# SDR A6WA202610098918

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 9, 2026
- Submitted: October 12, 2026
- Operation: Air carrier
- Aircraft: [N435AW](https://openairdocs.org/aircraft/N435AW), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7724
- Aircraft time: 43,991 hours, 43,186 cycles
- System (JASC): [2133 · Pressure Regulator/Outflow Valve](https://openairdocs.org/jasc/2133)
- Part: Outflow Valve
- Condition: Faulted
- Location: Zone 100
- 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/A6WA202610098918

## Discrepancy

DURING CLIMB RECEIVED CABIN ALT CAUTION MESSAGE AT ABOUT 11,000 FT THEN RECEIVED CABIN ALT WARNING SOON AFTER. DESCENDED TO 8,000 FT PRESSURIZATION STABILIZED. AIRCRAFT REMOVED FROM SERVICE.  FOUND OVERBD AND INBD EXHAUST VALVES DEACTIVATED INCORRECTLY.  SECURED OVERBD EXHAUST TO CLOSED AND INBD VALVE TO OPEN IAW AMM 21-24-00, SUP 21-259A.

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