What happened
On 5 July 2024, a Tecnam P96 Golf, registration ZU-DLU, was conducting a private flight from Sishen Airport in the Northern Cape to a destination near Brui in the North West Province. The flight was operating under Visual Meteorological Conditions (VMC) in accordance with Part 94 regulations.
Approximately ten minutes after departure, while cruising over a remote area near Brui, the pilot observed a low fuel pressure warning. Shortly thereafter, the engine lost power. The pilot successfully identified a gravel road adjacent to the R379 and executed a forced landing. During the touchdown on the uneven, shrub-filled surface, the aircraft sustained minor damage to the left wing, left elevator, and the underside of the fuselage. The pilot escaped the incident without injury.
The investigation
SACAA AIID investigators examined the engine and fuel system following the incident. Post-accident testing of the engine showed no mechanical defects, and the engine met all required operating parameters during subsequent runs. The fuel on board was found to be of the correct grade, sufficient in quantity, and free of contaminants. No disconnections were found in the carburettors or throttle control.
An assessment of the fuel system design noted the absence of an overflow fuel return line. Investigators considered that the lack of this component might lead to induced fuel vapor lock caused by engine heat during operations in high-temperature environments, such as those found in South Africa.
Findings
- The pilot held a valid Private Pilot Licence and a current Class 2 medical certificate.
- The aircraft had a valid Authority-to-fly and a current Certificate of Release to Service.
- No mechanical defects or fuel restrictions were identified during post-incident engine testing.
- The aircraft's European design may be susceptible to technical issues when operating in extreme heat due to the lack of a fuel return line, potentially causing vapor lock.