# SDR VNAA0207043

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 29, 2002
- Submitted: August 5, 2002
- Operation: Air carrier
- Aircraft: [N442JS](https://openairdocs.org/aircraft/N442JS), registered now
- Make and model: Dorner DO328100
- Aircraft serial: 3060
- Aircraft time: 17,631 hours, 15,301 cycles
- Engine: Pwa PW119B
- Propeller: Hartzl HDE6C3B
- System (JASC): [3100 · Indicating/Recording System](https://openairdocs.org/jasc/3100)
- Part: Power Supply
- Part number: 501122803
- Part serial: 7167
- Condition: Failed
- Part time: 16,775 hours, 14,622 cycles
- Stage of operation: TX
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/VNAA0207043

## Discrepancy

THE CREW REPORTED THAT THE EMERGENCY BACK UP BATTERY WOULD NOT TEST.  MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY POWER SUPPLY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 31-00-00.  OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.