# SDR 9JLA2023042036084

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2023
- Submitted: April 20, 2023
- Operation: Air carrier
- Aircraft: [N750MF](https://openairdocs.org/aircraft/N750MF), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500271
- Aircraft time: 3,480 hours, 7,981 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- Part: Battery
- Part number: 501122803
- Part serial: 5115
- Condition: Failed
- Stage of operation: IN
- How discovered: O
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9JLA2023042036084

## Discrepancy

THE FLIGHT CREW REPORTED THE EMERGENCY STANDBY BATTERY FAILED TO TEST DURING PREFLIGHT CHECKS. THE MAINTENANCE PROVIDER TROUBLESHOT AND REMOVED THE EMERGENCY STANDBY BATTERY AND INSTALLED AN INSPECTED / TESTED STANDBY BATTERY. OPS CHECKS WERE PERFORMED AND FOUND SATISFACTORY. THE AIRCRAFT WAS RETURNED TO SERVICE.

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