# SDR 96ZZZX333

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: [N400CC](https://openairdocs.org/aircraft/N400CC), registered now
- Make and model: Gulstm G1159
- Aircraft serial: 102
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Shutoff Valve
- Part number: HP985100S11
- Condition: Leaking
- Location: Aft Equip Bay
- Part time: 10,884 hours
- Stage of operation: IN
- Nature of condition: K
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/96ZZZX333

## Discrepancy

SCHEDULED MAINTENANCE CHECKS WERE BEING CONDUCTED THAT REQUIRED OPERATION OF THE UTILITY HYDRAULIC PUMP.  A HEAVY SKYDROL MIST WAS NOTED COMING FROM THE AFT EQUIPMENT BAY.  INSPECTION FOUND THE UTILITY HYDRAULIC PUMP SHUT-OFF VALVE HAD RUPTURED AND WAS SPRAYING FLIGHT HYDRAULIC FLUID FROM AN AREA THAT HAD BEEN STAMPED BY THE MANUFACTURER.  SHUT-OFF VALVE MANUFACTURED BY HYDRA-POWER, MANUFACTURE PN HP985100S1-1, GAC PN 1159SCH217-1, SN 1127.

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