Recommendation Date
Recipient Name
FlightLine Aviation
Text
Review Flightline's Rolls-Royce Allison 250-C20B engine trouble-shooting procedures, and ensure comprehensive fault diagnosis is carried out when a repeated component change does not rectify a known problem.
Reply Text
As stated within our submission to the report, all the relevant trouble-shooting procedures (and more) were carried out in accordance with the maintenance manual pertaining to the defect information supplied at the time.
Flightline Aviation's engineering staff are qualified and well experienced concerning this engine type. All documented trouble-shooting procedures were followed in accordance with the maintenance manual and it is only in hindsight with a complete set of facts that anyone could conclude that repeated component changes in this instance might not have been the best course of action. During the maintenance process the defect information changed regularly, and based on past experience, Flightline staff acted reasonably in light of the information on hand.
The intent of the safety recommendation refers specifically to this one engine type. “Trouble-shooting procedures and comprehensive fault diagnosis for repeated component changes’ relates not to only this one task but all trouble-shooting tasks. It is a generic requirement and Flightline cannot implement additional processes concerning one task over any other. As such we believe there is no necessity to implement this safety recommendation in addition to our current practices.
Flightline Aviation's engineering staff are qualified and well experienced concerning this engine type. All documented trouble-shooting procedures were followed in accordance with the maintenance manual and it is only in hindsight with a complete set of facts that anyone could conclude that repeated component changes in this instance might not have been the best course of action. During the maintenance process the defect information changed regularly, and based on past experience, Flightline staff acted reasonably in light of the information on hand.
The intent of the safety recommendation refers specifically to this one engine type. “Trouble-shooting procedures and comprehensive fault diagnosis for repeated component changes’ relates not to only this one task but all trouble-shooting tasks. It is a generic requirement and Flightline cannot implement additional processes concerning one task over any other. As such we believe there is no necessity to implement this safety recommendation in addition to our current practices.
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