# SDR QMLA2012121012189

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2012
- Submitted: December 11, 2012
- Operation: Air carrier
- Aircraft: [N145DU](https://openairdocs.org/aircraft/N145DU), registered now
- Make and model: Bolkms BK117C2
- Aircraft serial: 9421
- Aircraft time: 236 hours, 586 cycles
- Engine: Tmeca ARRIEL1E2
- Engine time: 236 hours
- System (JASC): [3340 · Exterior Lighting](https://openairdocs.org/jasc/3340)
- Part: Switch
- Part number: TS0250
- Condition: Shorted
- Location: Search Light
- Part time: 236 hours, 586 cycles
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/QMLA2012121012189

## Discrepancy

DURING TAKEOFF, SMELLED ELECTRICAL BURNING, NO SMOKE IN AIRCRAFT.  RETURNED TO BASE.  FOUND ODOR TO BE COMING FROM SWITCH FOR CONTROLLABLE IR SEARCHLIGHT.   SWITCH IS MOUNTED IN COLLECTIVE.

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