# SDR ASAA2023110145958

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 1, 2023
- Submitted: November 3, 2023
- Operation: Air carrier
- Aircraft: [N949AK](https://openairdocs.org/aircraft/N949AK), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 43356
- Aircraft time: 4,171 hours, 1,234 cycles
- System (JASC): [2421 · AC Generator-Alternator](https://openairdocs.org/jasc/2421)
- Part: Generator
- Part number: 28B5459STYLEA
- Part serial: 0421F5197
- Condition: Faulty
- Location: Apu
- Part time: 1,466 hours, 2,188 cycles
- Stage of operation: NR
- 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/ASAA2023110145958

## Discrepancy

AFTER APU START, UNABLE TO PUT APU GEN ON THE BUS. GROUNDED - YES. (RESOLVED ON W/O: 1976088 TASKCARD: N/R-00001 ) REMOVED AND REPLACED APU SGU IAW AMM 49-41-21. SGU PART NUMBER VERIFICATION WITH SEAMC PETER ACCOMPLISHED. 2CB PULLED, COLLARED AND RESET. OPS CHECK GOOD. THIS CLEARS MEL 49-11-01. PLACARDS REMOVED. REF L/P 60906860 FOR PLT FOR SGU FILTER CHANGE AND REF L/P 60906852 FOR REQ CSS MEL 49-99A. SEAMC SCOTT NOTIFIED.

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