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Commercial Airplanes 757 Requirements Bulletin ALERT Number: 757-27A0159 RB Original Issue: March 29, 2019 Revision 1: April 29, 2020 ATA System: 2711 SUBJECT: FLIGHT CONTROLS - Aileron and Aileron Trim Control System - Aileron Trim Actuator Bearing Rotation Check and Attachment Lug Inspections Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 300-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
Copyright © 2019 Boeing.
Unpublished Work. All Rights Reserved.
Treatment of this document and its content is governed by contract with Boeing. Rights to use this document are licensed on a per aircraft basis and such rights may not be transferable. For more information, contact The Boeing Company.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KC-46, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8, Poseidon and Boeing liveries are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 1 of 23
3.0
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 2 of 23 REQUIREMENTS BULLETIN 757-27A0159
ALERTALERT
BLANK PAGE
Table of Contents
Revision Transmittal Sheet5
1. EFFECTIVITY7
A. Airplanes7
B. Spares Affected8
2. CONCURRENT REQUIREMENTS9
3. COMPLIANCE9
4. APPROVAL11
5. ACCOMPLISHMENT INSTRUCTIONS13
A. General Inf ormation13
B. Work Instructions14
FIGURE 2: MAIN LANDING GEAR WHEEL WELL - AILERON TRIM ACTUATOR BEARING - ROTATION
CHECK18
FIGURE 3: MAIN LANDING GEAR WHEEL WELL - AILERON TRIM ACTUATOR ATTACHMENT LUG -
DETAILED INSPECTION20
FIGURE 4: MAIN LANDING GEAR WHEEL WELL - AILERON TRIM ACTUATOR ATTACHMENT LUG -
HIGH FREQUENCY EDDY CURRENT (HFEC) INSPECTION22
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 3 of 23 REQUIREMENTS BULLETIN 757-27A0159
ALERTALERT
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 4 of 23 REQUIREMENTS BULLETIN 757-27A0159
ALERTALERT
BLANK PAGE
Commercial Airplanes 757 Requirements Bulletin ALERT Revision Transmittal SheetNumber: 757-27A0159 RBOriginal Issue: March 29, 2019 Revision 1: April 29, 2020 ATA System: 2711 SUBJECT: FLIGHT CONTROLS - Aileron and Aileron Trim Control System - Aileron Trim Actuator Bearing Rotation Check and Attachment Lug Inspections This revision includes all pages of the requirements bulletin.
COMPLIANCE INFORMATION RELATED TO THIS REVISION Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-12-13 is related to Requirements Bulletin 757-27A0159 RB.
Effects of this Revision on airplanes on which the Original Issue of Requirements Bulletin 757-27A0159 RB was previously done:
None.
REASON FOR REVISION This revision is sent to add the correct approval statement for 757-200CB airplanes.This revision also incorporates changes requested by operators. The changes affect the parts necessary to do the changes and Figures in the service bulletin. In addition, reference to Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-12-13 has been added.
These sections were changed:
- In Compliance - Added Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-12-13. Changed the compliance time limits.
- In Approval of the Requirements Bulletin - Added approval statement for 757-200CB airplanes and note to clarify approval statement for all airplanes except 757-200CB airplanes. Also added Alternative Method Of Compliance (AMOC) data.
Vertical lines are put on the left edge of each page, except in Paragraph 1.A., Effectivity and format changes, to show the location of all content changes.
