# SDR 9JLA2023032244026

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2023
- Submitted: March 22, 2023
- Operation: Air carrier
- Aircraft: [N700LH](https://openairdocs.org/aircraft/N700LH), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500148
- Aircraft time: 8,234 hours, 5,201 cycles
- System (JASC): [2400 · Electrical Power System](https://openairdocs.org/jasc/2400)
- Part: Battery
- Part number: 501122803
- Part serial: 13860
- 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/9JLA2023032244026

## Discrepancy

THE FLIGHT CREW REPORTED THAT THE STANDBY GYRO BATTERY FAILED THE SELF-TEST. THE MAINTENANCE PROVIDER VERIFIED THE BATTERY HAD FAILED AND REPLACED IT WITH A REPAIRED UNIT. OPS CHECKS WERE GOOD. AIRCRAFT WAS RETURNED TO SERVICE.

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