Incident Overview
On 31 July 2020, a Tecnam P2006T aircraft, registration SP-SPO, was involved in an incident at Szymany airport (EPSY) during a training flight. The flight was conducted as part of an IR(A) (Instrument Rating) examination, with a planned route from EPBC to EPSY and back to EPBC.
Flight and Engine Issue
During the approach to landing at EPSY, the left engine oil temperature exceeded its maximum limit. The examiner, who was on board, decided to shut down the affected engine and informed Szymany Tower (TWR) of the intent to land on one engine. The landing was performed without incident.
Investigation Findings
A post-flight inspection by technical personnel revealed contamination on the contacts of the oil temperature sensor connector. The connector pins were found to be dirty, which likely caused the erroneous high temperature indication.
Resolution
After cleaning the contacts and securing the electrical wiring, an engine run-up test was conducted. All engine parameters were within normal limits. The aircraft was subsequently released for further flight operations.