# SDR ASAA2014122310044

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2014
- Submitted: December 26, 2014
- Operation: Air carrier
- Aircraft: [N560AS](https://openairdocs.org/aircraft/N560AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35179
- Aircraft time: 31,884 hours, 9,722 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning Message
- Condition: False Activation
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2014122310044

## Discrepancy

PRESSURIZATION MODE CONTROL SHOWED "AUTOFAIL" AND "ALTN" LIGHTS IN AUTO MODE DURING PREFLIGHT.  ACFT GROUNDED.  NR 2 PRESSURE CONTROLLER LOGGED GROUND FAULT SEL PANEL FAULT.  NO HISTORY LAST 30 DAYS.  PERFORMED FIM 21-31, TASK 803 & FAULT CLEARED.  GROUND FUNCTIONAL CHECK GOOD, REF FIM 21-31, TASK 801.

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