Airworthiness Directive · Amendment 39-16360 · Wings
Aircraft Industries a.s. (Type Certificate G60EU Previously Held by LETECKÉ ZÁVODY a.s. and LET Aeronautical Works) Model L-13 Blanik Gliders
Superseded. A later AD replaced this one: AD 2010-18-05. Comply with the one in force.
This AD applies to Models L-13 Blanik gliders, all serial numbers, 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.
(1) As of July 19, 2010, aerobatics maneuvers (i.e., roll, loop, stalled turn, immelmann turn, half roll, and inverted flight) are prohibited. Before further flight after July 19, 2010, insert a copy of this AD into the flight manual to comply with the requirements of this paragraph. The chapter “Aerobatics” in “Pilot's Notes for the L-13 sailplane” (flight manual) is not valid.
(2) Before further flight after July 19, 2010, inspect the wing critical areas following Aircraft Industries a.s. Mandatory Bulletin MB No.: L13/109a, dated June 18, 2010, except use a 10X magnifier.
(3) If any cracks are found during the inspection required by paragraph (f)(2) of this AD, no further flights are permitted.
(4) Within 10 days after the inspection required by paragraph (f)(2) of this AD, submit the following information requested by Aircraft Industries a.s. Mandatory Bulletin MB No.: L13/109a, dated June 18, 2010, for further assessment. Send information to the address listed in paragraph (i)(2) of this AD.
(i) Appendix No. 1, Summary of L-13 glider Log book record; and
(ii) Paragraph H. RECORD IN GLIDER LOGBOOK AFTER BULLETIN EXECUTION.
Note 1: The above limitation is an interim solution until a final action is identified, at which time the European Aviation Safety Agency (EASA) and the FAA may consider further AD action.
Note 2: This AD differs from the MCAI and/or service information as follows. The service information requires a visual inspection with a 6X magnifier. We are requiring a 10X magnifier to detect cracks that could go undetected using only a 6X magnifier.
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
