# SDR VQMA907TX081724R0

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 17, 2024
- Submitted: August 19, 2024
- Operation: Air carrier
- Aircraft: [N907TX](https://openairdocs.org/aircraft/N907TX), registered now
- Make and model: Cessna 750
- Registry model: [Cessna 750](https://openairdocs.org/model/cessna-750) (OpenAirDocs)
- Aircraft serial: 7500201
- Aircraft time: 18,365 hours, 10,967 cycles
- System (JASC): [2432 · Battery/Charger System](https://openairdocs.org/jasc/2432)
- Part: Battery
- Part number: 99140586
- Part serial: 12201434
- Condition: Failed
- Location: Zone 100
- Stage of operation: CR
- How discovered: O
- Nature of condition: M, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VQMA907TX081724R0

## Discrepancy

ON SATURDAY AUGUST 11TH, 2024, CESSNA CITATION 750 (X) N907TX, SN: 750-0201 RECEIVED A #2 MAIN BATTERY OVERTEMP CAS MESSAGE.  THE FLIGHT CREW DIVERTED TO KATL AND DECLARED AN EMERGENCY.  UPON INSPECTION, NO EVIDENCE OF OVERHEATING WAS FOUND.  TECHNICIANS CHANGED THE #2 MAIN BATTERY ON MOUNTAIN AVIATION WORK ORDER MTN-10923.  THE BATTERIES USED ON THIS AIRCRAFT ARE NICAD AND ARE PRONE TO TEMP SENSOR FAILURES, CAUSING AIRCRAFT TO RECEIVE FALSE OVERTEMP INDICATIONS.

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