The Transportation Safety Board says a deadly plane crash in northern Saskatchewan last summer was caused when the plane stalled.

The board has released its report into the crash that happened on June 30th of last year when a de Havilland Beaver went down in Buss Lakes.

The pilot from Quebec, who was flying for Lawrence Bay Airways, died in the incident.

Four passengers from Saskatchewan were also killed on impact.

Safety board spokesman Peter Hildebrandt says it appears weather was not the cause of the crash:

“We undertook an extensive meteorological study — and that study indicates that there was weather in the area, but that weather would have moved off before the flight took off.”

Hildebrandt says there may have been factors which could have reduced visibilty, and investigators have issued a warning to pilots:

“There was a possibility of several low cloud banks or fog areas in the area, but not anything that would have affected the flight this way.  What we’re telling people is to avoid getting into an aerodynamic stall at low altitude.  Those two things combined can certainly lead to a serious accident.”

The report says the low altitude suggests the pilot was flying along the shoreline, possibly to allow the passengers to observe the area.