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The Metroliner III was departing Cooktown for Cairns. At about 250 ft above ground level the flight crew noticed that a fuel by-pass light had illuminated. The crew reported that they then retarded both engine power levers slightly in an attempt to extinguish the light. The left engine torque indications immediately began to fluctuate by about 5 percent but then increased to 20 percent. The left exhaust gas temperature and fuel flows were also fluctuating. The engine torque indications continued to surge and the pilot-in-command elected to shut down the engine as a precautionary measure. The crew then notified air traffic control of their intention to return to the departure runway, where the aircraft made a single engine landing.

Subsequent trouble shooting determined that the engine problem was associated with a transient fault in the Single Red Line computer for the left engine. The computer was replaced and the aircraft was returned to service without recurrence.

The company safety officer reported that he conducted an investigation into the incident and advised that, as the aircraft performance was not significantly impaired and because there was no indication of fire or catastrophic failure, it would have been more appropriate for the crew to continue the climb with both engines operating until a more detailed assessment of the situation could be made.

The occurrence brief is based on information obtained from the company's safety officer. The ATSB did not conduct an on-site investigation into the occurrence.

 
General details
Date: 18 June 2001 Investigation status: Completed 
Time: 1740 hours EST Investigation type: Occurrence Investigation 
Location   (show map):Cooktown, Aero. Occurrence type:Abnormal engine indications 
State: Queensland Occurrence class: Technical 
Release date: 25 September 2001 Occurrence category: Incident 
Report status: Final Highest injury level: None 
 
Aircraft details
Aircraft manufacturer: Fairchild Industries Inc 
Aircraft model: SA227 
Aircraft registration: VH-UUN 
Serial number: AC-686 
Type of operation: Air Transport Low Capacity 
Damage to aircraft: Nil 
Departure point:Cooktown, QLD
Departure time:1740 hours EST
Destination:Cairns, QLD
 
 
 
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Last update 13 May 2014