# SDR DXTA200802834

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2008
- Submitted: February 27, 2008
- Operation: Air carrier
- Aircraft: [N848QS](https://openairdocs.org/aircraft/N848QS), registered now
- Make and model: Raythn HAWKER900XP
- Aircraft serial: HA0031
- Aircraft time: 35 hours, 32 cycles
- Engine: Garrtt TFE7315R
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Part number: 3212921
- Part serial: 3179
- Condition: Inoperative
- Location: Aft Service Bay
- Part time: 32 hours, 32 cycles
- 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/DXTA200802834

## Discrepancy

AFTER T/O LT MAIN AIR VALVE LIGHT CAME ON AND CHECKLIST CALLS TO RECYCLE CLOSED/OPEN. LIGHT CAME BACK ON. REPLACED LT MAIN AIR VALVE WITH O/H UNIT. OPS AND LEAK CHECKED GOOD IAW MM 21-16-25.

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