Maintenance Powerplant; Maintenance Airframe
Situational Awareness
Aircraft Equipment Problem Critical
General None Reported / Taken
Manuals; Procedure
While dealing with a First Class seat problem; I noticed but it didn't register until later in the day (after filing a related report for pulling the Circuit Breaker) that the Seat Electronic Control Unit (ECU) I was working on had 3 electrical connectors on the top; two of which had electrical connectors in them. The third; however; was not used and also did not have a cover on the exposed connector. Is that third connector supposed to have a cover? I cannot confirm; but I was told by [another] Technician that the same ECU works on the 2 and 3 seat (B777) configurations; which leads me to believe the exposed connector might be live. Contact the manufacturer or the respective engineer to determine if covers would be appropriate or necessary; and if yes; correct this during overnight maintenance or B-Check level maintenance visit.
The reporter indicated that his Company Review Board had contacted him and that they are working with Engineering and Management personnel. The Review Board has confirmed that the associated maintenance specification indicates that the unused electrical receptacle should have a cover installed.
A Technician noticed that a B767 ECU Seat had an exposed connector. A Company review of the finding noted the unused electrical receptacle should have a cover installed.