TSB: faulty valve led to 2011 Challenger mishap at Iqaluit airport
Jet from California left runway, plowed into snowbank
A malfunctioning valve caused a Challenger aircraft to veer off the Iqaluit airport runway and end up in a snowbank in a March 2011 incident, the Transportation Safety Board said in a report issued Jan. 8.
The jet, operated by Tri Marine Management Company LLC, had departed Long Beach, Calif. on March 12, 2011, with two crew members and one passenger on board.
The crew attempted to land the plane at Iqaluit around 9 p.m. that evening.
But when they touched down, the nose wheel veered to the right and the crew were unable to steer the aircraft.
After travelling for about 400 feet over frozen ground, the plane stopped in a snow bank about 100 feet from the edge of the runway.
No one was injured and only the nose and landing gear of the aircraft were damaged.
The TSB found that a part called an electro hydraulic servo valve, or EHSV, did not close, preventing the nose wheel steering system from working.
They said in their investigation report that the part failure was likely due to contamination, internal corrosion and exposure to cold temperatures.
The manufacturer of the Challenger jet, Bombardier, is now preparing a service bulletin on the issue and has introduced a new EHSV configuration.
The TSB is still working on reports that look into the fatal crash of a First Air jet at Resolute Bay on Aug. 20, 2011 and a crash at Sanikiluaq on Dec. 23, 2012 that led to the death of a six-month-old baby.