# SDR 3EJA20241209721

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 7, 2024
- Submitted: December 9, 2024
- Operation: Air carrier
- Aircraft: [N753JS](https://openairdocs.org/aircraft/N753JS), registered now
- Make and model: Cessna 525B
- Registry model: [Cessna 525B](https://openairdocs.org/model/cessna-525b) (OpenAirDocs)
- Aircraft serial: 525B0100
- Aircraft time: 3,590 hours, 2,493 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: Faulted
- 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/3EJA20241209721

## Discrepancy

CLIMBING THROUGH 40500 FT HEARD A LOUD POP, SAW THAT THE DELTA PRESSURE WENT FROM 8.9 TO 8.0  DESCENDED TO FL 350 AND PRESSURIZATION HELD AT 8.0 CABIN ALTITUDE AT 6000 FT.

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