# AD 70-06-05: Elevator Trim System Drive

- Type: Airworthiness directive
- Status: Current
- Products: B-N Group BN-2, BN-2A, BN-2A-2, BN-2A-20, BN-2A-21, BN-2A-26, BN-2A-27, BN-2A-3, BN-2A-6, BN-2A-8, BN-2A-9, BN2A MK. III and 2 more
- Effective: March 17, 1970
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Small airplane
- Amendment: 39-956
- Registered aircraft: 52 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E1053786A7A7F9D286256A45007072EF.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/70-06-05

## The airworthiness directive

70-06-05 BRITTEN-NORMAN, LTD: Amdt. 39-956. Applies to BN-2 and BN-2A airplanes. To prevent failure of the elevator trim system final drive lever attachment lugs, accomplish the following: (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 25 hours' time in service since the last inspection until the modifications of paragraph (b) have been accomplished, visually inspect the elevator trim system final drive lever (P/N NB-45-D-1823) for cracks in accordance with Britten-Norman Service Bulletin No. BN-2/SB.24 dated January 8, 1969, or later ARB-approved issue or an FAA-approved equivalent. (b) If cracks are found on the drive lever during the inspections required by paragraph (a), before further flight replace the affected lever (P/N NB-45-D-1823) with a new lever (P/N NB-45-D-2165) by incorporating Modification NB/M/394 in accordance with Britten- Norman Service Bulletin BN-2/SB.24 dated January 8, 1969, or later ARB-approved issue or an FAA-approved equivalent. (c) The repetitive inspections required by paragraph (a) may be discontinued after compliance with paragraph (b) has been accomplished. This amendment becomes effective March 17, 1970.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A17EU](https://openairdocs.org/tcds/A17EU): Britten-Norman Aerospace Ltd.; names 11 of 18 models: BN-2A-2, BN-2A-9, BN-2A-26, BN-2A-27, BN-2A-3, BN-2A-8, BN-2A-20, BN-2A-21…
- [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: 52 (52 by airframe model, 0 by engine model)
- Makers: Britten-Norman 47, Britten Norman 3, B-N Group 1, Pilatus Britten-Norman 1

Models with the most aircraft:

- [Britten-Norman BN2A-26 ISLANDER](https://openairdocs.org/model/britten-norman-bn2a-26-islander): 14 aircraft (airframe model)
- [Britten-Norman BN-2A](https://openairdocs.org/model/britten-norman-bn-2a): 8 aircraft (airframe model)
- [Britten-Norman BN-2A-8](https://openairdocs.org/model/britten-norman-bn-2a-8): 8 aircraft (airframe model)
- [Britten-Norman BN-2A-27](https://openairdocs.org/model/britten-norman-bn-2a-27): 5 aircraft (airframe model)
- [Britten-Norman BN-2A-9](https://openairdocs.org/model/britten-norman-bn-2a-9): 4 aircraft (airframe model)
- [Britten-Norman BN-2A-20](https://openairdocs.org/model/britten-norman-bn-2a-20): 3 aircraft (airframe model)
- [Britten Norman BN-2A MK III](https://openairdocs.org/model/britten-norman-bn-2a-mk-iii): 2 aircraft (airframe model)
- [Britten-Norman BN-2A-21](https://openairdocs.org/model/britten-norman-bn-2a-21): 2 aircraft (airframe model)
- [Britten-Norman BN-2 ISLANDER](https://openairdocs.org/model/britten-norman-bn-2-islander): 1 aircraft (airframe model)
- [Britten-Norman BN-2A-6](https://openairdocs.org/model/britten-norman-bn-2a-6): 1 aircraft (airframe model)
- [Britten Norman BN 2A MKIII 2](https://openairdocs.org/model/britten-norman-bn-2a-mkiii-2): 1 aircraft (airframe model)
- [B-N Group BN-2A-26](https://openairdocs.org/model/b-n-group-bn-2a-26): 1 aircraft (airframe model)
- [Britten-Norman BN-2A-26](https://openairdocs.org/model/britten-norman-bn-2a-26): 1 aircraft (airframe model)
- [Pilatus Britten-Norman BN-2A-26](https://openairdocs.org/model/pilatus-britten-norman-bn-2a-26): 1 aircraft (airframe model)

All 14 models: https://openairdocs.org/ad/70-06-05/models.md
Every aircraft: https://openairdocs.org/ad/70-06-05/aircraft.md

Its text cites no advisory circulars or STCs.

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