Incident Overview
On May 30, 2018, a Piper PA-44-180T aircraft operated by an airline transport pilot (ATPL) was conducting a takeoff from Modlin Airport (EPMO). During the takeoff roll, shortly after beginning the run, the aircraft experienced a sudden veer to the right accompanied by airframe vibrations. The pilot rejected the takeoff at approximately 40 knots. Subsequently, the right engine shut down. The aircraft taxied back to the parking area using only the left engine.
Pre-Event Conditions
Before the flight, no anomalies were noted with the right engine; all parameters were within normal limits. Post-incident inspection revealed no fuel or oil leaks and no mechanical damage. There was no fire or visible signs of engine distress.
Investigation Findings
The investigation focused on the fuel system, as the electric fuel pump for the right engine had been replaced the previous day (May 29, 2018). During testing, an airlock was discovered in the fuel line supplying the right engine. After bleeding the air from the system and verifying fuel system integrity, an engine run-up was performed, and the engine operated normally.
Cause
The incident was caused by a fuel supply interruption to the right engine due to an airlock in the fuel system that occurred after the replacement of the electric fuel pump.
Preventive Actions
The operator took the following preventive measures: (1) Discussed with the pilot the causes of the incident and the importance of monitoring engine parameters during pre-takeoff engine runs. (2) Established a procedure to check fuel flow at takeoff rpm using the flow meters after maintenance tasks.
Safety Recommendations
No safety recommendations were issued by the investigation body.