Cameroon Airlines Flight 3701

Cameroon Airlines Flight 3701 took off from Cadjehoun Airport in Cotonou, Benin, on a flight to Douala International Airport. The Boeing 737-200 had 71 passengers and five crew on board and after a one-hour flight was ready to land at Douala International Airport, but as the landing gear was lowered the nose gear light showed that it was not down. The pilots called air traffic control saying that they had landing gear problems and the crew elected to abort the approach. Some minutes later they tried a second approach but the pilots did not see that the engine two was operating at high power while the No. 1 engine was not developing power. Then the aircraft went into a steep dive and crashed 6 kilometres (3.7 mi; 3.2 nmi) short of the runway in a mangrove swamp. The aircraft burst into flames, killing 71 passengers and crew. Five people survived the accident.[1]

The accident report determined the cause of the loss of control and the loss of power to engine No. 1 to be the following:

The probable cause of the accident is a loss of control during a go-around attempt made during a maneuver to reach the runway with degraded performance Seriously contributing to this:

1. The detachment by structural fatigue of a first stage compressor blade of the No. 1 engine which resulted in a loss of power and destabilization of the trajectory when landing
2. The late or slow execution of the go-around procedure with an unidentified single-engine configuration, leading to irreversible loss of speed.

— Accident report[1][4][5]