# SDR CALA2026102720592

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 25, 2026
- Submitted: October 27, 2026
- Operation: Air carrier
- Aircraft: [N75435](https://openairdocs.org/aircraft/N75435), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33529
- Aircraft time: 53,654 hours, 19,454 cycles
- Engine: Cfmint CFM567B27
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Cabin Pressure
- Condition: Lost
- Location: Zone 200
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026102720592

## Discrepancy

PASSING 14000FT LOST PRESSURIZATION ON DESCENT GOT TO 8000, OUTFLOW VALVE OPENED.  C/W CABIN DEPRESSURIZATION CONDITIONAL INSPECTION IAW AMM 05-51-81-210-801, NO DEFECTS NOTED. PERFORMED PRESSURIZATION SYSTEM GROUND TEST IAW AMM 21-31-00-700-802 OPS CHECK GOOD, SYSTEM 1 AND 2 OK.

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