It appears, from close up photographs of a DECU box, that the connectors used are of the Amphenol Threaded type; hence the working loose. If this is the case, then they should have been replaced by a Amphenol Bayonet type connectors. But that involves time and money, and if you are in a hurry you have neither.
I believe that the connector pins used are of the EMI/EMP type. So clearly the DECU is very susceptible to EMI, RFI and EMP. Having a loose connector would not help the situation.
It also appears the the main connector to the Hydromechanical Metering Unit (part of FADEC) is of the Amphenol Threaded type. Of course that can not be checked in flight.
DV
Last edited by Distant Voice; 9th Jan 2012 at 12:22.