# AD 83-26-04: Lock Levers Replacement

- Type: Airworthiness directive
- Status: Current
- Products: BAE Systems HS 748 Series 2A and HS 748 Series 2B
- Effective: January 11, 1984
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Amendment: 39-4791
- Registered aircraft: 2 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3896A12C427CE65D862569EB005D07B0.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/83-26-04

## The airworthiness directive

83-26-04 BRITISH AEROSPACE: Amendment 39-4791. Applies to all Model HS 748 2A and 2B series airplanes certificated in all categories. Compliance is required as indicated. To prevent the gust locks of the control surfaces from re-engaging during flight, accomplish the following within the next 60 days after the effective date of this AD, unless previously accomplished:

A. Replace the existing elevator, rudder and aileron lock levers with new parts in accordance with the Accomplishment Instructions of British Aerospace HS 748 Service Bulletin 27/88, Revision 2, dated April 22, 1983.

B. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

This amendment becomes effective January 11, 1984.

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS A24EU](https://openairdocs.org/tcds/A24EU): BAE Systems (Operations) Limited; names 2 of 2 models: HS 748 Series 2B, HS 748 Series 2A

## 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: 2 (2 by airframe model, 0 by engine model)
- Makers: British Aerospace 2

Models with the most aircraft:

- [British Aerospace HS-748-2A](https://openairdocs.org/model/british-aerospace-hs-748-2a): 2 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/83-26-04/models.md
Every aircraft: https://openairdocs.org/ad/83-26-04/aircraft.md

Its text cites no advisory circulars or STCs.

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