Airbus Industrie Undifferentiated or Other Model
Maintenance Airframe; Maintenance Powerplant
Maintenance Technician 30
Time Pressure; Communication Breakdown; Training / Qualification; Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Aircraft; Human Factors; Incorrect / Not Installed / Unavailable Part; Procedure
Maintenance Controller reported miscommunication over an MEL that allowed an aircraft to fly in a non-airworthy status.[Maintenance] in ZZZ called about Aircraft X had a 24 ELEC FAULT GEN INOP message. Several attempted resets with no help. A MEL was mentioned. Initial read through of the MEL and procedures appeared to be able to defer left generator. RTM was not generating any faults related to aircraft for chapter 24 at the time message was present on aircraft. I got dispatch approval and deferred Left generator with [Maintenance] reference log number XXXXXXX. After engine start noticed that RTM had generated a fault for Left Generator 24 ELEC FAULT GEN INOP with a no dispatch under the reference column. Reread the MEL and found an exception for INFO Message 24 ELEC FAULT GEN INOP making it a non-dispatchable MEL with this message. Immediately attempted to contact ZZZ maintenance and the flight crew of the aircraft to prevent Take off. The aircraft had already departed for ZZZ1. Contacted ZZZ1 maintenance about MEL not being dispatchable and that it would have to be fixed prior to departure from ZZZ1. Applied a CAR to lock down aircraft in ZZZ1 on arrival. ZZZ1 maintenance worked the item and was able to repair per A220 FIM and clear log item. To prevent future occurrences a highlight or bullet point in the section of the MEL for not being able to dispatch with that Message. Making it easier to identify message.
Maintenance Controller reported miscommunication over an MEL that allowed an aircraft to fly in a non-airworthy status.