# SDR IPXA2022062413841

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2022
- Submitted: June 24, 2022
- Operation: Air carrier
- Aircraft: [N573UP](https://openairdocs.org/aircraft/N573UP), registered now
- Make and model: Boeing 747-44AF
- Registry model: [Boeing 747-44AF](https://openairdocs.org/model/boeing-747-44af) (OpenAirDocs)
- Aircraft serial: 35662
- Aircraft time: 51,839 hours, 8,123 cycles
- System (JASC): [2431 · Battery Overheat Warning System](https://openairdocs.org/jasc/2431)
- Part: Battery
- Part number: NA
- Part serial: NA
- Condition: Inoperative
- Stage of operation: CR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2022062413841

## Discrepancy

ONE HOUR AFTER LEVEL-OFF, FL390 "BATT CHARGER APU" STATUS MESSAGE "APU BATTERY CHARGER FAIL (BCU-2)"<BR>MSG: 24099<BR>REF FIM 24-34-00-812-803

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