# SDR 6CBA2026061126001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2026
- Submitted: June 11, 2026
- Operation: Air carrier
- Aircraft: [N131AF](https://openairdocs.org/aircraft/N131AF), registered now
- Make and model: Pilats PC1247E
- Aircraft serial: 2131
- Aircraft time: 4,287 hours, 3,658 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Malfunctioned
- Location: Cabin Pressure
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/6CBA2026061126001

## Discrepancy

CREW BEGAN DESCENT FROM FL230 AND AT AROUND FL200 HAD AN ACS LOW INFLOW CAS AND SAW THE CABIN ALTITUDE RISING. REQUESTED AN EMERGENCY DESCENT TO 10000 AND RESET THE ACS SYSTEM. ACS CAME BACK ONLINE NORMALLY AFTER THE DESCENT AND LANDING WAS UNEVENTFUL.

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