# SDR ASAA2019092130776

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2019
- Submitted: September 23, 2019
- Operation: Air carrier
- Aircraft: [N472AS](https://openairdocs.org/aircraft/N472AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60580
- Aircraft time: 17,907 hours, 5,740 cycles
- System (JASC): [4970 · APU Indicating System](https://openairdocs.org/jasc/4970)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: CR
- 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/ASAA2019092130776

## Discrepancy

FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT AT FL 340. GROUNDED - YES. ACCOMPLISHED FIM 49-30 TASK 804 INITIAL EVAL PASS. MSG 49-31018 WAS SHOWING BEFORE ACCOMPLISHING THE FIM TASK. AFTER APU START AND SHUTDOWN, NO MSG WAS SHOWING FOR THE LAST APU CYCLE. OPS OK.

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