# SDR ASAA2018053104854

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2018
- Submitted: May 31, 2018
- Operation: Air carrier
- Aircraft: [N477AS](https://openairdocs.org/aircraft/N477AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 40716
- Aircraft time: 11,905 hours, 3,891 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning Message
- Condition: False Activation
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018053104854

## Discrepancy

AUTO FAIL LIGHT ILLUMINATED DURING TAXI OFF RUNWAY.   ALTERNAT LIGHT ILLUMINATED.  ACFT GROUNDED.  PERFORMED FIM 21-31 TASK 827.  AUTO FAIL LIGHT ON FAULT ISOLATION. AUTO FAIL LIGHT EXTINGUISHED, GROUND VERIFICATION SUCCESSFUL.

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