# SDR 2026F00007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2026
- Submitted: February 2, 2026
- Operation: General aviation
- Aircraft: N853AT
- Make and model: Boeing 737436
- Aircraft serial: 25853
- Aircraft time: 58,189 hours, 42,453 cycles
- Engine: Cfmint CFM563C1
- 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/2026F00007

## Discrepancy

AFTER TAKEOFF, THE AIRCRAFT DOES NOT PRESSURIZE, IT IS NECESSARY TO RETURN TO PDA

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