Main Engine RT-flex periodically got "M/E control system abnormal" alarm same time unable to turn the main engine on air and on fuel to. What are possible causes of it?
Possible root of alarm is poor contact in one of control system switches terminals or faulty switch. For example there is a recorded issue with M/E control pressure switch abnormal electric signal which caused activation of "M/E control system" alarm. The solution in such cases is to trace the faulty switch and replace it with new or change over to back-up.
