Text
From the PDF’s text layer: layout, tables and figures are lost. The PDF is the document.
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 = '55e64ee5af3cbff3672e127b0ab6e395861d7165be4025ec750aebf6221d7901' 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 = '55e64ee5af3cbff3672e127b0ab6e395861d7165be4025ec750aebf6221d7901' 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.
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 1 of 30
ALERT ALERT Commercial Airplane Group 737
ALERTALERT Service Bulletin Number: 737-27A1287 Date: April 16, 2008 ATA System: 2721 SUBJECT: FLIGHT CONTROLS - Rudder Feel and Centering Unit - Inspection and Replacement of Spring Assembly
BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2008 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter.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, 707, 717, 727, 737, 747, 757, 767, 777, BBJ, BOEING BUSINESS JET, DC-8, DC-9, DC-10, MD-10, MD-11, MD-80, MD-90, the Boeing logo and the Boeing livery are among the trademarks owned by Boeing or its subsidiaries. No intellectual property license (express or implied) is granted in connection with this document or otherwise.
BLANK PAGE April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 2 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
BLANK PAGE
Table of Contents April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 3 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
Table of Contents Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1. PLANNING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 A. Effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1. Airplanes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2. Spares Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 B. Concurrent Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 C. Reason . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 D. Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 E. Compliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 F. Approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 G. Manpower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 H. Weight and Balance Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 I. Electrical Load Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 J. References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1. Existing Data: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2. Data supplied with this Service Bulletin: . . . . . . . . . . . . . . . . . . . . . . . . . 18
3. Installation Drawings Used in the Preparation of this Service Bulletin: . . . . . . . . . . 18 K. Publications Affected . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 L. Interchangeability and Intermixability of Parts . . . . . . . . . . . . . . . . . . . . . . . . . 18
2. MATERIAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 A. Material - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 B. Industry Support Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 C. Parts Necessary For Each Airplane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
1. Kits/Parts: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
2. Parts and Materials Supplied by the Operator: . . . . . . . . . . . . . . . . . . . . . . 20
3. Parts Modified and Reidentified: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4. Parts Removed and Not Replaced: . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 D. Parts Necessary to Change Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 E. Special Tooling - Price and Availability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 F. Special Tooling Necessary to do this Service Bulletin . . . . . . . . . . . . . . . . . . . . . 20
3. ACCOMPLISHMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 A. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 B. WORK INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 FIGURE 1: Inspection of the Inner Spring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 FIGURE 2: Replacement of Rudder Feel and Centering Unit Spring Assembly. . . . . . . . . . . . . 27 APPENDIX A: DATA SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Table of Contents April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 4 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
BLANK PAGE
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 5 of 30
ALERT ALERT Commercial Airplane Group 737
ALERTALERT Service Bulletin Number: 737-27A1287 Summary Date: April 16, 2008 ATA System: 2721 SUBJECT: FLIGHT CONTROLS - Rudder Feel and Centering Unit - Inspection and Replacement of Spring Assembly
THIS BULLETIN 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 SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None
BACKGROUND This service bulletin gives instructions to test the Rudder Feel and Centering Unit, or as an alternative to inspect the Rudder Feel and Centering Unit Inner Spring. This service bulletin has two parts. Part I describes recommended interim testing and inspection procedures. Part II provides instructions to replace the spring assembly and test the Rudder Feel and Centering Unit prior to returning the aircraft to service.
The Rudder Feel and Centering Unit gives artificial feel to the rudder pedals, centers the input to the PCU, and transmits trim inputs to the aft control components. When the rudder pedals move, the rudder feel and centering unit springs provide feel force to the pilot.
There are two springs that are attached to the rudder feel and centering unit, one inside the other, in a dual load path configuration. If one of these springs break, the rudder feel force decreases. If the second spring should also break, there would be very little artificial feel to the rudder pedals. This increases the susceptibility to Pilot Induced Oscillation and continued safe flight and landing of the airplane could be compromised.
