75-23-01 SCHEIBE FLUGZEUGBAU GmbH: Amendment 39-2412. Applies to SF 27A gliders, serial numbers 6001 to 6105 inclusive, certificated in all categories.
Compliance is required as indicated, unless already accomplished.
To prevent failure of the welded area of the elevator actuating lever of the elevator driveshaft, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD, inspect the welded area of the elevator actuating lever of the elevator drive shaft for cracks in accordance with No. 1 of the Action paragraph of Scheibe Flugzeugbau Technical Note No. 257- 1/74, translation dated 26 June, 1975, or an FAA-approved equivalent.
(b) If cracks are found, before further flight, repair the weld and modify the elevator drive shaft by applying a new reinforcing plate in accordance with No. 2 of the Action paragraph of Scheibe Flugzeugbau Technical Note No. 257-1/74, translation dated 26 June 1975, or an FAA-approved equivalent.
(c) If no cracks are found, within the next 100 hours' time in service after the effective date of this AD, modify the elevator drive shaft by applying a new reinforcing plate in accordance with No. 2 of the Action paragraph of Scheibe Flugzeugbau Technical Note No. 257- 1/74 translation dated June 26, 1975, or an FAA-approved equivalent.
This amendment becomes effective November 14, 1975.