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Commercial Airplanes 727 Requirements Bulletin ALERT Number: 727-57A0188 RB Original Issue: May 31, 2018 ATA System: 5752 2751 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Tracks Inspection at Flap Track Positions 1, 2, 7, and 8 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 © 2018 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Unpublished Work.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: May 31, 2018 727-57A0188 RB 1 of 20
2.0
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 2 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Table of Contents
1. EFFECTIVITY5
A. Airplanes5
B. Spares Affected5
2. CONCURRENT REQUIREMENTS6
3. COMPLIANCE6
4. APPROVAL8
5. ACCOMPLISHMENT INSTRUCTIONS9
A. General Information9
B. Work Instructions10
FIGURE 1: FLAP TRACK POSITION 1, 2, 7, AND 8 - SURFACE HFEC INSPECTION13
FIGURE 2: LEFT WING - FLAP TRACK AND REAR SPAR ATTACHMENT - DETAILED INSPECTION
.17
FIGURE 3: RIGHT WING - FLAP TRACK AND REAR SPAR ATTACHMENT - DETAILED INSPECTION
.19
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 3 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 4 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Commercial Airplanes 727 Requirements Bulletin ALERT Number: 727-57A0188 RB Original Issue: May 31, 2018 ATA System: 5752 2751 SUBJECT: WINGS - Trailing Edge Flaps - Outboard Flap Tracks Inspection at Flap Track Positions 1, 2, 7, and 8
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 727, 727-100, 727-100C, 727-200, 727-200F, and 727C Airplanes, line numbers 1 thru 1832 in 1 Group.
B. Spares Affected Examine your spares supply for the parts or components identified below. If any parts or components are found, refer to Paragraph 5.B., WORK INSTRUCTIONS of Requirements Bulletin 727-57A0188 RB for the recommended action.
Flap Track PositionPart Number 1 / 2 / 7 / 865-19250-2 1 / 2 / 7 / 865-19250-3 1 / 2 / 7 / 865-19250-4 1 / 2 / 7 / 865-19250-5 1 / 2 / 7 / 865-19250-6 1 / 2 / 7 / 865-19250-7 1 / 2 / 7 / 865-19250-8 1 / 2 / 7 / 865-19250-9 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 5 of 20
2. CONCURRENT REQUIREMENTS None.
3. COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to Requirements Bulletin 727-57A0188 RB. The Airworthiness Directive will make the compliance tasks and times given in Requirements Bulletin 727-57A0188 RB mandatory.
Accomplish the required action(s), based on the applicable conditions in Table 1, 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 number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number.
The actions required for each INSPECTION in Table 1 are identified as follows:
ActionTitle Do a surface High Frequency Eddy Current (HFEC) Inspection of the flap track flanges and webs for any crack.
INSPECTION 1 Do a detailed inspection of the flap track interface with the rear spar attachment with the flap track for any discrepancy. A discrepancy is defined as any loose fastener, corrosion, damaged or missing anti-fret strip, or damaged or missing shim.
INSPECTION 2 Table 1: Detailed Inspection and Surface HFEC Inspection of the Outboard Flap Tracks at Positions 1, 2, 7, and 8 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 120 days after the original issue date of Requirements Bulletin 727- 57A0188 RB.
Within 500 flap track flight cycles or 1 year, whichever occurs first, after the most recent overhaul of the affected flap track.
ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have known maintenance records and on which an overhaul was done. -ACTION 2: Do INSPEC-TION 2 at each affected flap track.
-Within 120 days after the original issue date of Requirements Bulletin 727- 57A0188 RB.
Within 2,000 flap track flight cycles or 4 years, whichever occurs first, since the affected flap track was new.
ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have known maintenance records and on which no overhaul was done. ACTION 2: Do INSPEC-TION 2 at each affected flap track.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 6 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Table 1: Detailed Inspection and Surface HFEC Inspection of the Outboard Flap Tracks at Positions 1, 2, 7, and 8 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition -Within 120 days after the original issue date of Requirements Bulletin 727-57A0188 RB.
ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have unknown maintenance records.
Within 120 days after the original issue date of Requirements Bulletin 727-57A0188 RB.
ACTION 2: Do INSPEC- TION 2 at each affected flap track.
500 flight cycles or 1 year, whichever occurs first.
-Repeat INSPECTION 1 at each affected flap track.
CONDITION 1.1: NO
CRACK FOUND DURING INSPECTION 1 (a) -Before further flight.OPTION 1 (ACTION 1):
Contact the Boeing Company for repair instructions and do the repair at each affected flap track.
