# SDR ASAA2020043032692

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2020
- Submitted: April 30, 2020
- Operation: Air carrier
- Aircraft: [N508AS](https://openairdocs.org/aircraft/N508AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35691
- Aircraft time: 44,523 hours, 13,218 cycles
- System (JASC): [4940 · APU Start/Ignition System](https://openairdocs.org/jasc/4940)
- Part: Starter Gen
- Part number: 28B5459STYLEA
- Part serial: 58B1300
- Condition: Inoperative
- Location: Apu
- Part time: 8,051 hours, 13,930 cycles
- 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/ASAA2020043032692

## Discrepancy

APU WILL NOT START NO ROTATION. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR PER B737-800 AMM 49-41-21. LEAK AND OPS CHECK GOOD. CLEARS MEL 49-1B.

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