Background
On 5 October 2023, a Beechcraft Baron G58 (registration PK-LRV) operated by Angkasa Aviation Academy was conducting a training flight from Cakrabhuwana Airport, Cirebon, Indonesia. On board were a flight instructor and a second student pilot. The aircraft came to a stop on the runway with observable damage, including propeller marks and lower fuselage scratches on the runway surface.
Investigation Findings
The Komite Nasional Keselamatan Transportasi (KNKT) conducted a detailed investigation. Post-accident examination of the landing gear system revealed that the landing gear lever was found in the down position. Functional tests with external power connected showed that when the landing gear lever was down, all three green landing gear down-lock lights illuminated. When the landing gear was manually placed in the up position, the green lights extinguished and the flaps remained extended. The landing gear warning horn test produced a red warning indication on the primary flight display (PFD).
Visual evidence from the runway included propeller strike marks and lower fuselage contact marks. The aircraft's flight data recorder provided engine parameters and flight records for the last cycle, including the final touch-and-go.
Analysis
The KNKT analysis covered two main areas: alarm desensitization and pilot attention. The report discusses how the landing gear warning system may have been desensitized, reducing its effectiveness. It also examines how the pilots' attention might have been affected during the training flight, leading to the failure to extend the landing gear before touchdown.
Conclusions
The investigation concluded that the landing gear was not extended prior to landing, resulting in the aircraft contacting the runway with the gear retracted. Contributing factors identified include alarm desensitization and a lapse in pilot attention.
Safety Actions and Recommendations
Angkasa Aviation Academy received safety recommendations from the KNKT aimed at preventing similar occurrences. Specific recommendations are detailed in the full report.
Aircraft and Personnel Information
The aircraft was a Beechcraft Baron G58, a twin-engine piston aircraft. The flight instructor held a valid Airline Transport Pilot License (ATPL) with appropriate ratings, and the second student pilot was undergoing flight training.