What happened
On July 23, 2000, a Jetstream 41, registration ZS-NRH, was operating a domestic scheduled flight from George Airport to Cape Town International Airport. The flight departed from Runway 11 under favorable weather conditions with a temperature of approximately 16°C.
Shortly after takeoff, as the aircraft reached an altitude of roughly 700 feet, the pilot noticed a drop in torque on the left-hand engine from the established 78% power setting. In an attempt to maintain climb performance, the pilot increased power to both engines. While the right-hand engine responded by increasing to 100% torque, the left-hand engine power fluctuated slightly before dropping to approximately 20%. In response to the engine malfunction, the pilot feathered and shut down the left engine, successfully performing a landing back on Runway 11 at George Airport.
Following the safe return, the aircraft was taxied to the apron. During this process, all four main wheels deflated completely. This occurred because the wheel overheat protection system triggered due to the heavy use of full brakes required during the landing, without the assistance of engine thrust reversers.
The investigation
The investigation focused on the mechanical failure of the left engine and the subsequent loss of tire pressure. Investigators examined the engine components and the braking sequence used during the emergency return to the airport.