69-03-04 SLINGSBY: Amdt. 39-721. Applies to Slingsby Model T.53B Gliders.
Compliance required within the next 25 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent interference between the elevator control lever and its support bracket, replace the existing bracket P/N 53B-10-81 with new bracket P/N 53B-10-1117 in accordance with Slingsby Technical Instruction No. 36, dated November 1968, or later ARB-approved issued or an FAA approved equivalent.
This amendment becomes effective February 14, 1969.