# SDR ASAA2019062629830

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 26, 2019
- Submitted: July 5, 2019
- Operation: Air carrier
- Aircraft: [N529AS](https://openairdocs.org/aircraft/N529AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35198
- Aircraft time: 35,747 hours, 10,677 cycles
- System (JASC): [4960 · APU Controls](https://openairdocs.org/jasc/4960)
- Part: Unknown
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019062629830

## Discrepancy

APU BITE TEST SHOWS MAINT MSG 49-11019: DC POWER LOSS SHUTDOWN POWER INTERRUPT. GROUNDED - YES. PERFORMED FIM 49-10 TASK 801 FOUND FAULT TO BE INTERMITTENT. APU START AND OPERATIONS CHECK NORMAL REF AMM 49-11-00.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.