Lockheed L188C, G-FIZU
Immediately after takeoff on a night flight from Stansted to Edinburgh the flight crew experienced control difficulties and fluctuation of the RPM and power on all four engines. As the aircraft climbed towards 3,000 feet QNH the number 2 engine was observed to be running down. The crew shut the engine down, declared a PAN and prepared to return to Stansted. The remaining three engines continued to suffer from fluctuating parameters throughout the remainder of the flight until, when on final approach with landing flap selected, both the number 1 and number 3 engines appeared to run down. The aircraft landed using the remaining engine. The investigation revealed that the incident was the result of a failure of the propeller synchrophaser.
Published 10 December 2014