CONDITION 1.2: ANY
CRACK FOUND DURING INSPECTION 1 (a) 500 flight cycles or 1 year, whichever occurs first.
-OPTION 1 (ACTION 2):
Repeat INSPECTION 1 in the unrepaired area of each affected flap track.
-Before further flightOPTION 2: Remove the flap track and install a new or serviceable flap track (b) 500 flight cycles or 1 year, whichever occurs first.
-Repeat INSPECTION 2 of each affected flap track.
CONDITION 2.1: NO DIS-
CREPANCY FOUND DURING INSPECTION 2
(a) -Before further flight.OPTION 1 (ACTION 1):
Contact the Boeing Company for repair instructions and do the repair at each affected flap track.
CONDITION 2.2: ANY
DISCREPANCY FOUND DURING INSPECTION 2
(a) 500 flight cycles or 1 year, whichever occurs first.
-OPTION 1 (ACTION 2):
Repeat INSPECTION 2 in the unrepaired area of each affected flap track.
-Before further flight.OPTION 2: Remove the flap track and install a new or serviceable flap track.(b)
(a) More than one CONDITION can be applicable on each flap track.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 7 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Table 1: Detailed Inspection and Surface HFEC Inspection of the Outboard Flap Tracks at Positions 1, 2, 7, and 8 Repeat Interval (Not to Exceed) Compliance Time (Whichever Occurs Later) ActionCondition
(b) The replacement flap track, whether new or serviceable or repaired, must be in compliance with the initial inspection requirements and compliance times based on the applicable flap track condition. Inspections previously accomplished in accordance with Requirements Bulletin 727-57A0188 RB can be used to satisfy these requirements, so long as the track continues to comply with repeat intervals specified in the table. Comply with all requirements specified in the table for the flap track installed.
4. APPROVAL 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 service 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.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 8 of 20 REQUIREMENTS BULLETIN 727-57A0188
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5. ACCOMPLISHMENT INSTRUCTIONS A. GENERAL INFORMATION NOTE: 5. Unless shown differently, these dimensions and tolerances are used:
– Linear dimensions are in inches – Tolerance on linear dimensions, other than rivet and bolt edge margins, is plus or minus 0.03 inch – Tolerance on rivet and bolt edge margin is plus or minus 0.05 inch – Angular tolerance is plus or minus 2 degrees – Hole dimensions for standard solid rivets and fasteners are in Structural Repair Manual (SRM) Chapter 51 – Torque Values:
— Values for structural fasteners are given in 727 Structural Repair Manual, Chapter 51.
— Values for airframe maintenance tasks are included in Chapter 20 of 727 Aircraft Maintenance Manual (AMM).
— Values for electrical maintenance tasks are included in Chapter 20 of Standard Wiring Practices Manual (SWPM).
— Values for engine maintenance tasks are included in Chapter 70 of 727 Aircraft Maintenance Manual (AMM).
— Non-standard torque values for maintenance tasks are included in the applicable installation step.
6. Use the approved fastener, process and material substitutions in accordance with SRM Chapter 51.
7. A Detailed Inspection is defined as: An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirrors, magnifying lenses, etc. may be necessary. Surface cleaning and elaborate procedures may be required.
8. These work instructions refer to procedures included in 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 "in accordance with" are included in the instruction, the procedure in the Boeing document must be used.
9. Boeing Service Letter 727-SL-51-041, Damage Reporting and Repair Plan/Design Guidelines, is an acceptable procedure to request information from Boeing for additional structural repair instructions. The Service Letter describes what information must be provided to Boeing before a structural repair can be provided.
10. If it is necessary to remove more parts for access, you can remove those parts. If you can get access without removing identified parts, it is not necessary to remove all of the identified parts. Jacking and shoring limitations must be observed.
11. Where the work instructions include installation of a kept part, a new or serviceable part with the same part number can be installed as an alternative to the kept part.
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Original Issue: May 31, 2018 727-57A0188 RB 9 of 20 REQUIREMENTS BULLETIN 727-57A0188
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12. 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 number or an OPTION number, do all of the ACTION numbers for that CONDITION number or OPTION number.
13. This is an Enhanced Required for Compliance document. There will be a separate Service Bulletin (SB) and a separate Requirements Bulletin (RB). If an RB is mandated by an Airworthiness Directive (AD), then all applicable requirements specified in the RB must be done. For the related SB, some locations are marked RC Start and RC End to identify the requirements that are restated from the RB. For the related SB, the areas between RC Start and RC End, including sub-steps and any figures identified between RC Start and RC End, must be done to comply with the AD.
Therefore, an Alternative Method of Compliance (AMOC) is required for any deviations to steps between RC Start and RC End, including substeps and identified figures.
