Airworthiness Directive · Amendment 39-21956 · Flight control system
Schempp-Hirth Flugzeugbau GmbH Gliders
This AD applies to Schempp-Hirth Flugzeugbau GmbH Model Ventus-2a and Ventus-2b gliders, all serial numbers, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Schempp-Hirth Flugzeugbau GmbH Model Ventus-2a and Ventus-2b gliders. This AD was prompted by mandatory continuing airworthiness information (MCAI) originated 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 severe corrosion on the inboard flaperon actuation push rods and ball bearing connecting the flaperon push rod to the bell crank inside the wing. This AD requires inspecting the affected parts of the flaperon control in the wings and taking corrective actions if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
Within 90 days after the effective date of this AD and thereafter at intervals not to exceed 12 months, inspect the pushrod, joint head, mount, and bell crank of the flaperon control of the wings for corrosion and other damage, in accordance with Action 1 in Schempp-Hirth Flugzeugbau GmbH Working Instructions for Technical Note No. 349-42/825-57, Revision 4, dated August 31, 2020, and before further flight, repair or replace the affected part, as applicable, in accordance with Action 2 in Schempp-Hirth Flugzeugbau GmbH Working Instructions for Technical Note No. 349-42/825-57, Revision 4, dated August 31, 2020.
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.
