4 fatalities

Fatal Night Approach Accident at Chapleau (C-GJUL)

Chapleau, CanadaLanding (descent or approach)

On November 29, 1988, a Beechcraft 100 King Air (registration C-GJUL) operated by Voyageur Airways was involved in an aviation accident near Chapleau, Canada during landing or approach. 4 people were killed. Investigators recorded the probable cause as: The flight crew descended below the minimum applicable IFR altitude while approaching the Chapleau NDB. It could not be determined why the crew allowed the aircraft to descend, in controlled flight, into the ground. This summary draws on records from the Bureau of Aircraft Accidents Archives (B3A); 3 related events involving the same aircraft type or operator are linked below.

Sourcesthe Bureau of Aircraft Accidents Archives (B3A)Primary reportUpdated 2026-06-11Data APIEditorial standards

A twin-engine aircraft crashed during a night NDB approach to Chapleau, killing all four occupants. The crew descended below the minimum IFR altitude, and the reason for the descent could not be determined.

Incident Overview and Flight Details A twin-engine aircraft was operating an ambulance flight from Timmins to Chapleau. The aircraft was carrying two medical staff members and two pilots. The intended mission involved boarding a patient in Chapleau for transfer to Sault Sainte Marie. The flight proceeded without incident at flight level 120 before the crew began a night descent to Chapleau. During a final NDB approach, the aircraft struck the ground and crashed 2.5 kilometers southwest of the airport. The aircraft was destroyed, and all four occupants were killed. ## Official Findings The official investigation determined that the flight crew descended below the minimum applicable IFR altitude while approaching the Chapleau NDB. The investigation could not determine why the crew allowed the aircraft to descend, in controlled flight, into the ground.

Probable cause

The flight crew descended below the minimum applicable IFR altitude while approaching the Chapleau NDB. It could not be determined why the crew allowed the aircraft to descend, in controlled flight, into the ground.