For the related SB, the steps not between RC Start and RC End may be deviated from using accepted methods in accordance with the operator's maintenance or inspection program without obtaining approval of an AMOC; this is provided that the steps between RC Start and RC End, including sub-steps and identified figures, can still be done as specified, and the airplane can be put back in an airworthy condition.
Figures not required for compliance are omitted from the RB.
14. 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.
B. WORK INSTRUCTIONS Actions Required for Compliance:
1. Requirements The actions required for each INSPECTION in Table 1 are identified as follows:
ActionTitle Do a High Frequency Eddy Current (HFEC) Inspection of the flap track flanges and webs for any crack.
INSPECTION 1 Do a detailed inspection of the flap track interface with the rear spar attachment with the flap track for any discrepancy. A discrepancy is defined as any loose fastener, corrosion, damaged or missing anti-fret strip, or damaged or missing shim.
INSPECTION 2 Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 10 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Table 1: Detailed Inspection and Surface HFEC Inspection of the Outboard Flap Tracks at Positions 1, 2, 7, and 8 Refer to the listed procedures in SB 727-57A0188 Original Issue or later approved revisions as an accepted procedure.
Method of ComplianceActionCondition PART 1: OPEN ACCESS -ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have known maintenance records and on which an overhaul was done.
-FIGURE 1 PART 1: OPEN ACCESS -ACTION 2: Do INSPEC- TION 2 at each affected flap track. -FIGURE 2, FIGURE 3 PART 1: OPEN ACCESS -ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have known maintenance records and on which no overhaul was done.
-FIGURE 1 PART 1: OPEN ACCESS -ACTION 2: Do INSPEC- TION 2 at each affected flap track. -FIGURE 2, FIGURE 3 PART 1: OPEN ACCESS -ACTION 1: Do INSPEC- TION 1 at each affected flap track.
Airplanes with flap tracks that have unknown maintenance records. -FIGURE 1 PART 1: OPEN ACCESS -ACTION 2: Do INSPEC- TION 2 at each affected flap track. FIGURE 2, FIGURE 3 -FIGURE 1Repeat INSPECTION 1 at each affected flap track.
CONDITION 1.1: NO
CRACK FOUND DURING INSPECTION 1 (a) PART 2: CLOSEACCESS- Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 11 of 20 REQUIREMENTS BULLETIN 727-57A0188
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Table 1: Detailed Inspection and Surface HFEC Inspection of the Outboard Flap Tracks at Positions 1, 2, 7, and 8 Refer to the listed procedures in SB 727-57A0188 Original Issue or later approved revisions as an accepted procedure.
Method of ComplianceActionCondition --OPTION 1 (ACTION 1):
Contact the Boeing Company for repair instructions and do the repair at each affected flap track.
CONDITION 1.2: ANY
CRACK FOUND DURING INSPECTION 1 (a) -FIGURE 1OPTION 1 (ACTION 2):
Repeat INSPECTION 1 in the unrepaired area of each affected flap track PART 2: CLOSE ACCESS - 727 AMM 27-51-11-OPTION 2: Remove the flap track and install a new or serviceable flap track (b) PART 2: CLOSE ACCESS - -FIGURE 2, FIGURE 3Repeat INSPECTION 2 of each affected flap track.
CONDITION 2.1: NO DIS-
CREPANCY FOUND DURING INSPECTION 2
(a) PART 2: CLOSE ACCESS - --OPTION 1 (ACTION 1):
Contact the Boeing Company for repair instructions and do the repair at each affected flap track.
CONDITION 2.2: ANY
DISCREPANCY FOUND DURING INSPECTION 2
(a) -FIGURE 2, FIGURE 3OPTION 1 (ACTION 2):
Repeat INSPECTION 2 in the unrepaired area of each affected flap track.
PART 2: CLOSE ACCESS - 727 AMM 27-51-11-OPTION 2: Remove the flap track and install a new or serviceable flap track.(b) PART 2: CLOSE ACCESS -
(a) More than one CONDITION can be applicable on each flap track.
(b) The replacement flap track, whether new or serviceable or repaired, must be in compliance with the initial inspection requirements and compliance times based on the applicable flap track condition. Inspections previously accomplished in accordance with Requirements Bulletin 727-57A0188 RB can be used to satisfy these requirements, so long as the track continues to comply with repeat intervals specified in the table. Comply with all requirements specified in the table for the flap track installed.
Export Controlled ECCN: 9E991 Copyright © Unpublished Work - See page 1 for details.
Original Issue: May 31, 2018 727-57A0188 RB 12 of 20 REQUIREMENTS BULLETIN 727-57A0188