Pages with no vertical lines have no changes.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 5 of 23
REVISION HISTORY Service BulletinService BulletinRequirement BulletinRequirement Bulletin 757-27A0159757-27A0159757-27A0159 RB757-27A0159 RB Issue DateIssue Date March 29, 2019Original Issue:March 29, 2019Original Issue:
April 29, 2020Revision 1:April 29, 2020Revision 1:
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 6 of 23 REQUIREMENTS BULLETIN 757-27A0159
ALERTALERT
Commercial Airplanes 757 Requirements Bulletin ALERT Number: 757-27A0159 RB Original Issue: March 29, 2019 Revision 1: April 29, 2020 ATA System: 2711 SUBJECT: FLIGHT CONTROLS - Aileron and Aileron Trim Control System - Aileron Trim Actuator Bearing Rotation Check and Attachment Lug Inspections
THIS DOCUMENT IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH 1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS DOCUMENT TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS DOCUMENT TO THE NEW OWNER. THIS IS AN ENHANCED REQUIRED FOR COMPLIANCE DOCUMENT. THE BOEING
PROCESSES USED TO CREATE THE SERVICE BULLETIN (SB) AND THE REQUIREMENTS BULLETIN (RB) ENSURE THAT THE INFORMATION BETWEEN "RC START" AND "RC END" IN THE SB ARE IDENTICAL TO THE INFORMATION IN THE SAME SECTIONS (COMPLIANCE, WORK INSTRUCTIONS…) OF THE RB WHICH THE SB REFERS TO AS THE RELATED DOCUMENT.
1. Effectivity A. Airplanes This bulletin is applicable to 757-200, 757-200CB, 757-200PF, 757-300 Airplane(s), line number(s) 1-1050 in 1 Group(s). Where the effectivity is presented with hyphens between line numbers, the airplane applicability means "through" and "inclusive", e.g. line numbers 1-9 means line numbers 1 through 9 inclusive.
The Variable Numbers and Group Information for the applicable airplanes is given below.
DESCRIPTIONCONFIGURATIONGROUP All 757 airplanes.-1 Airplane Models:
757-200, 757-200CB, 757-200PF, 757-300 GroupVariable Number 1NA001 - NA028 1NA191 - NA199 1NA201 - NA239 1NA301 - NA305 GroupVariable Number 1NA341 - NA352 1NA391 - NA399 1NA401 - NA408 1NA441 - NA447 GroupVariable Number 1NA501 - NA586 1NB001 - NB004 1NB021 - NB023 1NB036 - NB041 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 7 of 23
GroupVariable Number 1NB051 - NB053 1NB061 - NB073 1NB079 1NB131 - NB148 1NB161 - NB162 1NB166 - NB168 1NB201 - NB204 1NB221 - NB228 1NB230 1NB236 1NB239 1NB261 - NB267 1NB291 - NB299 1NB301 - NB302 1NB311 - NB312 1NB321 - NB331 1NB421 - NB438 1NB446 1NB451 - NB454 1NB501 - NB523 1NB561 1NB571 1NB581 - NB583 1NC001 - NC033 1NC041 - NC042 1NC051 - NC052 1NC056 - NC062 1NC066 - NC084 1NC091 - NC094 1NC151 1NC161 GroupVariable Number 1NC901 - NC951 1NC971 - NC974 1ND001 - ND007 1ND011 - ND059 1ND111 - ND113 1ND161 - ND199 1ND201 - ND203 1ND221 - ND225 1ND241 - ND248 1ND301 - ND322 1ND401 1ND891 1ND895 1NE001 - NE008 1NE011 - NE088 1NE091 - NE094 1NE141 - NE150 1NE161 - NE177 1NE201 - NE204 1NE301 - NE302 1NE311 - NE325 1NJ001 - NJ004 1NJ031 - NJ032 1NJ551 - NJ555 1NL001 - NL002 1NL006 - NL017 1NL101 - NL109 1NL141 1NL601 - NL616 1NN001 - NN002 1NN051 - NN052 GroupVariable Number 1NP901 - NP904 1NS601 - NS616 1NT001 - NT009 1NT201 - NT202 1NT231 - NT234 1NT237 - NT240 1NT242 1NT245 - NT248 1NT281 - NT289 1NT341 - NT347 1NT351 - NT360 1NT371 - NT373 1NT375 - NT379 1NT381 - NT386 1NT401 - NT409 1NT411 - NT412 1NT426 - NT427 1NT431 - NT432 1NT436 - NT438 1NT441 - NT442 1NT446 1NT701 - NT769 1NT791 - NT796 1NT861 - NT862 1NT881 - NT885 1NT901 - NT916 1NT971 - NT985 1NU031 - NU038 1NU701 - NU705 1NU721 - NU728 1NU731 - NU732 B. Spares Affected Examine your spares supply for the parts or components identified below. If any parts or components are found, refer to the Accomplishment Instructions for the recommended action.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 8 of 23 REQUIREMENTS BULLETIN 757-27A0159
ALERTALERT
NamePart Number AILERON TRIM ACTUATOR60B80030-3 OR -4 (SHIMADZU PART NUMBER 732-16810-01 OR -03)
