# SDR ASAA2020021863200

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2020
- Submitted: February 19, 2020
- Operation: Air carrier
- Aircraft: [N402AS](https://openairdocs.org/aircraft/N402AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41189
- Aircraft time: 28,637 hours, 9,272 cycles
- System (JASC): [4970 · APU Indicating System](https://openairdocs.org/jasc/4970)
- Part: Fault Light
- Condition: False Activation
- Location: Apu
- 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/ASAA2020021863200

## Discrepancy

APU FAULT LT ILLUMINATED ON 1ST ATTEMPT AT 340 APU FAULT LT ILLUMINATED ON 2ND ATTEMPT AT 360 3RD ATTEMP AT 340 - PASSED. GROUNDED - YES. APU BITE SHOWS MAINT MSG 49-41010 IN HISTORY, APU OPS CHECK GOOD ON GROUND.

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