What happened
On the evening of 20 June 2023, three pilots from the Richcopter Inc. flight training unit were performing night circuits and touch-and-go maneuvers under visual flight rules (VFR) at the Ottawa/Gatineau Airport, Quebec. The flight operations involved three separate Cessna 150 aircraft.
The sequence of departures began with the first aircraft, C-GUGC, taking off at 21:28. This was followed by the second aircraft, C-FUAE, at 21:30, and the third aircraft, C-GRAE, at 21:32.
During the training maneuvers, the third aircraft, C-GRAE, positioned itself directly above C-FUAE. At approximately 21:45, while flying at an altitude between 100 and 200 feet above ground level, C-GRAE struck C-FUAE. Both aircraft subsequently landed, where damage was identified on both airframes.
The investigation
The TSB conducted a Class 4 investigation into the collision. The investigation focused on the flight paths of the three aircraft during the night training exercise and the relative positions of the aircraft at the time of the impact.