# SDR ASAA2019062329827

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2019
- Submitted: July 23, 2019
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 45,032 hours, 13,516 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Converter
- Part number: 1152466250
- Part serial: 115246602315
- Condition: Failed
- Location: Apu Starter Gen
- Part time: 24,904 hours, 8,044 cycles
- Stage of operation: TX
- 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/ASAA2019062329827

## Discrepancy

APU GEN FAILED DURING PUSHBACK. GROUNDED - YES.  REMOVED AND REPLACED APU STARTER GENERATOR IAW AMM 49-41-21. COMPLIED WITH FIM 24-21 TASK 820. FOUND BAD START CONVERTER UNIT. REMOVED AND REPLACED START CONVERTER UNIT AND OPS CHECK GOOD IAW AMM 49-41-61 APU BITE CHECK GOOD IAW AMM 49-61-00-700-801. APU START GENERATOR INSTALLATION TEST GOOD PER AMM 49-41-21-400-801.

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