On 9th March 2020 at about 07:35 h, an Embraer EMB-135ER aircraft with nationality and registration marks 5N-BSN owned and operated by Bristow Helicopters (Nigeria)Limited departed Lagos and arrived Port Harcourt Military base about one hour later.
The flight from Lagos to Port Harcourt was normal. At 09:19 h, 5N-BSN was airborne Port Harcourt Military (DNPM). According to the flight crew, climbing through 300 feet after gear retraction, a loud bang was heard on the left side, aircraft yawed to the left, Engine-Indicating and Crew-Alerting System (EICAS) showed that the left engine had failed. The crew stated that the aircraft was put under control and climbed to a safe altitude of 1,500 ft. Thereafter, they completed the one-engine inoperative checklist. The Quick Reference Handbook was consulted for abnormal and emergency procedures.