# SDR AALA202603117626

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2026
- Submitted: March 11, 2026
- Operation: Air carrier
- Aircraft: [N862NN](https://openairdocs.org/aircraft/N862NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30905
- Aircraft time: 44,928 hours, 19,240 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Condition: Inoperative
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: B, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202603117626

## Discrepancy

AIRCRAFT WAS GROUNDED: AT 360 WE RECEIVED CABIN ALTITUDE AND IMMEDIATELY RAN THE QRC. THE CABIN WAS UNCONTROLLABLE IN MANUAL MODE. WE DEPLOYED THE OXYGEN MASKS WHILE EXECUTING THE CHECKLIST. AIRCRAFT DIVERTED TO TULSA AND FLIGHT LANDED SAFELY WITHOUT INCIDENT. **SUPPLEMENTAL REPORT FOR SDR AALA202603097626 SUBMITTED BY DFW ON 3/8/26 **(CLOSED)** MAINTENANCE REPLACED THE #1 CABIN PRESSURE CONTROLLER IAW AMM 21-31-01.

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