# SDR 98ZZZX359

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 1, 1997
- Submitted: March 26, 2000
- Operation: General aviation
- Filed by: [Embry-Riddle Aeronautical University Inc, repair station N3XR816N](https://openairdocs.org/faa-repair-station/N3XR816N/embry-riddle-aeronautical-university-inc.md) (OpenAirDocs)
- Aircraft: [N403ER](https://openairdocs.org/aircraft/N403ER), registered now
- Make and model: Cessna 172R
- Registry model: [Cessna 172R](https://openairdocs.org/model/cessna-172r) (OpenAirDocs)
- Aircraft serial: 17280245
- System (JASC): [3310 · Flight Compartment Lighting](https://openairdocs.org/jasc/3310)
- Part: Dimmer Assy
- Part number: 15703014
- Condition: Miswired
- Location: Inst Lights
- Part time: 34 hours
- Stage of operation: NR
- Nature of condition: B, W
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/98ZZZX359

## Discrepancy

DURING A TRAINING FLIGHT, THE CREW SMELLED A BURNING SCENT.  AFTER FOLLOWING THE EMERGENCY CHECKLIST, THEY WERE GOING TO LAND OFF-FIELD.  THE SMELL DIMINISHED AND THEY PROCEEDED TO X-47.  DURING THE FOLLOWING INSPECTION, A RESISTOR WAS FOUND BURNED IN HALF ON THE DIMMER ASSY.  IT WAS DISCOVERED THE UNIT IS WIRED INCORRECTLY.  IT APPEARS TO BE A FLEET PROBLEM.  AFTER A CALL TO CESSNA, DISABLED THE DIMMERS IN THE ENTIRE FLEET.  SB 97-33-01 APPLIES.

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