# SDR AALA202109208677

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 17, 2021
- Submitted: September 20, 2021
- Operation: Air carrier
- Aircraft: [N963AN](https://openairdocs.org/aircraft/N963AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29543
- Aircraft time: 59,349 hours, 24,401 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Selector
- Part number: 2193301AD
- Part serial: 1695811
- Condition: Failed
- Location: Zone 200 - Fuse
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202109208677

## Discrepancy

AIRCRAFT WAS GROUNDED: EMERGENCY LANDED INTO DEN DUE TO AUTO FAIL ILLUMINATED ON PRESSURIZATION PANEL DURING DESCENT. REPLACED NUMBER 1 CABIN PRESSURE CONTROLLER PER AMM 21-31-01.

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