# AD 83-03-05: Undercarriage Shock Absorber

- Type: Airworthiness directive
- Status: Current
- Products: B-N Group BN2A MK. III, BN2A MK. III-2 and BN2A MK. III-3
- Effective: February 22, 1983
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-4565
- Registered aircraft: 3 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/53C67E4BA36094F6862569BA004C012C.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-03-05

## The airworthiness directive

83-03-05 BRITTEN-NORMAN LTD: Amendment 39-4565. Applies to Model BN-2A MK III Trislander (all serial numbers) airplanes certificated in any category.

COMPLIANCE: Required as indicated, unless already accomplished.

To prevent the main undercarriage shock absorber support ring from separating from the inside of the undercarriage extension tube, accomplish the following:

a) Within the next 50 landings on airplanes which have accumulated 3,000 landings or more on the effective date of this AD, or prior to the accumulation of 3,050 landings on airplanes that have less than 3,000 landings on the effective date of this AD, and thereafter at intervals not to exceed 1,000 landings:

1) Visually inspect the rivets retaining the main undercarriage shock absorber internal support ring to the main undercarriage leg extension tube in accordance with Steps 1 through 4 of the "Inspection" Section of Britten-Norman Service Bulletin BN-2/SB.139, Issue 1, dated January 29, 1980 (hereinafter referred to as the Service Bulletin).

2) If one or more loose rivets are found during the above inspection, before further flight, replace all three rivets in accordance with Steps 1 through 3 of the "Rectification" Section of the Service Bulletin.

b) Within the next 50 landings on airplanes which have accumulated 15,000 landings or more on the effective date of this AD or prior to the accumulation of 15,050 landings on airplanes which have less than 15,000 landings on the effective date of this AD, replace all three rivets in accordance with Steps 1 through 3 of the "Rectification" Section of the Service Bulletin.

c) In the event that landings have not been recorded, 1,000 hours time-in-service may be used in place of 3,000 landings for purposes of complying with this AD.

d) The airplane may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.

e) An equivalent means of compliance with this AD may be used if approved by the Manager, Aircraft Certification Staff, AEU-100, Europe, Africa, and Middle East Office, FAA, c/o American Embassy, Brussels, Belgium.

This amendment becomes effective on February 22, 1983.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A29EU](https://openairdocs.org/tcds/A29EU): Britten-Norman Aerospace Ltd.; names 3 of 3 models: BN2A MK. III, BN2A MK. III-2, BN2A MK. III-3

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 3 (3 by airframe model, 0 by engine model)
- Makers: Britten Norman 3

Models with the most aircraft:

- [Britten Norman BN-2A MK III](https://openairdocs.org/model/britten-norman-bn-2a-mk-iii): 2 aircraft (airframe model)
- [Britten Norman BN 2A MKIII 2](https://openairdocs.org/model/britten-norman-bn-2a-mkiii-2): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/83-03-05/models.md
Every aircraft: https://openairdocs.org/ad/83-03-05/aircraft.md

Its text cites no advisory circulars or STCs.

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