# SDR ASAA2015110413640

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 4, 2015
- Submitted: November 6, 2015
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 27,907 hours, 8,542 cycles
- System (JASC): [2131 · Cabin Pressure Controller](https://openairdocs.org/jasc/2131)
- Part: Warning Light
- Condition: False Activation
- Location: Cabin Pressure
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015110413640

## Discrepancy

NOTICED ON PREFLIGHT AUTOFAIL LIGHT ILLUMINATED.  ACFT GROUNDED.  NR 1 PRESSURE CONTROLLER LOGGED FAULT 35 IN EXISTING FAULTS.  PERFORMED FIM 21-31, TASK 824 AND CPC BITE PROCEDURE ON BOTH PRESSURE CONTROLLERS.  SYSTEM OPS NORMAL, NO CURRENT FAULTS, AUTO FAIL LIGHT IS EXTINGUISHED.  GROUND VERIFICATION SUCCESSFUL.

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