What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
On 13 July 24, 2019 the aircraft was being operated by a flight instructor performing multiple ?full stop, taxi and takeoff? Maneuvers. While waiting at the hold short line the left engine failed. Restarting of the engine was attempted 3 times without success. At that time, the pilot requested taxi back to the ramp. While taxiing smoke was noticed coming from the left engine. ARFF responded, the fire extinguished and the aircraft was towed back to the operator?s ramp. Subsequent inspection of the engine compartment showed fire damage that exceeded the damage that would be caused by an overheated starter or electrical fire. The upper cowling showed signs of fire damage forward and aft of the rear vertical baffle assembly. The entire area aft of the baffle is covered in soot. The damage to the upper cowling was located above the starter (aft) and above the aftermarket fuel flow transducer installed via STC for digital fuel flow gauges (forward). This fuel flow transducer interferes with the removal and replacement of the magnetos, which occurred on 11 July 2019. The operator stated it is necessary to remove the transducer to facilitate the magneto maintenance. Fire damage to the magnetos, plug wires and fire sleeve around the fuel line indicates a fire also occurred in the area of the fuel flow transducer. Aft of the baffle most of the rubber components are melted due to excessive heat, the insulation on most of the wiring has been burned off and the fuel line fire sleeve is missing. The fuel line is routed next to the starter. Fire damage is apparent the entire length of the fuel line in the engine compartment.
As the FAA filed it
ON 13 JULY 24, 2019 THE AIRCRAFT WAS BEING OPERATED BY A FLIGHT INSTRUCTOR PERFORMING MULTIPLE ?FULL STOP, TAXI AND TAKEOFF? MANEUVERS. WHILE WAITING AT THE HOLD SHORT LINE THE LEFT ENGINE FAILED. RESTARTING OF THE ENGINE WAS ATTEMPTED 3 TIMES WITHOUT SUCCESS. AT THAT TIME, THE PILOT REQUESTED TAXI BACK TO THE RAMP. WHILE TAXIING SMOKE WAS NOTICED COMING FROM THE LEFT ENGINE. ARFF RESPONDED, THE FIRE EXTINGUISHED AND THE AIRCRAFT WAS TOWED BACK TO THE OPERATOR?S RAMP. SUBSEQUENT INSPECTION OF THE ENGINE COMPARTMENT SHOWED FIRE DAMAGE THAT EXCEEDED THE DAMAGE THAT WOULD BE CAUSED BY AN OVERHEATED STARTER OR ELECTRICAL FIRE. THE UPPER COWLING SHOWED SIGNS OF FIRE DAMAGE FORWARD AND AFT OF THE REAR VERTICAL BAFFLE ASSEMBLY. THE ENTIRE AREA AFT OF THE BAFFLE IS COVERED IN SOOT. THE DAMAGE TO THE UPPER COWLING WAS LOCATED ABOVE THE STARTER (AFT) AND ABOVE THE AFTERMARKET FUEL FLOW TRANSDUCER INSTALLED VIA STC FOR DIGITAL FUEL FLOW GAUGES (FORWARD). THIS FUEL FLOW TRANSDUCER INTERFERES WITH THE REMOVAL AND REPLACEMENT OF THE MAGNETOS, WHICH OCCURRED ON 11 JULY 2019. THE OPERATOR STATED IT IS NECESSARY TO REMOVE THE TRANSDUCER TO FACILITATE THE MAGNETO MAINTENANCE. FIRE DAMAGE TO THE MAGNETOS, PLUG WIRES AND FIRE SLEEVE AROUND THE FUEL LINE INDICATES A FIRE ALSO OCCURRED IN THE AREA OF THE FUEL FLOW TRANSDUCER. AFT OF THE BAFFLE MOST OF THE RUBBER COMPONENTS ARE MELTED DUE TO EXCESSIVE HEAT, THE INSULATION ON MOST OF THE WIRING HAS BEEN BURNED OFF AND THE FUEL LINE FIRE SLEEVE IS MISSING. THE FUEL LINE IS ROUTED NEXT TO THE STARTER. FIRE DAMAGE IS APPARENT THE ENTIRE LENGTH OF THE FUEL LINE IN THE ENGINE COMPARTMENT.