Airworthiness Directive · Amendment 39-16208 · Stabilizers
SCHEIBE-Flugzeugbau GmbH Model SF 25C Gliders
This AD applies to Model SF 25C gliders, serial numbers 44365 through 44370, 44372, 44374, 44375, and 44377 through 44450, certificated in any category.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Unless already done, do the following actions in accordance with SCHEIBE AIRCRAFT GMBH Service Bulletin 653-64, dated November 10, 2009.
(1) Within the next 2 days after March 15, 2010 (the effective date of this AD), remove the paint of the tube rivet heads at the aileron-hinges at wing rib No. 16 (in the area located at the lower side of the wing), disconnect the aileron from the wings, disconnect the elevator from the stabilizer, and inspect the tube rivet heads at the stabilizer to fuselage fittings to determine if the tube rivet heads are steel or brass.
(2) If the aileron hinges and the stabilizer to fuselage fittings are connected to the ribs and the spar with steel tube rivets, no further action is required.
(3) If the aileron hinges or the stabilizer to fuselage fittings are connected to the ribs and the spar with brass tube rivets 8x0, 75 mm, before further flight after the inspection required in paragraph (f)(1) of this AD, replace the brass tube rivets with screws.
Note: This AD differs from the MCAI and/or service information as follows: No differences.