Boeing has received reports of low rudder pedal forces that were caused by broken inner springs in the rudder feel and centering unit. Boeing investigation of the removed parts found the root cause of the spring failure to be the result of a material defect within the raw material of the wire stock. Boeing has isolated the rudder feel and centering units that could be affected, based upon one batch of raw material. Based upon this information, Boeing has determined which airplanes could have discrepant springs installed.
Boeing Service Related Problem (SRP) 737NG-SRP-27-0201 is related to this service bulletin. Boeing Service Request 1-680006998 also gives data about the broken inner spring on the rudder feel and centering unit.
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 6 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
ACTION At the times given in Paragraph 1.E, do the Rudder Pedal Forces Test given in Accomplishment Instructions PART I, with a minimum acceptance threshold of 60 pounds force. Alternatively, make an inspection of the rudder feel and centering unit spring, located in the vertical stabilizer. Repeat the test, or the inspection, at the intervals given in Paragraph 1.E., Compliance. Terminating action for the test and the inspection is the replacement of the rudder feel and centering unit spring assembly, located in the vertical stabilizer. Replace the two springs as a complete assembly. Before returning the airplane to service, do the Rudder Pedal Forces Test again as given in 737-600/700/800/900 AMM 27-21-00 to make sure the feel force is more than 60 pounds, and perform a Rudder Travel Test as given in 737-600/700/800/900 AMM 27-21-00. Boeing requests that the airplane identification and the serial numbers of the Rudder Feel and Centering Unit replaced be provided on the form given in Appendix A, or on a similar form.
NOTE: No action is necessary on airplanes on which the Rudder Feel and Centering Unit Inner Spring has been found broken and replaced with a new spring part number 69-57900-6 before the release of this service bulletin.
EFFECTIVITY All 737-600, -700, -700C, -800 and -900 airplane line numbers 1490 thru 1735, with some exceptions, plus airplane line numbers 2157. See Paragraph 1.A., Effectivity.
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.
See Service Bulletin Paragraph 1.E. for compliance information.
INDUSTRY SUPPORT INFORMATION Boeing warranty remedies are available for airplanes in warranty as of November 8, 2007. Please refer to Paragraph 2.B., Industry Support Information.
.
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 7 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
MANPOWER
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
Airplanes Total Task Hours Elapsed Hours Part I, Method I - Rudder Pedal Forces Test
0.50
0.25 Part I, Method II - Rudder Feel and Centering Unit Inner Spring Detail Inspection
3.25
3.25 Part II - Replacement of the Spring Assembly on Rudder Feel and Centering Unit
6.50
6.25
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 8 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
OF SPRING ASSEMBLY
IS THE REPLACEMENT
TERMINATING ACTION SPRING INNER
PEDAL FORCE
DO A TEST OF THE RUDDER
RUDDER PEDAL FORCES TEST,
INNER SPRING OF THE SPRING
ASSEMBLY ON THE RUDDER
FEEL AND CENTERING UNIT
MAKE AN INSPECTION OF THE
AS AN ALTERNATE TO THE FWD A ASEE 1497511
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 9 of 30
ALERT ALERT Commercial Airplane Group 737
ALERTALERT Service Bulletin Number: 737-27A1287 Date: April 16, 2008 ATA System: 2721 SUBJECT: FLIGHT CONTROLS - Rudder Feel and Centering Unit - Inspection and Replacement of Spring Assembly
THIS BULLETIN 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 SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes This service bulletin is for the airplanes shown below.
Airplane models:
737-700 737-700C 737-800 737-900
IDENTIFICATION BY CUSTOMER, CUSTOMER CODE, GROUP AND VARIABLE NUMBER
AEROMEXICO (AMX) 1 YB858–YB859 YB861–YB862
AIR BERLIN (BER) 1 YB911 YD158–YD159
AIR CHINA (BEJ) 1 YB584–YB585
AIR EUROPA (ARE) 1 YK362–YK365 YK601
GROUP CONFIGURATION DESCRIPTION 1 - 737 600/700/800/900 airplanes line number 1490 through 1735, with some exceptions, plus airplane line number 2157.
