.

Since the issuance of AD 2000-17-05, the FAA has received reports that several 767-200, 767-300, 

and 767-300F airplanes failed the one-time functional check of the shear rivets required by the AD. 

As a result, the FAA issued AD 2001-04-09 to mandate the accomplishment of the actions specified 

in Boeing Alert Service Bulletin 767-27A0169, dated November 21, 2000.

Variable Group

VQ001–VQ021 1

VQ071–VQ086 1

Group 1: 

Company Service Bulletin Description

Boeing 767-27-0187 Original Issue Elevator Power Control Actuator Bellcrank 

Replacement
 

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BOEING SERVICE BULLETIN 767-27-0201

A detailed design review found that the override device incorporated into the input rod assembly of the 

PCA provides protection against malfunctions and non-normal PCA operation. This design review 

also found that the shear rivets are not needed. The completion of Boeing Service Bulletin 767-27-

0187 to replace or rework elevator PCA bellcranks combined with the repetitive check of the elevator 

PCA input rod assemblies recommended in this service bulletin and the repetitive check of the 

elevator PCA rigging recommended in Boeing Service Bulletin 767-27-0203 is an alternative to the 

400 fllight-hour repetitive check recommended in Boeing Alert Service Bulletin 767-27A0169.

Boeing Service Related Problem (SRP) 767-SRP-27-0128 is related to this service bulletin.

D. Description

Do a pogo check of the input rod assembly on each of the six elevator PCAs. 

E. Compliance

The FAA will possibly release an Airworthiness Directive related to this service bulletin. The 

Airworthiness Directive will make the compliance tasks and times given in this service bulletin 

mandatory.

F. Approval

This service bulletin was examined by the Federal Aviation Administration (FAA). The changes 

specified in this service bulletin comply with the applicable regulations and are FAA approved, as well 

as European Aviation Safety Agency (EASA)/Joint Aviation Authorities (JAA) approved for all EASA/

JAA approved airplanes listed in the service bulletin effectivity. This service bulletin and its approval 

were based on the airplane in its original Boeing delivery configuration or as modified by other 

approved Boeing changes.

If an airplane has a non-Boeing modification or repair that affects a component or system also affected 

by this service bulletin, the operator is responsible for obtaining appropriate regulatory agency 

approval before incorporating this service bulletin.

Table 1: Check Operation of the Input Rod Assemblies of the Left and Right Elevator PCA

Condition Action

Compliance Time

(Whichever Occurs Last)

Repeat Interval 

(Not to Exceed)

All Airplanes Do Elevator 

Pogo Check 

as given in 

Accomplishme

nt Instructions 

3.B.

Before 12,000 

total flight hours 

since the date 

of issuance of 

the original 

standard 

airworthiness 

certificate or the 

date of 

issuance of the 

original export 

certificate of 

airworthiness

Before 12,000 

total flight hours 

since 

completion of 

the last pogo 

check

Within 6,000 

flight hours 

after the date 

on this service 

bulletin

12,000 flight hours
 

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BOEING SERVICE BULLETIN 767-27-0201

This service bulletin has been approved by the FAA. In addition, the Manager of the FAA Seattle 

Aircraft Certification Office approves the action (i.e. inspection or modification) defined in this service 

bulletin combined with the actions defined in Boeing Service Bulletins 767-27-0187 and 767-27-0203 

as an alternative method of compliance to the requirements of paragraph (a) of AD 2001-04-09. All 

provisions of AD 2001-04-09 that are not specifically referenced in the above statement remain fully 

applicable and must be complied with.

G. Manpower

The table below shows an estimate of the task-hours necessary to do the pogo check for each 

airplane. This estimate is for direct labor only, done by an experienced crew. Adjust the estimate with 

operator task-hour data if necessary. The estimate does not include lost time. These are some 

examples of lost time:

— Time to adjust to the workplace

— Time to schedule the work

— Time to examine the work

— Time to find the tools.

H. Weight and Balance Changes

None.

I. Electrical Load Data

Not changed.

Group 1-2: 

Work Package 

Number Task

Number of 

Persons Task-Hours Elapsed Hours

1 Remove input rod assemblies 2 1.5 0.75

Check input rod assemblies 2 12.0 6.0

Install input rod assemblies 2 1.5 0.75

Adjust input rod assemblies 2 1.0 0.5

TOTAL FOR WORK PACKAGE 1 (a) 16.0 8.0

2 Remove input rod assemblies 2 1.5 0.75

Check input rod assemblies 2 12.0 6.0

Install input rod assemblies 2 1.5 0.75

Adjust input rod assemblies 2 1.0 0.5

TOTAL FOR WORK PACKAGE 2 (a) 16.0 8.0

TOTAL FOR EACH AIRPLANE 32.0 16.0

(a) This is total time to do tasks for all 3 elevator PCAs
 

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BOEING SERVICE BULLETIN 767-27-0201

J. References

1. Existing Data:

a. Engineering Change Memo PRR B12901-35S

b. Service Related Problem (SRP) 767-SRP-27-0128

c. 767 Aircraft Maintenance Manual (AMM) 27-31-00, 27-31-07

d. 767 Structural Repair Manual (SRM) Chapter 51

e. Component Maintenance Manual (CMM) 27-31-64

f. Boeing Service Bulletin 767-27A0166

g. Boeing Service Bulletin 767-27A0169

h. Boeing Service Bulletin 767-27-0187

i. Boeing Service Bulletin 767-27-0203

j. FAA Airworthiness Directive 2000-17-05

k. FAA Airworthiness Directive 2001-04-09

l. Boeing Drawing 012W6100 

2. Data supplied with this Service Bulletin:

None.

