# SDR AALA202609248207

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2026
- Submitted: September 24, 2026
- Operation: Air carrier
- Aircraft: [N917AN](https://openairdocs.org/aircraft/N917AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29518
- Aircraft time: 72,346 hours, 30,349 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Controller
- Part number: 71211997101AC
- Part serial: 9652
- Condition: Inoperative
- Location: Zone 100
- Stage of operation: NR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202609248207

## Discrepancy

AIRCRAFT WAS GROUNDED: AUTO PRESSURIZATION AND ALTERNATE FAIL IN FLIGHT. QRH ACCOMPLISHED. AS A PRECAUTION EMERGENCY DECLARED AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED CPC #2 #2 IAW AMM 21-31-01-400-801.

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