# SDR ASAA2019010227643

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2019
- Submitted: January 4, 2019
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 47,582 hours, 14,061 cycles
- System (JASC): [2130 · Cabin Pressure Control System](https://openairdocs.org/jasc/2130)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- 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/ASAA2019010227643

## Discrepancy

AUTO FAIL LIGHT ILLUMINATED WITH GREEN ALT ON. CYCLED TO ALT AND BACK TO AUTO POSITION AND LIGHT (AUTO FAIL) WENT OUT. GROUNDED - YES. NR 1 DCPC INOP. FAULT CODE - 043 - "CONT LRU FAULT". ACCOMPLISHED FIM 21-31 TASK 824. FOUND 1 FAULT OCCURRENCE. ACCOMPLISHED PRESS SYSTEM GROUND TEST REF AMM 21-31-00-700-802. OPS CK GOOD AND CONTROLLER RESET. GROUND VERIFICATION SUCCESSFUL.

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