# SDR UIEA2026101200981

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 2026
- Submitted: October 13, 2026
- Operation: Air carrier
- Aircraft: [N485MC](https://openairdocs.org/aircraft/N485MC), registered now
- Make and model: Boeing 747-45EF
- Registry model: [Boeing 747-45EF](https://openairdocs.org/model/boeing-747-45ef) (OpenAirDocs)
- Aircraft serial: 30607
- Aircraft time: 114,342 hours, 20,138 cycles
- Engine: Ge CF680C2B1F
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Packing
- Condition: Missing
- Location: Oil Pump
- Stage of operation: CR
- How discovered: O
- Nature of condition: W, K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026101200981

## Discrepancy

1:30HR INTO FLIGHT AT 36000 ENG 4 OIL QTY INDICATED 10 MAGENTA,  DECREASED APPROX EVERY 10-20 MINS. 0 QTS INDICATED AT TOP OF DESCENT, DURING DESCENT IT INDICATED 1QT, LDG 0 QTS, & ENG SHUTDOWN 2 QTS.  AFTER ENG 4 EDP REMOVAL, FOUND EDP DRIVE SHAFT MISSING PACKING. INSTALLED PACKING AND NEW GASKET, AND ORIGINAL EDP INSTALLED IAW AMM 29-11-04/401. PERFORMED OPS TEST AND ENG IDLE RUN. OPS CHECK GOOD IAW AMM 71-00-00.  PFMD ENG #4 IDLE RUN IAW AMM 71-00-00, NO LEAKS NOTED. AFTER 10 MIN OF IDLE, 19 QTS BEFORE START, 19 QTS AFTER ENG SHUTDOWN, OPS CHECK GOOD.

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