# SDR CALA2026031814657

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2026
- Submitted: March 18, 2026
- Operation: Air carrier
- Aircraft: [N76514](https://openairdocs.org/aircraft/N76514), registered now
- Make and model: Boeing 737824
- Aircraft serial: 31626
- Aircraft time: 56,109 hours, 20,220 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Switch
- Condition: Out Of Position
- Location: Cabin Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: W
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031814657

## Discrepancy

DEPRESSURIZATION MASTER WARNING OUT OF FL370.  CABIN ALT IND. 10 K FT. PERFORMED BITE ON CPC NR 1, FOUND MANUAL SWITCH CODE 058. PLACED CABIN PRESSURIZATION SWITCH TO AUTO AND PERFORMED BITE ON CPC NR 1.  SYSTEM OK IAW FIM TASK 21-31, TASK 801.

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