On 13th June 2022, a Twin Otter DHC-6-400 aircraft with nationality and registration marks 5N-SHE operated by Caverton Helicopters Limited was scheduled to depart Nigerian Air Force (NAF) Base Port Harcourt (DNPM) for Forcados Airstrip on a Command Line Training flight in TAKE-OFF, APPROACH and LANDING procedures. On board the aircraft were four crewmembers, including the Line Training Captain, Trainee Pilot, Observer and Engineer. The endurance was two hours 50 minutes. The Trainee Pilot was the Pilot Flying (PF) while the Line Training Captain was the Pilot Monitoring (PM).
According to the Air Traffic Control (ATC), 5N-SHE was cleared to 5,000 ft Above Mean Sea Level (AMSL) for a right turn pattern in the circuit runway 20.
At 13:26 h, 5N-SHE got airborne, completed right hand traffic pattern and landed on runway 20 Forcados Airstrip at 13:37 h.
At 13:50 h, the aircraft got airborne again and completed the second traffic pattern.