# SDR ASAA2017102722349

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2017
- Submitted: October 30, 2017
- Operation: Air carrier
- Aircraft: [N596AS](https://openairdocs.org/aircraft/N596AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35688
- Aircraft time: 36,215 hours, 11,043 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Condition: Malfunctioned
- Location: Apu
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017102722349

## Discrepancy

APU STARTS, BLEED AIR AVAILABLE BUT APU GENERATOR WILL NOT COME ONLINE NO VOLTS OR FREQUENCIES.  ACFT GROUNDED.  INTERROGATED THE APU GENERATOR CONTROL UNIT IAW FIM 24-21, TASK 801.  BITE TEST PASSED,  NO FAULTS. IAW FIM 24-21, TASK 820.  PERFORMED APU OPS TEST FOR THE AC GENERATOR SYS & AMM 24-21-00-700-803.   APU GENERATOR OPS TESTED NORMAL, NO FAULTS.

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