BAE SYSTEMS (Operations) Limited, Prestwick InternationaL Airport, Ayrshire, KA9 2RW, ScotLand. INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

TITLE: LANDING GEAR -fIILG
- INSPECTION OF THE SHOCK ABSORBER LOWER

ATTACHMENT PIN. 1.Planning information A.Effectivity (1) Aircraft Aircraft affected by this inspection are defined below All BAe 146 100, 200, 300 Series All AVRO 146-RJ70, RJ85, RJ100 Series Check the aircraft technicaL records for accomplishment of this inspection before actioning this Inspection Service Bulletin. B.Reason Degradation of the chromiu~ plating on the outer diameter of the shock absorber lower attachment pin has occurred inservice. Excessive corrosion of the unprotected steel could lead topin fracture. C.Description The main landing gear (MlG) shock absorber is removed and lower attachment pin is inspected for corrosion. Work comprises:- -Jack aircraft. -Remove the MLG shock absorber. -Do Messier Dowty Ltd. Service BulLetin 146-32-157. -InstaLL aserviceabLe MLG shock absorber. -Test. -Close up. -Remove aircraft jacks. D.Compliance The technical content of this service bulletin is the subject of EASA AIRWORTHINESS DIRECTIVE consultation. InitiaL inspection to beaccompLished within 4000 landings or 2 years, whichever is the sooner from the initial issue date of this inspection service bulletin.

Date: 12-NOV-2009 Revision: InitiaL issue Printed in England 158.32-176 Page 1of12

## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
Repeat inspections to be accompLished every 8000 Landings or 4 

### years, whichever ;s the sooner after the initiaL inspection. Accomplish this inspection service buLLetin ateach overhauL of the MLG unit. E.Approval The technical information contained inthis document has been approved under the authority of EASA Part 21 Approval No. EASA.21J.047. F.Manpower (1) 3man-hours per aircraft (instalL/remove aircraft jacks and test) . (2) Refer toMessier-Oowty Ltd. Service Bulletin 146-32-157 for the man-hours to inspect the MLG shock absorber lower pin. 

### G.MateriaLs
-cost and availability Refer toMessier-Dowty Ltd. Service BuLLetin 146-32-157. H.TooLing
- cost and availability Refer toMessier-Dowty Ltd. Service BuLLetin 146-32-157. I.Weight and baLance No Effect. J.References Aircraft Maintenance ManuaL AMM 07-00-00, AMM Chapter 32-10-14 and AMM Chapter 32-30-00, page block 501. Refer toMessier-Dowty Ltd. Service BuLLetin 146-32-157 at Latest issue. K.Publications affected Refer toMessier-Dowty Ltd. Service BulLetin 146-32-157. NOTE: The Maintenance Review Board Report and Maintenance PLanning Document will be reviewed, for apossibLe inclusion of a scheduled task.

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
L.ElectricaL load data Not applicable. M.Software Accomplishment Summary Not applicabLe. ".Aircraft Noise LeveLs Not applicable.



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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT 2.Accomplishment instructions A.Genera l 

### WARNING: WHENEVER ANY PART OF THEMAIN ORASSOCIATED SYSTEM IS

DiSMANTLED, ADJUSTED, REPAIRED OR RENEWED, THAT PART OF 

### THE SYSTEM WHICH HAS BEEN DISTURBED SHALL BE SUBJECTED TO ASECOND INDEPENDANT INSPECTION fORSECURITY OF lOCKING DEVICES, fULL AND FREE MOVENENT, DIRECTION AND TENSiON CHECKS. THIS WORK MUST BE DONE INACCORDANCE WITH THE ACCEPTABLE MEANS Of COMPLIANCE M.A. 402 (a) TO EASA PART H, OR TOAN EQUIVALENT NATIONAL STANDARD. (1) The following abbreviations are used within this document AMM -Aircraft Maintenance Manual (2) Observe alL WARNINGS and CAUTIONS appearing in the Aircraft Maintenance Manual (AMM) referred to inthis Service Bulletin. B.Preparation (1) Refer toAMH 07-00-00. Jack the aircraft. C.Inspection (1) Refer toAMM Chapter 32-10-14. Remove the MLG shock absorber. (2) DoMessier Dowty Ltd. S6 146-32-157. (3) Refer toAMM Chapter 32-10-14. Install aserviceable MLG shock absorber lower attachment pin. (4) Refer toAMM Chapter 32-10-14. Install aserviceable MLG shock absorber. D.Test (1) Refer toAMM Chapter 32-30-00, page block 501. Do an operational test of the landing gear. Perform aminimum of 5 extension/retention cycles. LClose up (1) Make certain work area is clean, and clear of tools and miscellaneous equipment. (2) Refer toAMM 07-00-00. Remove aircraft jacks.

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
F.Documentation (1) Complete acopy of Inspectlon Report attached to this Inspection Service Bulletin and return by fax or ~aiL_ 

### OR Return all required Inspection Report details via e-mail.

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT
3.Material information Refer toMessier Dowty Ltd. SB146-32-157.

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT



## APPENDIX 1 1.INSPECTION REPORT A.Complete and return this form as detaiLed OPERATOR: AIRCRAFT REGISTRATION: CONSTRUCTORS NUMBER: FLIGHT HOURS: lANDIM6S: 

### DATEINSPECTION PERFORMED: FINDINGS:

To: Customer Liaison,

CustouerSupport (BuiLding 37), BAESYSTEMS (Operations) limited, Prestw;ck International Airport, Ayrshire, KA9 2RW, Scotland. Fax t44(0) 1292 675432 e-maiL raengLiaison@baesystems.com

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT

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## BAE SYSTEMS INSPECTION SERVICE BULLETIN BAe 146 SERIES/AVRO 146-RJ SERIES AIRCRAFT



## APPENDIX 2 1.CONTINUED AIRWORTHINESS INSTRUCTIONS (1) There are no continued airworthiness instructions appLicabLe to this inspection service bulletin. A.Scheduled Maintenance (1) Not applicable. B.Re~oval Procedures (1) Not applicable. (.Installation Procedures el) Not applicable. D.Test Procedures (1) Not applicable. E.Troubleshooting (1) Not appLicable.

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