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TSB Canada factual update on Fond-du-Lac ATR 42 accident: aircraft had ice contamination on takeoff
23 April 2018

TSB Canada factual update on Fond-du-Lac ATR 42 accident: aircraft had ice contamination on takeoff

The Transportation Safety Board of Canada (TSB) released a factual update on its investigation (A17C0146) into the fatal ATR 42 aircraft accident that occurred in Fond-du-Lac, Canada, on 13 December 2017.

The updates details the following sequence of events:

  • On 13 December 2017, an ATR 42-320 aircraft operated by West Wind Aviation arrived at Fond-du-Lac Airport at 17:25 central standard time.
  • During the descent, the aircraft encountered icing conditions and the anti-icing and de-icing systems were activated. When the de-icing and anti-icing systems were turned off, residual ice remained on portions of the aircraft.
  • The aircraft stayed at the Fond-du-Lac Airport to board new passengers and cargo.
  • The operator, West Wind Aviation, had some de-icing equipment in the terminal building at the airport. The de-icing equipment that was available to WestWind Aviation in Fond-du-Lac consisted of two ladders, a hand-held spray bottle with electric blanket and wand, and a container of de-icing fluid. However, the aircraft was not de-iced before takeoff, and the takeoff was commenced with ice contamination on the aircraft.
  • The aircraft departed Fond-du-Lac Airport at 18:11 for Stony Rapids.
  • At 18:12, shortly after takeoff, the aircraft collided with trees and terrain less than a mile west of the end of Runway 28.

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US-Bangla Airlines flight BS211, a DHC-8-Q400 (S2-AGU), crashed after landing at Kathmandu-Tribhuvan Airport, Nepal on March 12, 2018. The AAIC report does not detail the details preceding the accident. The flight was cleared for an approach to runway 02 but the aircraft failed to land and instead continued on runway heading, performing an orbit and requesting an approach and landing on runway 20.

The preliminary report starts by saying that “the aircraft touched down at about 1700 meters down the threshold and on the left portion of centerline of Runway 20.” The aircraft then went off the left side of the runway, ran through the inner perimeter fence of the airport area, moved down along rough downslope and finally stopped at about 442 meters from its initial touch down point. At this point, the aircraft caught fire and was completely destroyed.
A fire erupted. A total of 22 passengers initially survived the accident. Two later died of their injuries.

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