# SDR ASAA2023062043659

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 20, 2023
- Submitted: June 23, 2023
- Operation: Air carrier
- Aircraft: [N977AK](https://openairdocs.org/aircraft/N977AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43391
- Aircraft time: 3,694 hours, 1,116 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 28B5459STYLEA
- Part serial: 219F3900
- Condition: Faulty
- Location: Apu
- Part time: 1,497 hours, 2,227 cycles
- Stage of operation: TX
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023062043659

## Discrepancy

APU FAULT AND SHUTDOWN ON GROUND AFTER LANDING. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 49-40-00-810-818 STEPS A.-C.(5)(C) AND IFIM TASK 49-40-00-810-805 STEPS A.-C.(5)(C). NO DEBRIS ON MAGNETIC PLUG, APU ROTATES FREELY, WIRING CHECK OK. REPLACED STARTER GENERATOR UNIT. OPS/LEAK CHECK OK. REF. B737-9  AMM 49-41-21-400-8011.

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