# SDR DLL10954256

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 6, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N728DA
- Make and model: Lkheed 10113851
- Aircraft serial: 193C1173
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Pump
- Condition: Leaking
- Location: C-Hyd Syst
- Component: 3508807
- Stage of operation: AP
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DLL10954256

## Discrepancy

DURING GEAR EXT ON APPROACH, C-SYS HYD QTY LO QTY LIGHT ON AND C-SYS PRESSURE DROPPED TO ZERO.  HOWEVER, GEAR HAD FULLY EXTENDED, 3 GREEN QTY IN C-SYS DROPPED TO AND REMAINED AT .125 FULL.  FOUND C-SYS ATM HYD PUMP LEAKING AT SPLIT LINE.  REMOVED PUMP AND REPLACED SAME.

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