TextPartly OCR
Some pages are OCR from a scan. OCR can misread letters and numbers.
Query with SQL
duckdb -csv -c "SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = '1a9f35b5282e40354536be8ff616fed8c88d22e81cdbdae92fc221630f04604d' ORDER BY p.page"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT p.page, p.text_source, p.text, f.rights_holder, f.license FROM 'https://openairdocs.org/data/latest/service_document_file_page.parquet' p JOIN 'https://openairdocs.org/data/latest/service_document_file.parquet' f USING (file_sha256) WHERE p.file_sha256 = '1a9f35b5282e40354536be8ff616fed8c88d22e81cdbdae92fc221630f04604d' ORDER BY p.page
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1329 Original Issue: January 16, 2017 ATA System: 5730 SUBJECT: WINGS - Plates/Skin - Upper Aft Skin at Rear Spar from Wing Buttock Line 159 to 220
- Inspection 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:
BOEING PROPRIETARY, CONFIDENTIAL AND/OR TRADE SECRET Copyright © 2017 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Unpublished Work.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: January 16, 2017 737-57A1329 1 of 56
3.0
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 2 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
BLANK PAGE
Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected21
B. Concurrent Requirements21
C. Reason21
D. Description22
E. Compliance23
F. Approval28
G. Manpower28
H. Weight and Balance Changes29
I. Electrical Load Data29
J. References29
1. Existing Data:29
2. Data Supplied with this Service Bulletin:30
3. Installation Drawings Used in the Preparation of this Service Bulletin:30
K. Publications Affected30
L. Interchangeability and Intermixability of Parts30
M. Software Accomplishment Summary30
2. MATERIAL INFORMATION31
A. Material - Price and Availability31
B. Industry Support Information31
C. Parts Necessary for Each Airplane31
1. Kits/Parts31
2. Parts and Materials Supplied by the Operator31
3. Parts Modified and Reidentified31
4. Parts Removed and Not Replaced31
D. Parts Necessary to Change Spares31
E. Special Tooling - Price and Availability31
F. Special Tooling Necessary to do this Service Bulletin31
3. ACCOMPLISHMENT INSTRUCTIONS33
A. GENERAL INFORMATION33
B. WORK INSTRUCTIONS35
FIGURE 1: LEFT WING UPPER AFT SKIN - WBL 159 TO WBL 220 IN AREAS WITHOUT AN EXTERNAL
REPAIR - INSPECTION [Group 2-3]37
FIGURE 2: LEFT WING UPPER AFT SKIN - WBL 159 TO WBL 220 IN AREAS WITH AN EXTERNAL
REPAIR - INSPECTION [Group 2-3, Configuration 2]40
FIGURE 3: RIGHT WING UPPER AFT SKIN - WBL 159 TO WBL 220 IN AREAS WITHOUT AN EXTERNAL
REPAIR - INSPECTION [Group 2-3]43
FIGURE 4: RIGHT WING UPPER AFT SKIN - WBL 159 TO WBL 220 IN AREAS WITH AN EXTERNAL
REPAIR - INSPECTION [Group 2-3, Configuration 2]46
APPENDIX A: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 1: SURFACE HIGH
FREQUENCY EDDY CURRENT (HFEC) INSPECTION OF THE UPPER AFT SKIN ON THE LEFT AND RIGHT WING FROM WING BUTTOCK LINE (WBL) 159 TO WBL 220 [Group 2]
.49
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 3 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
APPENDIX B: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 2: SURFACE HIGH
FREQUENCY EDDY CURRENT (HFEC), LOW FREQUENCY EDDY CURRENT (LFEC) &
DETAILED INSPECTION OF THE UPPER AFT SKIN AND EXTERNAL REPAIR ON THE LEFT OR RIGHT WING FROM WING BUTTOCK LINE (WBL) 159 TO WBL 220 [Group 2, Configuration
2]51
APPENDIX C: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 3: SURFACE HIGH
FREQUENCY EDDY CURRENT (HFEC) INSPECTION OF THE UPPER AFT SKIN ON THE LEFT AND RIGHT WING FROM WING BUTTOCK LINE (WBL) 159 TO WBL 220 [Group 3]
.53
APPENDIX D: LOGIC DIAGRAM FOR PARAGRAPH 1.E. COMPLIANCE: TABLE 4: SURFACE HIGH
FREQUENCY EDDY CURRENT (HFEC), LOW FREQUENCY EDDY CURRENT (LFEC) &
DETAILED INSPECTION OF THE UPPER AFT SKIN AND EXTERNAL REPAIR ON THE LEFT OR RIGHT WING FROM WING BUTTOCK LINE (WBL) 159 TO WBL 220 [Group 3, Configuration
2]55
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 4 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
Commercial Airplanes 737 Service Bulletin ALERT SummaryNumber: 737-57A1329Original Issue: January 16, 2017 ATA System: 5730 SUBJECT: WINGS - Plates/Skin - Upper Aft Skin at Rear Spar from Wing Buttock Line 159 to 220
- Inspection
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.
