# SDR UIEA2025120501334

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2025
- Submitted: December 8, 2025
- Operation: Air carrier
- Aircraft: [N856GT](https://openairdocs.org/aircraft/N856GT), registered now
- Make and model: Boeing 747-87UF
- Registry model: [Boeing 747-87UF](https://openairdocs.org/model/boeing-747-87uf) (OpenAirDocs)
- Aircraft serial: 37561
- Aircraft time: 58,049 hours, 9,569 cycles
- System (JASC): [4970 · APU Indicating System](https://openairdocs.org/jasc/4970)
- Part: Warning Message
- Condition: Illuminated
- Location: Apu
- Stage of operation: CR
- 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/UIEA2025120501334

## Discrepancy

EICAS APU INDICATION IN FLIGHT. APU DUCT LEAK STATUS MSG. QRH COMPLIED WITH (APU FIRE HANDLE PULLED)(<P>OPERATED APU FOR ABOUT 3 HOURS WITH BLEED ON, NO LEAKAGE OBSERVED AND DETECTED REF AMM 49-11-00-862-001.

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