AAIB Special Bulletin S2/2022: Bombardier CL-600-2B16 (604 variant), D-AAAY
Bombardier CL-600-2B16 (604 variant), uncommanded flap extension, in the climb departing Farnborough Airport, Hampshire, 10 August 2022.
Introduction:
At 1733 hours on 14 August 2022, the AAIB was informed that a Bombardier Challenger 604, registration D-AAAY, had an uncommanded flap extension, above the maximum flaps-extended speed. The event occurred at 1640 hours on 10 August 2022, while the aircraft was in the climb after departing Farnborough Airport. The aircraft returned to Farnborough where it landed without further incident.
On 15 August 2022, the AAIB commenced a safety investigation in accordance with Retained Regulation (EU) 996/2010 and the UK Civil Aviation (Investigation of Air Accidents and Incidents) Regulations 2018. In accordance with established international arrangements, the National Transportation Safety Board (US), Transportation Safety Board (TSB) of Canada and the German Federal Bureau of Aircraft Accident Investigation appointed Accredited Representatives to the investigation. The TSB was assisted by Advisers from Transport Canada and the aircraft manufacturer.
This Special Bulletin contains preliminary information from the investigation. One Safety Recommendation has been made and four Safety Actions have been taken by the regulator and aircraft manufacturer.
Download report:
Safety Recommendation document: