# SDR 96UAL900797

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N7945U
- Make and model: Boeing 727222
- Aircraft serial: 21899
- Engine: Pwa JT8D15
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Failed
- Location: Nr 1 Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96UAL900797

## Discrepancy

NR 1 ENGINE HIGH VIBRATION.  ENGINE SHUT DOWN, LOUD NOISE FROM ENGINE DURING SHUTDOWN.  COULD NOT DUPLICATE NOISE.  TWO DAYS LATER IN DEN MECHANICS REPORTED NR 1 ENGINE NOISY WITH HYDRAULIC PUMP ON AND STOPS WITH PUMP OFF.  REPLACED PUMP AND RUN-UP WAS GOOD.

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