# SDR ASAA2018101726507

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 17, 2018
- Submitted: October 18, 2018
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 12,854 hours, 4,330 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: CR
- 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/ASAA2018101726507

## Discrepancy

IN CRUISE FLIGHT AT FL 350, PRESSURIZATION "AUTO FAIL" AND "ALTN" LIGHTS ILLUMINATED. ACCOMPLISHED CHECKLIST. OPS OK WITH ALTN MODE. GROUNDED - YES. ACCOMPLISHED FIM 21-31 TASK 827. AUTO FAIL RECOVERED. REPAIR CONFIRMATION TEST GOOD REF FIM 21-31 TASK 801 DCPC BITE. NO PREVIOUS HISTORY.

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