# SDR UIEA2026010300003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 3, 2026
- Submitted: January 5, 2026
- Operation: Air carrier
- Aircraft: [N476MC](https://openairdocs.org/aircraft/N476MC), registered now
- Make and model: Boeing 747-47UF
- Registry model: [Boeing 747-47UF](https://openairdocs.org/model/boeing-747-47uf) (OpenAirDocs)
- Aircraft serial: 29256
- Aircraft time: 103,423 hours, 18,846 cycles
- Engine: Ge CF66D
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Plug
- Condition: Leaking
- Location: Zone 400
- Stage of operation: CR
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026010300003

## Discrepancy

DIVERSION ENGINE 3 OIL QUANTITY LOSS.  INSPECTED #3 ENG AND FOUND OIL LEAKING FROM #3 IDG. DEACTIVATION BLANKING PLATE, REMOVED BLANKING PLATE AND FOUND DRIVE SEAL PLUG MISSING & INSTALLED DRIVE SEAL PLUG PER MEL 24-11-01A. RAN ENG IAW AMM 71-00-00, LEAK CHECK OK.

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