On 4 February 2018, a Bombardier CRJ900 which had just arrived at Kigali after a flight from Entebbe was found to have identical damage to all left engine fan blade trailing edges and a small bolt was subsequently found trapped in the intake acoustic lining. The Investigation concluded that the recovered bolt had probably been picked up by the outboard left main gear tyre at slow speed and then ejected into the engine as wheel speed increased during takeoff thus causing the observed damage. FOD mitigation measures at Entebbe, where a major airside construction project was in progress, were faulted.