Incident Overview
On 24 July 2015, an Airbus A320-232 experienced an incident during takeoff at Katowice-Pyrzowice Airport (EPKT). The flight crew initiated a rejected takeoff after the ENG #2 FAIL alert illuminated. At the time of the rejection, the aircraft's speed was below V1. The deceleration was completed correctly along the runway centerline.
Post-Event Actions
After bringing the aircraft to a stop, the crew shut down engine number 2 and taxied the aircraft to the parking stand using the remaining engine. Once passengers had disembarked, maintenance personnel were called. Inspection of the engine nacelle revealed signs of fuel leakage from the engine drain mast (DRAIN MAST), as indicated by a red arrow in the report.
Engine Tests and Findings
Several ground runs were conducted at idle power. During the first idle run, fuel was observed seeping from the drain mast, originating from the Fuel Management Unit (FMU) drain. Subsequent idle runs did not show any leakage. In an effort to locate the fault, the FADEC (Full Authority Digital Engine Control) system was reset, and the fuel system connections were checked for tightness. Following this, a test run at idle was performed, followed by several runs at full power. After each full-power run, the drain mast was inspected for leakage; no leaks were observed. After the tests, the engine nacelle was opened and the engine was inspected, showing no anomalies.
Root Cause
Investigation determined that the ENG #2 FAIL alert was triggered by a FADEC system error. The fuel leak from the drain mast was caused by an accumulation of excess fuel in the FMU line, which was then expelled during engine acceleration to full power. The accumulated fuel was a residue from maintenance work performed three days before the incident.
Subsequent Operations
After the troubleshooting and tests, the aircraft was cleared for flight. No further engine issues were reported during subsequent operations.