CONCURRENT REQUIREMENTS None.
BACKGROUND Accomplishment of this service bulletin will make sure that cracks are found in the upper aft skin (inspar upper skin) of the left and right wing at the rear spar from Wing Buttock Line (WBL) 159 to WBL 220. Undetected cracks in the upper aft skin may lead to the inability of a principal structural element to sustain limit load which could adversely affect the structural integrity of the airplane.
During a visual inspection, a 737-400 operator found a crack in the left upper aft skin originating from a fastener hole common to the upper aft skin and strap aft of the rear spar at WBL 187. The airplane had 49,461 flight hours and 47,718 flight cycles.
A total of 73 cases of the upper aft skin cracks have been reported to Boeing between 1993 and November 2015, of which 24 cases were reported in 2015. The cracks measured from 0.02 inches to 3.0 inches long. The table below contains information about crack lengths, flight cycles and number of cracks found between WBL 170 and WBL 200.
Reported crack data for 737-200/200C/300/400/500 airplanes between 1993 and 2015 Number of cracks foundFlight CyclesCrack Length 2628,000 - 69,000Less than 1 inch 3326,000 - 73,000Between 1 inch and 2 inches 1430,000 - 70,000More than 2 inches Cracks between WBL 159 and WBL 200 were also found during open hole High Frequency Eddy Current (HFEC) inspection as part of the wing rear spar upper chord splice repair in relation to SB 737-57-1318 original issue and SB 737-57A1326 original issue. Most large cracks were reported at WBL 171, 183, 187 and 200 at the end fasteners common to the straps attaching the wing trailing edge to the wing upper aft skin.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 5 of 56
Cracks between WBL 159 and WBL 220 originated from fastener holes common to the upper aft skin and strap aft of the rear spar upper chord. Analysis shows that ground loads introduce a high tension stress in the wing trailing edge skin outboard of the main landing gear beam attachment and high bearing load transfer occurs at the end fasteners of the straps attaching the trailing edge skin to the upper aft skin. This combination of ground loads and bending loads at the skin/strap joint lead to cracks originating from fastener holes which can then lead to fatigue. Failure occurs with the combination of skin and rear spar upper chord cracking. There has been no report of the upper chord cracking to date at this location.
Boeing has determined that the existing inspection programs are not sufficient to find such cracks before they could grow to a critical length.
This service bulletin provides instructions for inspection of the upper aft skin aft of the rear spar for any crack from WBL 159 to WBL 220 to make sure they are found and repaired before they reach a critical length Boeing Service Related Problem (SRP) 737-SRP-57-0302 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 737 FTD 57-15002 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedNoSpares Affected Paragraph 1.E., Compliance and Paragraph
1.F., Approval YesAD Related Paragraph 1.H., Weight and Balance ChangesNoWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed Paragraph 1.K., Publications AffectedNoPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsNoKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator NoOperator Supplied Parts/Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION Group 1:
Boeing endorses the new FAA rules related to Limit of Validity (LOV) and recommends immediate and permanent removal from service of any airplanes upon reaching the LOV, whether or not it is operated under FAA jurisdiction.
As such, Boeing no longer provides maintenance instructions for airplanes that have accumulated flight cycles beyond the LOV. 737 Classic airplanes line numbers 1-291 have accumulated flight cycles beyond the LOV of the maintenance program. 14 CFR 121.1115 and 129.115 prohibit operation of an airplane beyond its LOV.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 6 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
Group 2-3:
Do the work that follows on the left and right wing from Wing Buttock Line (WBL) 159 to WBL 220:
Group 2-3:
1. Deactivate the trailing edge flap system.
2. In areas without an external repair, do a surface High Frequency Eddy Current (HFEC) inspection for any crack in the upper aft skin. If any crack is found contact The Boeing Company for repair instructions and do the repair. Repeat inspections in unrepaired areas. If no crack is found repeat the inspections.
3. In areas with an external repair, do surface HFEC, Low Frequency Eddy Current (LFEC) and detailed inspections for any crack. If any crack is found contact The Boeing Company for repair instructions and do the repair. If no crack is found repeat the inspections.
4. Activate the trailing edge flap system.
EFFECTIVITY All 737-100/200/200C/300/400/500 Airplane(s). Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE The Federal Aviation Administration (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.
Refer to Paragraph 1.E., Compliance.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are not available for the inspection given in this service bulletin.
MANPOWER Refer to Paragraph 1.G., Manpower.
MATERIAL INFORMATION None.
Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 7 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
BOEING SERVICE BULLETIN 737-57A1329
ALERT ALERT
N AREAS WITHOUT AN EXTERNAL REPAIR, DO A
SURFACE HFEC INSPECTION FOR ANY CRACK IN THE UPPER AFT SKIN.
