# SDR 2026FA0000566

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2026
- Submitted: July 7, 2026
- Operation: General aviation
- Aircraft: [N325GH](https://openairdocs.org/aircraft/N325GH), registered now
- Make and model: Cessna 525A
- Registry model: [Cessna 525A](https://openairdocs.org/model/cessna-525a) (OpenAirDocs)
- Aircraft serial: 525A0087
- Aircraft time: 5,294 hours, 4,182 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Pressure Valve
- Part number: 5253001
- Part serial: 1070
- Condition: Hung Up
- Location: Zone 400
- Part time: 2,517 hours, 2,020 cycles
- Component: Cabin Pressure, Textron
- Component part number: 5253001
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2026FA0000566

## Discrepancy

THE CREW REPORTED HOT AIR OUT OF THE LOWER AIR REGISTERS, THE FREON SYSTEM NOT ABLE TO COMPENSATE FOR THE EXCESSIVE AIR DISCHARGE.TROUBLE SHOT THE SYSTEM AND FOUND THE PRSOV PRESSURE REGULATION SHOT OFF VALVES  NOT REGULATING AIR TEMPERATURS.

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