# SDR ZZDA7921296

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 20, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N460AT
- Make and model: Boeing 737214
- Aircraft serial: 20158
- System (JASC): [7931 · Engine Oil Pressure](https://openairdocs.org/jasc/7931)
- Part: O-Ring
- Condition: Leaking
- Location: Nr 1 Engine
- Stage of operation: CL
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ZZDA7921296

## Discrepancy

MCO/OMA - FLT 800 - ON FLIGHT, NR 1 ENGINE OIL QUANTITY STARTED TO DECREASE ACCOMPANIED BY A DROP IN OIL PRESSURE (TO 30 PSI) FOLLOWED BY THE NR 1 ENGINE OIL PRESSURE LIGHT ON STEADY.  POWER WAS REDUCED TO IDLE RPM ON NR 1 ENGINE AND AIRCRAFT WAS DIVERTED TO MCI WHERE A NORMAL LANDING WAS CONDUCTED.  MECHANICS INSPECTED NR 1 ENGINE AND FOUND AN O-RING LEAKING AT THE OIL PRESSURE DIFFERENTIAL SWITCH.  THE O-RING WAS REPLACED AND THE ENGINE WAS RUN FOR A LEAK CHECK.  ALL CONDITIONS CHECKED NORMAL.  AIRCRAFT WAS RELEASED FOR FLIGHT.  (X)

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