Messier-Dowty Ltd

Service Bulletin No.146-32-157 Page 1 of 6 CAGE: K0654 Cheltenham Road, Gloucester, GL2 9QH, England Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821 

# SERVICE BULLETIN

LANDING GEAR - MAIN LANDING GEAR - INSPECTION OF THE SHOCK ABSORBER LOWER ATTACHMENT PIN

1. Planning Information A. Effectivity Aircraft affected: BAe 146 All Series AVRO 146 RJ All Series Unit affected: Main Landing Gear Part/Type Nos.: 200671001, 200671002, 200671003, 200671004 200877001, 200877002 201107001, 201107002, 201107003, 201107004 201298001, 201298002 201423001, 201423002 B. Concurrent Requirements (1) None. C. Reason (1) Instances of corrosion to the outer diameter of the lower attachment pin for the shock absorber have occurred in service. (2) Excessive corrosion could lead to pin fracture. D. Description (1) This Service Bulletin tells operators to perform a visual inspection of the pin that attaches the shock absorber to the wheel lever and axle sub-assembly. E. Compliance (1) Refer to BAE SYSTEMS Service Bulletin 32-176. F. Approval (1) The technical content of this Service Bulletin has been approved on behalf of BAE SYSTEMS (Ref. DO.21014) under the authority of EASA Approval No. EASA.21J.047. G. Manpower (1) Messier-Dowty Limited estimate that it will take two manhours per main landing gear to do this Service Bulletin. H. Weight and Balance (1) None.

Feb 12/2009Messier-Dowty Ltd

Service Bulletin No.146-32-157 Page 2 

# SERVICE BULLETIN

I. References (1) Aircraft Maintenance Manual. (2) Messier-Dowty Limited Component Maintenance Manual 32-10-34. (3) Messier-Dowty Limited Component Maintenance Manual 32-10-64. (4) Messier-Dowty Limited Component Maintenance Manual 32-10-72. (5) Messier-Dowty Standard Practices Manual 20-00-10. (6) BAE SYSTEMS Service Bulletin 32-176. J. Other Publications Affected (1) None.
2. Material Information
A. Material (1) None. B. Material Necessary For Each Unit (1) None. C. Tooling (1) None.
3. Accomplishment Instructions The figure/item numbers in parentheses in the te xt agree with those that are in the illustrated parts list. Only the primary figure/item numbers are used. The Process Specifications (M-DLPS) are in the Standard Practices Manual. A. Procedure (Refer to Figure 1) (1) Jack the aircraft and gain access to the shock absorber lower attachment pin 200877682, 201107608 or 201107615: refer to the Aircraft Maintenance Manual. (2) Remove the pin from the main landing gear: refer to the Aircraft Maintenance Manual. (3) Examine the outer diameter of the pin for signs of corrosion or damage to the chromium plating. (4) If the chromium plating on the outer diameter of the pin shows any sign of corrosion the pin must be rejected. (5) If the chromium plating on the outer diam eter of the pin is cracked or the base material is exposed the pin must be rejected. (6) If the chromium plating on the outer diam eter of the pin shows signs of smooth wear and is within the wear limits specified in the Component Maintenance Manual, the pin can be re-installed. (7) If the pin is rejected, install a new one: refer to the Aircraft Maintenance Manual. Return rejected pins to Messier-Dowty Limited for the attention of the EQA Laboratory at the address shown at the top of page one.

Feb 12/2009Messier-Dowty Ltd

Service Bulletin No. 146-32-157 Page 3 

# SERVICE BULLETIN

(8) Send Messier-Dowty Limited the followi ng details without delay, use the form provided in Appendix A: - the findings of the inspection - main landing gear part number - main landing gear serial number - pin part number - pin serial number - pin CSN - landings since pin installation - landings since pin overhaul (if applicable). B. Identification NOTE: When it is necessary to replace the identification nameplate identify the replacement nameplate with all the applicable data: refer to PCS-6000 Method 05. (1) Mark the Service Bulletin number 146-32-157 on the main landing gear nameplate: refer to PCS-6000 Method 05. (2) Write the Service Bulletin number 146-32-157 in the applicable aircraft and landing gear records.

