# SDR CA100303005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2010
- Submitted: January 4, 2011
- Operation: Air carrier
- Make and model: Frchld SA227DC
- Aircraft time: 6,497 hours
- Engine: Garrtt TPE33112UHR
- System (JASC): [2460 · DC Power Distribution System](https://openairdocs.org/jasc/2460)
- Part: Switch
- Part number: 8781K11
- Condition: Burned
- Location: Buss Tie
- Stage of operation: CR
- How discovered: V
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA100303005

## Discrepancy

(CAN) RADIO`S, HSI AND TCAS ON LT SIDE ONLY FLASH ON ANS OFF AND FAIL. SOMETIMES OCCUR WHEN BLEED HEAT IS SELECTED ON/OFF. WHEN MX WENT TO LOOK AT IT THEY COULD DETECT AN ODOR OF ELECTRICAL BURNING AND FOUND THE LT ESSENTIAL BUSS TIE SWITCH WAS CRACKED AND BURNED AT A ATTACHMENT LUG. REPLACED SWITCH AND AIRCRAFT RELEASED TO SERVICE.  THIS SDR RELATES TO THE FOLLOWING SDR 20100303004 WHICH ALSO RELATES TO 2 OTHERS AS INDICATED IN THE MENTIONED PAST SDR.

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