Airworthiness Directive · Amendment 39-17811 · Placards and markings
Alexander Schleicher, Segelflugzeugbau Gliders
This AD applies to Alexander Schleicher, Segelflugzeugbau Model ASK 21 gliders, all serial numbers, certificated in any category, that have incorporated:
(1) Alexander Schleicher Segelflugzeugbau ASK 21 Technical Note No. 4, dated November 14, 1980; or
(2) Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Technical Note 4a, dated November 25, 2004.
We are adopting a new airworthiness directive (AD) for all Alexander Schleicher, Segelflugzeugbau Model ASK 21 gliders. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as inadequate guidance for spin training operations. We are issuing this AD to require actions to address the unsafe condition on these products.
Unless already done, do the following actions as specified in paragraphs (f)(1) through (f)(3) of this AD:
(1) For gliders modified following Alexander Schleicher Segelflugzeugbau ASK 21 Technical Note No. 4, dated November 14, 1980: Within 30 days after May 8, 2014 (the effective date of this AD), insert the amended pages into the glider's AFM and the ICA and install a cockpit placard following paragraph B) of the Action section in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Technical Note Nr. 4b, Issue for US registered gliders, dated October 31, 2013.
(2) For gliders modified following Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Technical Note 4a, dated November 25, 2004: Within 30 days after May 8, 2014 (the effective date of this AD), insert the amended pages into the glider's AFM and the ICA following paragraph C) of the Action section in Alexander Schleicher GmbH & Co. Segelflugzeugbau ASK 21 Technical Note Nr. 4b, Issue for US registered gliders, dated October 31, 2013.
(3) For all affected gliders: An owner/operator (pilot) holding at least a private pilot certificate may insert the amended pages into the AFM and ICA of the glider required by paragraphs (f)(1) and (f)(2) of this AD and must enter the action into the aircraft records showing compliance with this AD following 14 CFR 43.9 (a)(1)-(4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
