AAIB investigation to Grob G102 Astir CS, G-CJSK
Aileron control disconnection in flight resulting in pilot abandoning the glider by parachute, Gibett Hill, Brentor, near Tavistock, Devon, 23 June 2021.
Summary:
The right aileron L’Hotellier control connection in the fuselage became disconnected in flight, causing the pilot to abandon the glider by parachute. The control connection was equipped with a secondary Wedekind sleeve locking device, and the pilot had conducted a positive control check to his satisfaction prior to the accident flight. The investigation demonstrated that it is possible to partially assemble this type of control connection such that the connection is not secure, despite appearing to be so during a positive control check. The BGA has provided guidance to affected aircraft owners on how to inspect this type of control connection to ensure that it is secure, following glider assembly.
Bulletin Correction
A correction concerning this report was issued on 15 December 2021.
Full details of the correction can be downloaded below:
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