# SDR 2011F00146

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 17, 2011
- Submitted: June 17, 2011
- Operation: Air carrier
- Aircraft: N836NK
- Make and model: Doug DC-9-83
- Registry model: [Doug DC-9-83](https://openairdocs.org/model/douglas-dc-9-83) (OpenAirDocs)
- Aircraft serial: 53045
- Engine: Pwa JT8D219
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Shaft
- Condition: Failed
- Location: Hyd Pump
- Component: Hyd Eng Driven
- Component part number: AS66411LS6
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2011F00146

## Discrepancy

AFTER TAKEOFF, NR 1 ENG HYD PRESSURE LOW; ACFT RETURNED TO DEPARTURE, MX TROUBLESHOT TO LT ENGINE HYD PUMP SHAFT FAILED.  R & R LEFT HYD PUMP AND CASE DRAIN FILTER IAW AMM 29-10-05 AND 29-10-14.

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