# SDR SWAA2024040570941

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 4, 2024
- Submitted: April 5, 2024
- Operation: Air carrier
- Aircraft: [N7750A](https://openairdocs.org/aircraft/N7750A), registered now
- Make and model: Boeing 737-7BD
- Registry model: [Boeing 737-7BD](https://openairdocs.org/model/boeing-737-7bd) (OpenAirDocs)
- Aircraft serial: 36716
- Aircraft time: 50,818 hours, 26,330 cycles
- System (JASC): [4997 · APU System Wiring](https://openairdocs.org/jasc/4997)
- Part: Module
- Part number: UNKNOWN
- Condition: Arced
- Location: Apu
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA2024040570941

## Discrepancy

FOR 2 OR 3 MIN ON DECENT AN ELECTRICAL ARCING SOUND EMINATED FROM THE OVERHEAD PANEL IN THE VICINITY OF THE FUEL & BUS TRANSFER PANELS. NO STATIC ELECTRICITY NO STATIC AND VISIBLE ON WINDOWS. OZONE SMELL NO ACCOMPANY SOUND<[01] C/W SMOKE/FUMES IN CABIN CONDITIONAL INSPECTION PER AMM 05-51-56 AND FIM TASK 21-00 TASK 806. R&R A/C SYSTEM GENERATOR & APU MODULE PER AMM 24-21-51 AND FUEL SYSTEM MODULE PER AMM 28-22-43

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