The pilots returned to Farnborough, where the plane landed safely at 16:51, albeit slightly over the maximum landing weight. This was in spite of the flap lever being in the 0 position, where the flaps should be fully retracted.
The cabin crew member checked the flaps through the window and saw they were fully extended. The captain took control of the aircraft, slowed it down and descended the aircraft. However, despite the plane’s speed being above the maximum speed at which the flaps can be safely operated, there was no flap overspeed audio warning. However, at around 16:40, when the autopilot was engaged and as the Challenger was passing through Flight Level 190 (approximately 19,000 feet) at an indicated airspeed of some 300 knots, the crew were alerted to a flap failure caution message. The twin-engine plane took off without incident from FAB and the crew retracted the flaps. “Had the aircraft been in the cruise, the crew may not have been able to recognise the uncommanded flap extension so promptly and take corrective action within the time required for the flaps to fully extend,” the AAIB wrote in the special bulletin, published on September 22, 2022. On this occasion, the crew were closely monitoring the aircraft while it was still in the climb phase of flight and so were able to react quickly. The investigation is still ongoing, but the incident, classed as serious by the UK Air Accidents Investigation Board (AAIB) is concerning enough that a special bulletin has been issued, with one safety recommendation and four safety actions for the manufacturer and Canadian regulator, including checks to aircraft and providing operators with information on the occurrence.įlaps extending in flight is a potentially catastrophic event, meaning one that could lead to the aircraft being destroyed and/or multiple deaths. After the flaps extended uncommanded during the climb out, the crew took action, landing back at FAB at 16:51, with no injuries to anyone on board. Onboard were three crew and seven passengers.
BOMBARDIER CL 600 JET REGISTRATION
The business jet, registration D-AAAY, departed Farnborough Airport (FAB) at 16:18 UTC on August 10, 2022, to carry out a private charter flight to Málaga – Costa Del Sol Airport (AGP) in Spain. UK aviation accident investigators have issued a special bulletin after the flaps on a Bombardier Challenger 604 extended inadvertently, potentially endangering the safety of the aircraft.
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