# SDR UPS01235000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2001
- Submitted: February 16, 2001
- Operation: Air carrier
- Aircraft: [N922UP](https://openairdocs.org/aircraft/N922UP), registered now
- Make and model: Boeing 727-31C
- Registry model: [Boeing 727-31C](https://openairdocs.org/model/boeing-727-31c) (OpenAirDocs)
- Aircraft serial: 19231
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Module
- Part number: 65178218
- Condition: Failed
- Location: Hydraulic Sys
- 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/UPS01235000

## Discrepancy

INSPECTION TYPE:N/A ON CLIMBOUT OF WAW A-SYS HYD PRESS DROPPED TO ZERO.  NO FLUID LOSS.  INADVERTANT DEPLOYMENT OF NR 1 THRUST REVERSER ON TOUCH DOWN.  REPLACED A-HYD SYS PRESSURE MODULE DEACTIVATED NR1 T-R PER MEL.  SUSPECT OUT OF RIG.

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