# SDR UIEA2026061200463

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 12, 2026
- Submitted: June 15, 2026
- Operation: Air carrier
- Aircraft: [N489MC](https://openairdocs.org/aircraft/N489MC), registered now
- Make and model: Boeing 747412F
- Aircraft serial: 26553
- Aircraft time: 122,237 hours, 21,289 cycles
- Engine: Pwa PW4056
- System (JASC): [7260 · Turbine Engine Accessory Drive](https://openairdocs.org/jasc/7260)
- Part: Chip Detector
- Condition: Unsecure
- Location: Nr 1 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UIEA2026061200463

## Discrepancy

ENGINE 1 OIL QUANTITY LOSS IN FLIGHT, SHOWING 0 AT CRUISE STARTED AT 10 AFTER TAKEOFF.  ACCOMPLISHED ENGINE OIL INSPECTION PER ECM 2026P-203 REV 0. NO LEAKS FOUND. NOTED MASTER GEARBOX CHIP DETECTOR IN RT THRUST REVERSER COWLING. INSPECTED AND REINSTALLED CHIP DETECTOR IAW AMM 79-21-10. ACCOMPLISHED HIGH POWER, NO LEAKS NOTED IAW AMM 71-00-00.</P>)

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