3. Installation Drawings Used in the Preparation of this Service Bulletin:

None.

K. Publications Affected

None.

L. Interchangeability and Intermixability of Parts

Accomplishment of this service bulletin does not affect interchangeability or intermixability of parts.
 

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BOEING SERVICE BULLETIN 767-27-0201

2. MATERIAL INFORMATION

A. Material - Price and Availability

None.

B. Industry Support Information

Boeing warranty remedies are not available for the inspection, and/or repair procedures given in this 

service bulletin.

C. Parts Necessary For Each Airplane

1. Kits/Parts:

None.

2. Parts and Materials Supplied by the Operator:

None.

3. Parts Modified and Reidentified:

None.

4. Parts Removed and Not Replaced:

None.

D. Parts Necessary to Change Spares

None.

E. Special Tooling - Price and Availability

None.

F. Special Tooling Necessary to do this Service Bulletin

No special tools or equipment are necessary to do the change in this service bulletin. But, 

maintenance and overhaul tools in the manuals given in Paragraph 1.J., References, can be 

necessary. Examine operator tool supply to make sure all necessary tools are available.
 

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BOEING SERVICE BULLETIN 767-27-0201

3. ACCOMPLISHMENT INSTRUCTIONS

A. GENERAL INFORMATION

WARNING: DO NOT SUPPLY HYDRAULIC POWER DURING THE REMOVAL / INSTALLATION

OF THE PCA CONTROL ROD. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT

CAN OCCUR.

CAUTION: KEEP THE WORK AREA, WIRES AND ELECTRICAL BUNDLES CLEAN OF METAL

PARTICLES OR CONTAMINATION WHEN YOU USE TOOLS. UNWANTED

MATERIAL, METAL PARTICLES OR CONTAMINATION CAUGHT IN WIRE BUNDLES

CAN CAUSE DAMAGE TO THE BUNDLES. DAMAGED WIRE BUNDLES CAN CAUSE

SPARKS OR OTHER ELECTRICAL DAMAGE.

NOTE:

1. Manual titles are referred to by acronyms. Refer to Paragraph 1.J., References, for 

definition of the acronyms.

2. Obey all of the warnings and cautions given in the specified manual sections.

3. The work instructions are divided into work packages. Task-Hours and Elapsed-Hours 

for each package are given in Paragraph 1.G., Manpower. You can do each work 

package independently.The work instructions for the left and right elevators are the 

same and both work packages need to be completed before the plane is returned to 

service.

4. For approved fastener and process material substitutions, refer to 767 Structural Repair 

Manual, Chapter 51, Alternate fasteners are given in 767 Structural Repair Manual 

Chapter 51 and Boeing Drawing 012W6100.

5. These work instructions refer to procedures included on other Boeing documents. When 

the words "refer to" are used and the operator has an accepted alternative procedure, 

the accepted alternative procedure can be used. When the words "as given in" are 

included in the instruction, the procedure in the Boeing document must be used.

B. WORK INSTRUCTIONS

WORK PACKAGE 1 - LEFT ELEVATOR POGO CHECK

1. Repeat the following steps for each of the three elevator Power Control Actuators (PCA):

a. Remove the elevator PCA input rod assembly. Refer to 767 AMM 27-31-07 as an accepted 

procedure.

b. Do the following functional test on the elevator PCA input rod assembly. 

(1) Make sure that the load is 42-62 lbs for initial breakout in the extending and collapsing 

directions.

(2) Make sure that the load is 67-97 lbs for travel 0.005 to 0.020 inches from the fully 

compressed or extended position.
 

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BOEING SERVICE BULLETIN 767-27-0201

(3) Make sure that the deflection is 1.15-1.35 inches in both the fully compressed or 

extended position at full travel of the elevator PCA input rod assembly.

(4) Make sure that all operations are smooth and free from binding.

c. Replace or overhaul the elevator PCA input rod assembly if it fails to meet any requirement 

above. Refer to CMM 27-31-64 as an accepted procedure. 

d. Install the elevator PCA input rod assembly. Refer to 767 AMM 27-31-07 as an accepted 

procedure.

2. Adjust the PCA input rod assembly. Refer to 767 AMM 27-31-00 as an accepted procedure.

3. Put the airplane back to a serviceable condition.

WORK PACKAGE 2 - RIGHT ELEVATOR POGO CHECK

1. Repeat the following steps for each of the three elevator PCAs:

a. Remove the elevator PCA input rod assembly. Refer to 767 AMM 27-31-07 as an accepted 

procedure.

b. Do the following functional test on the elevator PCA input rod assembly. Refer to CMM 

27-31-64 as an accepted procedure. 

(1) Make sure that the load is 42-62 lbs for initial breakout in the extending and collapsing 

directions.

(2) Make sure that the load is 67-97 lbs for travel 0.005 to 0.020 inches from the fully 

compressed or extended position.

(3) Make sure that the deflection is 1.15-1.35 inches in both the fully compressed or 

extended position at full travel of the elevator PCA input rod assembly.

(4) Make sure that all operations are smooth and free from binding.

c. Replace or overhaul the elevator PCA input rod assembly if it fails to meet any requirement 

above. Refer to CMM 27-31-64 as an accepted procedure. 

d. Install the elevator PCA input rod assembly. Refer to 767 AMM 27-31-07 as an accepted 

procedure.

2. Adjust the PCA input rod assembly. Refer to 767 AMM 27-31-00 as an accepted procedure.

3. Put the airplane back to a serviceable condition.