Maintenance Airframe; Maintenance Powerplant
Troubleshooting
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural Published Material / Policy
General None Reported / Taken
Procedure; Human Factors; Environment - Non Weather Related; Aircraft
Airline was notified by the FAA twice that Aircraft X was not broadcasting ADS-B Out Parameters.The First time the item was deferred and wasn't worked for a year due to the aircraft being in storage because of the pandemic.   The item was worked in ZZZ1 and signed off.Airline was notified again the ADS-B Out was not broadcasting.   Airline found a wire that wasn't capped as called out in COA (Certificate of Approval/Authority) X.
Maintenance Technician reported one of their aircraft was found to have wiring issues causing the ADS-B to malfunction. The aircraft had been in storage for an extended time period.