EASA SIB 2012-04: LÂ´Hotellier Ball and Swivel Joints Quick Connectors — Positive Check of Control Surfaces

What to do

Owners and operators of affected sailplanes and powered sailplanes should implement a positive control surface check involving at least two individuals after assembly. One person should hold the control surface stationary while the other attempts to move the flight controls in both directions to verify secure connection. Additionally, incorporating safety pin locking procedures from the referenced German airworthiness directives into assembly processes is advised. No mandatory compliance deadline is specified.

Summary

EASA Safety Information Bulletin SIB No. 2012-04 addresses the positive check of control surfaces for sailplanes, powered sailplanes, and other aircraft equipped with L'Hotellier ball and swivel joint quick connectors. This bulletin follows a fatal accident involving an Eiriavion PIK 20D sailplane in Belgium, highlighting the importance of ensuring proper connection of elevator controls during assembly. The bulletin references previous airworthiness directives issued by the German Civil Aviation Authority concerning these connectors but clarifies that these are not recognized by EASA as mandatory under European regulations.

What changed

EASA SIB No. 2012-04 introduces a recommendation for a positive check of control surfaces after assembly of aircraft equipped with L'Hotellier quick connectors. It emphasizes a two-person verification process to ensure elevator controls are properly connected and secured. The bulletin does not mandate new airworthiness directives but suggests incorporating safety pin locking procedures from German ADs into assembly practices.

Why it matters

This bulletin is important for aviation professionals because improper connection of control surfaces can lead to fatal accidents, as demonstrated by the referenced incident. Operators and maintenance personnel must be vigilant during assembly and pre-flight checks to prevent control surface disconnection. Following these recommendations enhances flight safety and reduces the risk of in-flight control failures related to L'Hotellier connectors.