- Effective
- August 18, 1975
- Model
- T.59.D Kestrel
- Data sheet
- TCDSG27EU
- Product
- Aircraft · Glider
- Amendment
- 39-2314
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 May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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On this page
The airworthiness directive
75-17-12 SLINGSBY SAILPLANES: Amendment 39-2314. Applies to Slingsby T59D Kestrel gliders certificated in all categories.
Compliance is required as indicated, unless already accomplished.
To prevent dive brake retraction failure, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD, install a placard on the instrument panel in full view of the pilot reading:
"AIR BRAKE EXTENSION LIMITATION FINAL APPROACH 50% FLAREOUT ON LANDING 100% CRUISE NONE (0%)"
(b) Within the next 50 hours' time in service after the effective date of this AD, replace the dive brake control mechanism with the linear type dive brake control mechanism, P/N 59A-45-717, in accordance with Slingsby Sailplanes Technical Instruction No. 75 dated May 21, 1975, or an FAA approved equivalent.
(c) The placard required by paragraph (a) of this AD may be removed after the work specified in paragraph (b) of this AD has been accomplished.
This amendment becomes effective August 18, 1975.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.