# SDR UIEA201906054387

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2019
- Submitted: June 5, 2019
- Operation: Air carrier
- Aircraft: [N1229A](https://openairdocs.org/aircraft/N1229A), registered now
- Make and model: Boeing 767306
- Aircraft serial: 28884
- Aircraft time: 69,773 hours, 15,378 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Gcu
- Part number: 734284F
- Part serial: 3387
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA201906054387

## Discrepancy

APU INOP.  PERFORMED BITE PROCEDURE OF APU ECU IAW AMM 49-61-05, NO FAULTS FOUND AND APU OPERATES NORMALLY. MCC REQUESTS REPLACEMENT OF GCU.  REMOVED AND REPLACED APU GCU IAW AMM 24-22-02. PERFORMED OPS CHECK OF APU GCU AND BITE CHECK. NO FAULTS FOUND, OPS CHECK GOOD.

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