Feb 12/2009Messier-Dowty Ltd

Service Bulletin No.146-32-157 Page 4 

# SERVICE BULLETIN

Main Landing Gear Figure 1 PIN (SHOCK ABSORBER LOWER ATTACHMENT) 200877682 201107608 201107615

PART SECTION VIEW AT 

## A

B146A1898-1 

## A

Feb 12/2009Messier-Dowty Ltd

Service Bulletin No. 146-32-157 Page 5 

# SERVICE BULLETIN

4. Messier-Dowty and Messier Services Contacts A. Refer to the Messier-Dowty website ( messier-dowty.com ) for the latest list of contact names, addresses and numbers. Original Equipment Manufacturers
Messier-Dowty Inc. 574 Monarch Avenue Ajax, Ontario L1S 2G8 CANADA Tel : 905-683-3100 Fax : 905-683-6936 Messier-Dowty Limited Cheltenham Road Gloucester GL2 9QH ENGLAND Tel : +44(0)1452 712424 Fax : +44(0)1452 713821 Messier-Dowty SA Zone Aeronautique L. Breguet BP10 78142 Velizy Cedex FRANCE Tel : +33 146 29 18 00 Fax : +33 146 29 8770 Technical Assistance and Spares Support Centers (TASSC) For AOG (commercial and technical): aogtassc@messier-dowty.com

For Europe customers: eametassc@messier-dowty.com Tel: +33 1 5521 2590

For Americas customers: americatassc@messier-dowty.com Tel: +1 404 305 2626

For Asia-Pacific customers: asiatassc@messier-dowty.com Tel: +65 6245 5688 Repair and Overhaul Facilities Messier Services R&O Facility 574 Monarch Avenue Ajax, Ontario L1S 2G8 CANADA Tel : 905-683-3100 Fax : 905-683-0378 Messier Services R&O Facility Meteor Business Park Cheltenham Road Gloucester GL2 9QL ENGLAND Tel : +44(0)1452 713111 Fax : +44(0)1452 716500 Messier Services R&O Facility 3, rue Antoine de St Exupery, BP110 67124 Molsheim Cedex France Tel : (33) 38838 9200 Fax : (33) 38838 9399 Messier Services (Asia) Pte. Ltd. R&O Facility 21 Loyang Crescent, Loyang Industrial Estate SINGAPORE 508985 Tel : (65) 6545 9455 Fax : (65) 6542 3936 Messier Services R&O Facility - Americas Av. La Noria Parque Industrial Querétaro Carretera QRO-SLP, Km. 28.5 Querétaro, QRO 76220 MEXICO Tel : +52 (442) 19 25 800 Fax :+52 (442) 19 25 801 HYDREP Aéroport de Dinard-Pleurtuit-Saint-Malo Bâtiment 20 BP90154 35801 DINARD Cedex FRANCE Tel : (33) 2 99 82 79 79 Fax : (33) 2 99 82 79 97

Feb 12/2009Messier-Dowty Ltd

INTENTIONALLY BLANK

Service Bulletin No.146-32-157 Page 6 

# SERVICE BULLETINMessier-Dowty Ltd

Service Bulletin No.146-32-157 Page 1 of 2 CAGE: K0654 Cheltenham Road, Gloucester, GL2 9QH, England Telephone: +44 (0) 1452 712424 Fax: +44 (0) 1452 713821 

# SERVICE BULLETIN

APPENDIX A
INSPECTION OF BAE 146/AVRO RJ MAIN LANDING GEAR SHOCK ABSORBER LOWER ATTACHMENT PIN Return this form to the address shown at the top of the page (or by fax to +44 (0) 1452 711245), marked for the attention of the Commuter IPT Technical Manager.

YOU MAY PHOTOCOPY THIS FORM OPERATOR NAME:

INSPECTION FINDINGS:

MAIN LANDING GEAR PART NO.:

MAIN LANDING GEAR SERIAL NO.:

PIN PART NO.:

PIN SERIAL No.:

PIN CSN:

LANDINGS SINCE PIN INSTALLATION:

LANDINGS SINCE PIN OVERHAUL (if applicable):

Feb 12/2009Messier-Dowty Ltd

INTENTIONALLY BLANK

Service Bulletin No.146-32-157 Page 2 

# SERVICE BULLETIN