IN AREAS WITH AN EXTERNAL REPAIR, DO
SURFACE HFEC, LFEC AND DETAILED LEFT WING
INSPECTIONS FOR ANY CRACK
IF ANY CRACK IS FOUND, CONTACT THE BOEING
COMPANY FOR REPAIR INSTRUCTIONS AND DO WBL THE REPAIR. REPEAT INSPECTIONS IN 159
UNREPAIRED AREAS IF NO CRACK IS FOUND, REPEAT INSPECTIONS. _S-6 WBL _S-5 187 _ S-4 WBL 200 WBL 220 + - /++ + + (+ ++++ +++ +++++++++ NBD LEFT WING SHOWN, RIGHT WING OPPOSITE 2536190 Original Issue: January 16, 2017 PROPRIETARY - Copyright © Unpublished Export Controlled ECCN: 9E991 - BOEING 737-57A1329 Work - See page 1 for details. 8 of 56
Commercial Airplanes 737 Service Bulletin ALERT Number: 737-57A1329 Original Issue: January 16, 2017 ATA System: 5730 SUBJECT: WINGS - Plates/Skin - Upper Aft Skin at Rear Spar from Wing Buttock Line 159 to 220
- Inspection
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.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is applicable to all 737-100/200/200C/300/400/500 Airplanes, line numbers 1-3132 in 3 Groups. The Variable Numbers and Group Information for the applicable airplanes is given below.
Refer to Service Bulletin Index D6-19567 Part 3 for Airplane Variable Number, Line Number, and Serial Number data.
The term "external repair" is defined as any combination of a repair doubler and repair tripler.
The term "inspection area' is defined as the upper aft skin area of the wing from Wing Buttock Line (WBL) 159 to WBL 220 on the left and right wing on an airplane.
DESCRIPTIONCONFIGURATIONGROUP 737-100/200/200C airplanes, line numbers 1-291-1 737-300/400/500 airplanes, line numbers 1001-3132-2 Airplanes with no external repair in the inspection area1 Airplanes with an external repair in the inspection area2 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 9 of 56
DESCRIPTIONCONFIGURATIONGROUP 737-200/200C airplanes, line numbers 292-1585-3 Airplanes with no external repair in the inspection area1 Airplanes with an external repair in the inspection area2 Airplane Models:
737-100, 737-200, 737-200C, 737-300, 737-400, 737-500 GroupVariable Number 1PA001 - PA022 1PA099 1PA231 - PA232 1PC001 - PC005 1PG001 - PG075 1PG199 1PG201 - PG230 1PG251 - PG255 1PG271 - PG279 1PG301 - PG314 1PG331 - PG332 1PG351 - PG356 1PG375 1PG401 - PG403 1PG431 - PG442 1PG471 - PG475 1PG501 - PG505 1PG571 - PG583 3PG584 - PG586 1PG621 - PG630 1PG651 - PG652 1PG701 - PG705 3PH001 3PH011 - PH013 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 10 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
GroupVariable Number 3PH021 - PH024 1PH701 - PH715 1PH731 - PH732 1PH741 - PH742 3PH743 1PJ001 - PJ002 3PJ003 - PJ009 1PJ031 - PJ032 1PJ071 - PJ072 1PJ101 - PJ104 3PJ105 - PJ119 3PJ201 - PJ219 2PJ301 - PJ302 2PJ551 - PJ561 2PJ601 - PJ615 2PJ811 2PJ816 - PJ817 3PK026 - PK029 3PK041 - PK053 3PK061 - PK070 3PK081 - PK082 3PK091 - PK099 3PK101 - PK103 3PK111 - PK120 3PK141 - PK146 3PK201 - PK204 3PK211 - PK223 3PK231 - PK241 3PK251 - PK258 3PK271 - PK274 3PK281 - PK289 3PK291 3PK301 - PK318 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 11 of 56 BOEING SERVICE BULLETIN 737-57A1329
ALERTALERT
GroupVariable Number 3PK341 3PK351 - PK361 3PK391 3PK431 - PK433 3PK451 - PK452 3PK461 - PK469 3PK495 3PK501 - PK504 3PK511 - PK515 3PK519 3PK521 - PK528 3PK541 - PK565 3PK581 3PK591 - PK599 3PK601 - PK617 3PK621 - PK637 3PK641 - PK642 3PK661 - PK666 3PK671 - PK681 3PK691 - PK697 3PK711 - PK716 3PK731 - PK765 3PK771 - PK779 3PK801 - PK804 3PK819 - PK827 3PK830 3PK861 - PK863 3PK871 - PK874 3PK881 - PK884 3PK901 - PK938 3PK971 - PK974 3PL001 - PL028 3PL061 Export Controlled ECCN: 9E991 - BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: January 16, 2017 737-57A1329 12 of 56 BOEING SERVICE BULLETIN 737-57A1329