# SDR AALA202601056648

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2026
- Submitted: January 5, 2026
- Operation: Air carrier
- Aircraft: [N844NN](https://openairdocs.org/aircraft/N844NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33212
- Aircraft time: 46,492 hours, 19,830 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Air Duct
- Condition: Blown
- Location: Zone 100
- Stage of operation: DE
- How discovered: V
- Nature of condition: S, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202601056648

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: DURING DECENT AT ALTITUDE 16000 FEET ON DECENT CABIN ALTITUDE WARNING LIGHT AND HORN SOUNDED. AIRCRAFT EMERGENCY LANDED SAFELY AT ABQ. FOUND BLOWN DUCK IN THE RIGHT PACK. REMOVED AND REPLACED BLOWN DUCT FROM ACM. ENGINE RUN AND LEAK CHECK NO LEAK FOUND. PER AMM 21-51-04.

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