CP140103 Aurora - Epilogue

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Report / August 27, 2015 / Project number: CP140103 Aurora - B Category

Location: 14 Wing Greenwood, Nova Scotia
Date: 27 August 2015
Status: Investigation Complete

The CP140 was taking off from 14 Wing Greenwood, Nova Scotia, on a transit mission to Iqaluit, Nunavut, in support of Operation (Op) QIMMIQ. Thunderstorms had recently passed over the airfield and the runway surfaces were wet.

During the takeoff roll, the crew observed a flock of birds flying towards the runway.  Perceiving a conflict and concerned about the risk of collision, the aircraft commander called “Malfunction” and the pilot flying aborted the takeoff.  During the abort procedure, the pilot flying the aircraft rapidly selected full reverse on all four propellers.  Both propellers on the left side of the aircraft went into full reverse; however, both propellers on the right side of the aircraft continued to produce forward thrust, resulting in asymmetric thrust pushing the aircraft left of the runway centreline.

The crew was not successful at keeping the aircraft on the runway and it departed off the left side of the runway, approximately 1000 feet before the departure end.  The propellers contacted a runway distance marker and a precision approach path indicator (PAPI) light.

The aircraft plowed through the soft earth and the nose gear collapsed, causing the inside propeller on the right side of the aircraft to strike the ground and break away from the engine.  After the aircraft came to a stop, all personnel on board exited the aircraft safely; only minor injuries were incurred.

The investigation examined human factors, the takeoff abort procedure, and the technical serviceability of the aircraft.  No aircraft technical faults were discovered.  The investigation recommended changes to procedures for the CP140 takeoff abort procedure, safeguarding CVR data, and the cockpit shoulder harness inertial reels.  The investigation also recommended making improvements to the runways at 14 Wing in order to minimize the chance of hydroplaning.

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