Casualties unknown

2021-05-06: Cessna 172K (ZS-FJU) — Parking bay, Zebula Airfield, Limpopo, ZA

Parking bay, Zebula Airfield, Limpopo, ZA

On May 6, 2021, a Cessna 172K (registration ZS-FJU) was involved in an aviation accident near Parking bay, Zebula Airfield, Limpopo, ZA. Investigators recorded the probable cause as: Overpriming the engine led to fuel flooding the hot cylinder heads, which ignited the fuel. This summary draws on records from the South African Civil Aviation Authority (SACAA) Accident and Incident Investigations Division.

Sourcesthe South African Civil Aviation Authority (SACAA) Accident and Incident Investigations DivisionPrimary reportUpdated 1785104676Data APIEditorial standards

A Cessna 172K (ZS-FJU) experienced an engine fire on the parking bay at Zebula Airfield after failed start attempts. The pilot and passenger evacuated safely; the fire was extinguished with a hand-held Halon extinguisher. Overpriming caused fuel to ignite on hot cylinder heads.

Accident Details

On 2 June 2021 at approximately 1301Z, a pilot and a passenger departed Rand Airport (FAGM) in a Cessna 172K aircraft, registration ZS-FJU, for a private hour-building flight to Zebula Airfield. The flight was conducted under Visual Flight Rules (VFR) by day. After performing a full-stop landing at Zebula Airfield, the pair left the aircraft. About two hours later, they returned to prepare for the return flight to Rand Airport.

The pilot attempted to start the engine three times but failed. Following advice from a safety pilot at the training school, the pilot waited approximately five minutes to avoid over-flooding. A subsequent start attempt also failed. To prevent draining the battery, the pilot switched off the master switch for several minutes. Shortly thereafter, both the pilot and passenger observed smoke emanating from the engine cowlings and immediately disembarked. Flames then appeared from the engine compartment. The pilot successfully extinguished the fire using the on-board hand-held Halon fire extinguisher.

The aircraft sustained fire damage to the engine compartment and paintwork on the cowlings. Neither the pilot nor the passenger sustained injuries.

Aircraft Information

  • Make/model: Cessna 172K
  • Registration: ZS-FJU
  • Total aircraft hours: 13,252.18
  • Damage: Substantial

Pilot Information

The pilot held a valid Private Pilot Licence (Aeroplane) and had accumulated 118.3 total flying hours, with approximately 46.3 hours on type. The pilot's age was 29 years.

Investigation

This limited accident report was compiled by the South African Civil Aviation Authority's Accident and Incident Investigations Division (AIID) based on information supplied by the affected persons. No formal on-site investigation was conducted.

Probable Cause

The cause of the fire was overpriming the engine, which led to fuel flooding the cylinder heads. The cylinder heads were still hot from the previous flight, igniting the fuel.