# SDR HNAA2017030800079

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2017
- Submitted: March 8, 2017
- Operation: Air carrier
- Aircraft: N937HA
- Make and model: Dhav DHC8102
- Aircraft serial: 148
- Aircraft time: 67,803 hours, 76,498 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Dirty
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2017030800079

## Discrepancy

AIRCRAFT WILL NOT PRESSURIZE IN AUTO OR MANUAL.  CLEANED OUTFLOW VALVE IAW MM 21-30-00. OPS CHECKED GOOD. OK FOR SERVICE.

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