# SDR 2004UALA01019

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 2004
- Submitted: November 16, 2004
- Operation: Air carrier
- Aircraft: [N429UA](https://openairdocs.org/aircraft/N429UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 539
- Aircraft time: 32,453 hours, 11,640 cycles
- Engine: Iae V2527A5
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Line
- Condition: Obstructed
- Location: Nr 1 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, J, A
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2004UALA01019

## Discrepancy

NR 1 ENGINE OIL QUANTITY DECREASED FROM 15 TO 7 QUARTS.  AFTER LANDING THERE WAS SMOKE AND A SMALL FIRE FROM THE EXHAUST AREA.  EXCESSIVE COKING OF THE NR 5 BEARING COMPARTMENT OIL SCAVENGE LINE CAUSED OVER PRESSURIZATION OF THE COMPARMENT.  OIL WAS FORCED PASS THE NR 5 CARBON SEAL AND INTO THE EXHAUST GAS PATH.  ESCAPED OIL IN THE TEC FLASHED AFTER ENGINE SHUT DOWN.  REPLACED OIL SCAVENGE LINE.

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