# SDR CALA2020032000640

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2020
- Submitted: March 20, 2020
- Operation: Air carrier
- Aircraft: [N2748U](https://openairdocs.org/aircraft/N2748U), registered now
- Make and model: Boeing 777-300ER
- Registry model: [Boeing 777-300ER](https://openairdocs.org/model/boeing-777-300er) (OpenAirDocs)
- Aircraft serial: 64994
- Aircraft time: 6,081 hours, 532 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Condition: Faulty
- Location: Nr 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: H
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2020032000640

## Discrepancy

THE TOMC CONTROLLER AND SENIOR MANAGER CONCUR THAT THE AIRCRAFT CAN BE RELEASED BACK TO SERVICE AFTER EXPERIENCING A DIVERSION OR AIR TURN BACK DUE TO A MECHANICAL REASON LOCKED BY SYSTEM. BASED ON POSITIVE ACTION TAKEN WITH INSPECTION OF #2 ENG GEN FEEDERS, HARNESS & CONNECTORS AND REPLACEMENT OF FAULTY #2 GCU - TOMC UNLOCKING PAGE WITH CONCURRENCE OF TOMC MGR AND EWR MGR. TOMC CLEARING PER PREV ENTRY - REF ACTION TAKEN L/P 4725666, 4726610 AND 4728875 - EWR VERIFIED NO FAULTS WITH #2 ENG GEN, HARNESS, FEEDER WIRES AND CONNECTIONS AND REPLACED #2 ENG GCU. PLA 01206 ISSUED ON L/P 4726610 TO RESTRICT AC TO DOMESTIC OPS FOR 3 LEGS TO MONITOR

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