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ASN Wikibase Occurrence # 201545
Last updated: 10 October 2021
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Time:c. 15:00 UTC
Type:Silhouette image of generic CL60 model; specific model in this crash may look slightly different
Bombardier CL-600-2B16 Challenger 604
Registration: C-GKTO
MSN: 5396
Fatalities:Fatalities: 0 / Occupants: 9
Other fatalities:0
Aircraft damage: None
Location:near ETIKI waypoint, 400 km S of Ireland -   Atlantic Ocean
Phase: En route
Departure airport:Leeds/Bradford Intl, UK (EGNM)
Destination airport:St-Johnís Intl, NL (CYYT)
A Bombardier Challenger 604 aircraft was conducting a flight from Leeds/Bradford, UK to St-Johnís, Canada, with 2 crew members and 7 passengers on board. During the oceanic entry cruising at FL340 in the vicinity of waypoint ETIKI, the flight crew received intermittent amber 'A' messages on both PFDs, associated with AP TRIM IS RWD and AP TRIM IS LWD EICAS messages. Transfer of the autopilot from one side to the other did not resolve the problem and, as the flight crew decided to fly the aircraft manually, there was a rapid and significant roll of less than 20į to the right when the autopilot was disconnected. Extreme force was required to roll the aircraft back to the left, while
turning to the right was normal. The flight crew executed the emergency checklist and requested a direct routing to Shannon Intl, Ireland (EINN). No emergency was declared, and aileron control improved as the aircraft descended. The aircraft subsequently landed on runway 06 with flaps 20 and ARFF standing by.
During the post-flight inspection, the operatorís maintenance noted that there was a significant amount of water dripping from the underside of the fuselage, aft of the wheel well in proximity of the lower beacon. The operator is suspecting that a water leak caused a freezing of the aileron trim mechanism.


Transport Canada


Photo of C-GKTO courtesy

Helsinki - Vantaa (EFHK / HEL)
5 June 2019; (c) Pertti Sipilš

Revision history:

21-Nov-2017 19:27 harro Added
21-Nov-2017 19:55 harro Updated [Nature, Narrative]

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