# SDR SWAA2023022005157

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2023
- Submitted: February 20, 2023
- Operation: Air carrier
- Aircraft: [N426WN](https://openairdocs.org/aircraft/N426WN), registered now
- Make and model: Boeing 737-7H4
- Registry model: [Boeing 737-7H4](https://openairdocs.org/model/boeing-737-7h4) (OpenAirDocs)
- Aircraft serial: 29830
- Aircraft time: 68,483 hours, 40,788 cycles
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Buss
- Condition: Fault Message
- Location: Zn 400 Nacelle/P
- Stage of operation: CL
- How discovered: 9
- Nature of condition: R
- Precautionary procedure: D, O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2023022005157

## Discrepancy

IN CLIMB AROUND FL 180; LOST #1 GEN; TR1; AND HALF THE AIRCRAFT ELECTRICAL SYSTEM. APU AND GROUND POWER WILL NOT POWER AIRCRAFT; NUMEROUS OTHER NON NORMAL INDICATIONS THROUGHOUT COCKPIT.<[01] RAN #1; #2 ENG; AND APU PER AMM 71-00-00 AND AMM 49-11-00. CYCLED AIRCRAFT POWER; UNABLE TO DUPLICATE. R/R'D #1 GCB (C801) & #1 BTB (C804) AT THE P91 PANEL PER AMM 24-21-41. OPS CK NORMAL.

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