# SDR CALA2025072506921

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 23, 2025
- Submitted: July 25, 2025
- Operation: Air carrier
- Aircraft: [N39297](https://openairdocs.org/aircraft/N39297), registered now
- Make and model: Boeing 737824
- Aircraft serial: 34003
- Aircraft time: 56,942 hours, 20,990 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Control Panel
- Part number: 8143924002
- Part serial: 98083738
- Condition: Faulted
- Location: Cabin Pressure
- Part time: 74,035 hours, 27,338 cycles
- 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/CALA2025072506921

## Discrepancy

CABIN PRESSURE AUTO FAIL CLIMBING THROUGH 16900FT. HARD TO CONTR OL IN MANUAL MODE REPLACED CONTROL PANEL PER AMM 21-31-02-401.PERFORMED GRD TEST PER AMM 21-31-00 OK FOR SVC.

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