# SDR COEA2026052801807

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2026
- Submitted: May 28, 2026
- Operation: Air carrier
- Aircraft: [N807FX](https://openairdocs.org/aircraft/N807FX), registered now
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 383
- Aircraft time: 39,387 hours, 44,175 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning Message
- Condition: Illuminated
- 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/COEA2026052801807

## Discrepancy

FLIGHT 7739, ENROUTE BIL-GTF.  AIR TURNBACK PERFORMED DUE TO LOSS OF AFCS, APM FAULT AND EXCESS CABIN ALTITUDE ON CLIMB OUT. NO EMERGENCY DECLARED.  MAINTENANCE CLEANED THE AIR VENTILATION VALVE AND OPS CHECKED THE PRESSURE CONTROL SYSTEM. OPS CHECKS OF AFCS AND APM, NO DEFECTS NOTED. SATISFACTORY OCF PERFORMED. AIRCRAFT RETURNED TO SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.