# SDR CA120319003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Diamon DA 40
- Registry model: [Diamon DA 40](https://openairdocs.org/model/diamond-aircraft-ind-da-40) (OpenAirDocs)
- Engine: Lyc IO360M1A
- Propeller: Mtprop MTV12B
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire
- Condition: Shorted
- Location: Strobe
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120319003

## Discrepancy

(CAN) DURING THE INVESTIGATION OF AN INOPERATIVE STROBE LIGHT IN RT WING A SHORTED STROBE LIGHT WIRE WAS FOUND.  HIGH OUTPUT WIRE HAD SHORTED AGAINST THE END OF THE LIGHTNING PROTECTION CONDUIT AT OTBD END.  THE RUBBER CHAFE-PROTECTION AROUND THE END OF CUT TUBE WAS INSUFFICIENT IN CIRCUMFERANCE TO PREVENT CHAFING.  WIRE WAS BURNED PARTIALLY THROUGH AND CONDUIT PARTIALLY MELTED.   ROOT-CAUSE INVESTIGATION CARRIED OUT, DWGS ARE SUFFICIENT IN SHOWING THE ANTI-CHAFE RUBBER INSTALLATION, BUT AN AMENDED WO WILL BE ISSUED FOR FUTURE ACFT AND IN-HOUSE SWEEP CARRIED OUT. MFG CONTACTED AS WELL TO MAKE THEM AWARE OF THIS OCCURRENCE. FLEET BEING MONITORED FOR REPEAT OCCURRENCE`S .

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