- Effective
- September 3, 1966
- Model
- DH.125 Series 1A
- Data sheet
- TCDSA3EU
- Product
- Aircraft · Large airplane
- Amendment
- 39-281
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed January 21, 2026.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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The airworthiness directive
66-22-03 HAWKER SIDDELEY: Amdt. 39-281 Part 39 Federal Register September 3, 1966. Applies to Model DH.125-1A Airplanes Equipped With Aileron and Elevator Systems Gust Lock, P/N 25CF-1793AB.
Compliance required within the next 300 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent operation with the elevator and aileron gust lock engaged, accomplish the following:
(a) Remove gust lock assembly, P/N 25CF-1793AB, located on left side of cockpit.
(b) Modify pilot's control wheel and seat rail, and install gust lock stowage box assembly, P/N 25.MM. 333, in accordance with Hawker Siddeley Aviation Ltd. Service Bulletin No. 27-34-(1716), dated May 18, 1966, or later ARB-approved issue.
(c) Equip airplane with aileron and elevator gust lock assembly P/N 25.MM. 2583. This directive effective September 3, 1966.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.