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 10 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
AIR INDIA EXPRESS (IDC) 1 YJ942–YJ943 YK007
AIR NIPPON (ANK) 1Y G 2 5 1
AIR SAHARA (SAQ) 1 YM102–YM103
AIRTRAN AIRWAYS (CQT) 1 YB371 YB376–YB381 YM201–YM203
ALASKA AIRLINES (ASA) 1 YK403 YK431
ALOHA AIRLINES (ALO) 1 YB656
AUSTRIAN AIRLINES AG (AUL) 1 YC385–YC386
CHINA EASTERN AIRLINES (CEA) 1 YB571–YB574 YB576–YB577 YK457–YK459
CHINA EASTERN AIRLINES WUHAN (WUH) 1 YK456 YK460
CHINA SOUTHERN AIRLINES (GUN) 1 YB886–YB888
CHINA XINJIANG AIRLINES (XIJ) 1 YB884–YB885
CONTINENTAL AIRLINES (CAL) 1 YJ540 YJ542–YJ545
COPA AIRLINES (COP) 1 YA974–YA976 YJ593–YJ594
EASYJET (EZY) 1 YB132
ETHIOPIAN AIRLINES (ETH) 1 YB157 FLYGLOBESPAN.COM (FGS) 1 YJ941 YK136–YK137
FUTURA (FUA) 1 YJ012–YJ013 YK426
GOL AIRLINES (GOT) 1 YA631
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 11 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
HAINAN AIRLINES (HNA) 1Y K 4 0 2
JET AIRWAYS (JPL) 1 YD334 YK401 YK404
KOREAN AIR (KAL) 1 YD591–YD595
LUXAIR (LUX) 1Y B 9 0 3
MALEV HUNGARIAN AIRLINES (HGA) 1 YA374–YA377 YC203 YC207
OKAY AIRWAYS COMPANY LIMITED (OKY) 1 YD333
OMAN AIR (OMR) 1Y J 9 0 2
PACIFIC BLUE AIRLINES (BLP) 1Y K 3 2 4
QANTAS (QAN) 1 YJ917–YJ922
ROYAL AIR MAROC (RAM) 1 YK303–YK304
RYANAIR (RYR) 1 YJ823–YJ826 YJ828 YJ830 YJ833–YJ853
SAS (SAS) 1 YD057
SHANDONG AIRLINES (SHG) 1Y K 5 1 1
SHANGHAI AIRLINES (SHA) 1 YC170 YD491
SHENZHEN AIRLINES (SHZ) 1 YD651
SOUTHWEST AIRLINES (SWA) 1 YA155–YA158 YA160–YA169 YA171–YA175 YA177–YA183 YA187 YA189–YA199 YM251–YM264
STERLING AIRLINES A/S (STR) 1Y J 9 3 4
April 16, 2008 737-27A1287 BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details. 12 of 30 BOEING SERVICE BULLETIN 737-27A1287
ALERT ALERT
SUN COUNTRY AIRLINES (SCA) 1 YJ936 YK132
TRANSAVIA AIRLINES (TAV) 1 YB526
TRAVEL SERVICE (TSF) 1 YK405
TURKEY AIR FORCE AEW&C PGM (ZXN) 1Y G 2 1 1
UNITED STATES NAVY (USN) 1Y G 5 0 8
VIRGIN BLUE AIRLINES (VOZ) 1 YK325 YK327–YK330
WESTJET (WJI) 1 YB619–YB622 YB624–YB629 YK480–YK482 YK484
XIAMEN AIRLINES (XIA) 1 YM471 YM481–YM482
IDENTIFICATION BY VARIABLE NUMBER Variable Group YA155–YA158 1 YA160–YA169 1 YA171–YA175 1 YA177–YA183 1 YA187 1 YA189–YA199 1 YA374–YA377 1 YA631 1 YA974–YA976 1 YB132 1 YB157 1 YB371 1 YB376–YB381 1 YB526 1 YB571–YB574 1 YB576–YB577 1 YB584–YB585 1 YB619–YB622 1 YB624–YB629 1