# SDR CALA9701222

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 1997
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N69523](https://openairdocs.org/aircraft/N69523), registered now
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47520
- Engine: Pwa JT8D9A
- System (JASC): [7261 · Turbine Engine Oil System](https://openairdocs.org/jasc/7261)
- Part: Oil Pump
- Condition: Seized
- Location: Nr 2 Engine
- Stage of operation: CL
- Nature of condition: E, J
- Precautionary procedure: A, E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA9701222

## Discrepancy

THE AIRCRAFT DEVELOPED VIBRATION SHORTLY AFTER TAKEOFF AND THE NR 2 ENGINE OIL QUANTITY BEGAN TO DROP RAPIDLY.  THE NR 2 ENGINE WAS SHUT DOWN AND THE AIRCRAFT WAS RETURNED TO DCA WHERE IT LANDED WITHOUT INCIDENT.  THE NR 2 ENGINE WAS REMOVED AND REPLACED.  *S/D*  DISASSEMBLY REVEALED LPT IMPACT DAMAGE RESULTING FROM FAILED HARDWARE FROM THE NR 6 BEARING HOUSING AREA.  FURTHER DISASSEMBLY FOUND THE NR 6 PUMP SEIZED.  THE FAILURE OF THE NR 6 PUMP IS BELIEVED TO BE CAUSED BY LOOSE HARDWARE IN THE NR 6 HOUSING THAT LIBERATED AND EVENTUALLY BECAME LODGED IN THE PUMP'S GEARS THEREBY SEIZING THE PUMP.

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