2. CONCURRENT REQUIREMENTS None.
3. COMPLIANCE Federal Aviation Administration (FAA) Airworthiness Directive AD 2019-12-13 is related to Requirements Bulletin 757-27A0159 RB. The effective date of AD 2019-12-13 is July 12, 2019.
Accomplish the required actions, based on the applicable conditions in Tables 1 and 2 in accordance with the Accomplishment Instructions.
When more than one OPTION is given for a CONDITION, do only one of the OPTION numbers. When more than one ACTION is given for a CONDITION or an OPTION, do all of the ACTION numbers for that CONDITION or OPTION.
Table 1: Aileron Trim Actuator Bearing Rotation Check Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Within 1,760 Flight Hours after the effective date of AD 2019-12-13.
Do an Aileron Trim Actuator bearing rotation check to make sure it turns freely. (a) All Airplanes -Before further flight.
Do a HFEC inspection of the Aileron Trim Actuator attachment lug for any crack. (c) CONDITION 1: BEARING
DOES NOT TURN FREELY.
-Before further flight.
CONDITION 1.1 (AC- TION 1): Contact the Boeing Company for repair instructions and do the repair.
CONDITION 1.1: ANY
CRACK IS FOUND DUR-
ING THE HFEC INSPEC-
TION OF THE AILERON
TRIM ACTUATOR AT- TACHMENT LUG -Before further flight.
CONDITION 1.1 (AC- TION 2): Replace the Aileron Trim Actuator with a new or serviceable part.
(b) 1,100 Flight Hours.-CONDITION 1.1 (AC- TION 3): Repeat Aileron Trim Actuator bearing rotation check to make sure it turns freely. (a) Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
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Table 1: Aileron Trim Actuator Bearing Rotation Check Repeat Interval (Not to Exceed) Compliance TimeActionCondition -.Before further flight.
CONDITION 1.2 (AC- TION 1): Replace the Aileron Trim Actuator with a new or serviceable part.
(b) CONDITION 1.2: NO
CRACK IS FOUND DUR-
ING THE HFEC INSPEC-
TION OF THE AILERON
TRIM ACTUATOR AT- TACHMENT LUG 1,100 Flight Hours.-CONDITION 1.2 (AC- TION 2): Repeat Aileron Trim Actuator bearing rotation check to make sure it turns freely. (a) 1,100 Flight Hours.-Repeat Aileron Trim Actuator bearing rotation check to make sure it turns freely. (a) CONDITION 2: BEARING TURNS FREELY.
(a) A bearing that turns freely is defined as: A bearing that moves without ratchet, gritty, or detent like feeling.
(b) The existing Aileron Trim Actuator can be replaced with a new or serviceable Aileron Trim Actuator. A serviceable Aileron Trim Actuator is one with a bearing that turns freely.
(c) If a HFEC inspection of the Aileron Trim Actuator attachment lug for any crack is found to be required as an action for both CONDITION 1 and CONDITION 3, the HFEC inspection is only required to be done once before further flight.
Table 2: Detailed Inspection of the Aileron Trim Actuator Attachment Lug Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Within 1,760 Flight Hours after the effective date of AD 2019-12-13.
Do a Detailed Inspection of the Aileron Trim Actuator attachment lug for any damage and any crack.
