What happened
During an attempted engine start, the engine backfired, resulting in an induction fire. The pilot ceased cranking the engine immediately upon noticing the fire. However, strong surface winds significantly reduced the effectiveness of the aircraft's portable fire extinguisher. The pilot then retrieved a fire extinguisher from a nearby hangar, but that unit was also found to be unserviceable. By the time crash, fire, and rescue units arrived on the scene, the aircraft had already sustained substantial damage.
The investigation
The investigation focused on the sequence of events during the start attempt and the availability of firefighting equipment. It was determined that the initial portable extinguisher was ineffective due to wind conditions. Subsequently, the secondary extinguisher from the hangar was confirmed to be inoperable, leaving no means for the pilot to suppress the fire.
Findings
The primary factors contributing to the extent of the damage were the strong surface winds and the unavailability of functional fire suppression equipment. The pilot's decision to stop cranking the engine prevented further fuel flow, but the lack of effective extinguishing capability allowed the fire to consume the aircraft.
Safety message
Pilots should ensure that portable fire extinguishers are serviceable and appropriate for the wind conditions at the time of operation. Additionally, hangar-based emergency equipment must be regularly inspected and maintained to ensure readiness in critical situations.