What happened
On 18 June 2010, a Piper PA-30, registration N7976Y, was conducting a private flight from Jersey to Southampton. While cruising at 3,500 ft in visual meteorological conditions, the pilot noticed a significant decrease in the performance of the left engine. Although engine control positions were checked and an alternative fuel tank was selected, the pilot was unable to recover power. Despite the engine appearing to produce some power and maintaining normal oil pressure, the pilot found it increasingly difficult to maintain altitude.
To avoid the drag associated with a windmilling propeller, the pilot opted to land at a private airstrip near Lymington rather than attempting to reach Southampton Airport. During the approach, the pilot did not extend the flaps or the landing gear. Upon touchdown, the landing gear failed to lock and subsequently collapsed, causing the aircraft to come to an abrupt stop. The pilot and passenger were able to exit the aircraft without assistance and notified Solent Radar via emergency services.
The investigation
The investigation examined the aircraft's fuel levels and the mechanical state of the engine and landing gear. Prior to departure, fuel levels had been verified using a dipstick and water drains. Following the accident, the fuel system drains were inspected again, and no water was detected. The aircraft sustained damage to the propeller, wings, landing gear, and the underside of the fuselage. The aircraft was subsequently moved to a maintenance facility for further inspection to determine the cause of the engine failure.
Findings
- The pilot experienced a marked drop in performance from the left engine during the flight.
- The pilot chose not to feather the propeller to reduce drag, which may have contributed to the difficulty in maintaining altitude.
- The landing gear failed to lock, leading to its collapse upon landing.