(a) All Airplanes -Before further flight.
Do a HFEC inspection of the Aileron Trim Actuator attachment lug for any crack. (b) CONDITION 3: ANY DAM-
AGE OR ANY CRACK IS
FOUND DURING THE
DETAILED INSPECTION
OF THE AILERON TRIM
ACTUATOR ATTACH-
MENT LUG Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 10 of 23 REQUIREMENTS BULLETIN 757-27A0159
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Table 2: Detailed Inspection of the Aileron Trim Actuator Attachment Lug Repeat Interval (Not to Exceed) Compliance TimeActionCondition -Before further flight.
CONDITION 3.1 (AC- TION 1): Contact the Boeing Company for repair instructions and do the repair.
CONDITION 3.1: ANY
CRACK IS FOUND DUR-
ING THE HFEC INSPEC-
TION OF THE AILERON
TRIM ACTUATOR AT- TACHMENT LUG 1,100 Flight Hours.-CONDITION 3.1 (AC- TION 2): Repeat Detailed Inspection of the Aileron Trim Actuator attachment lug for any damage and any crack. (a) 1,100 Flight Hours.-Repeat Detailed Inspection of the Aileron Trim Actuator attachment lug for any damage and any crack. (a) CONDITION 3.2: NO
CRACK IS FOUND DUR-
ING THE HFEC INSPEC-
TION OF THE AILERON
TRIM ACTUATOR AT-
TACHMENT LUG 1,100 Flight Hours.-Repeat Detailed Inspection of the Aileron Trim Actuator attachment lug for any damage and any crack. (a) CONDITION 4: NO DAM-
AGE AND NO CRACK IS
FOUND DURING THE
DETAILED INSPECTION
OF THE AILERON TRIM
ACTUATOR ATTACH-
MENT LUG
(a) Damage is defined as: Any surface problems, such as scratches or dings, which have occurred after the part was manufactured.
(b) If a HFEC inspection of the Aileron Trim Actuator attachment lug for any crack is found to be required as an action for both CONDITION 1 and CONDITION 3, the HFEC inspection is only required to be done once before further flight.
4. APPROVAL NOTE: The approval statement that follows is valid for 757-200CB airplanes.
This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this document comply with the applicable regulations and are FAA approved for all airplanes listed in the Requirements Bulletin effectivity. This document 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 Requirements Bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this Requirements Bulletin.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 11 of 23 REQUIREMENTS BULLETIN 757-27A0159
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In addition, the Manager of the FAA Los Angeles ACO Branch approves accomplishment of the inspection and replacement defined in this Requirements Bulletin revision, as an alternative method of compliance to the requirements of paragraph (g) of FAA Airworthiness Directive (AD) 2019-12-13. All provisions of FAA AD 2019-12-13 that are not specifically referenced in the above statement remain fully applicable and must be complied with accordingly.
NOTE: The approval statement that follows is valid for all affected airplanes, except 757-200CB airplanes.
This Requirements Bulletin was examined by the Federal Aviation Administration (FAA). The changes specified in this document 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 Requirements Bulletin effectivity. This document and its approval were based on the airplane in its original Boeing delivery configuration or as modified by other Boeing changes.
If an airplane has a non-Boeing modification or repair that affects a component or system also affected by this Requirements Bulletin, the operator is responsible for obtaining appropriate regulatory agency approval before incorporating this Requirements Bulletin.
In addition, the Manager of the FAA Los Angeles ACO Branch approves accomplishment of the inspection and replacement defined in this Requirements Bulletin revision, as an alternative method of compliance to the requirements of paragraph (g) of FAA Airworthiness Directive (AD) 2019-12-13. All provisions of FAA AD 2019-12-13 that are not specifically referenced in the above statement remain fully applicable and must be complied with accordingly.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: March 29, 2019 757-27A0159 RBRevision 1: April 29, 2020 12 of 23 REQUIREMENTS BULLETIN 757-27A0159