What was found
ON PREFLIGHT THE PILOT NOTICED THE #2 AVIONICS FAN WAS WAS NOT COMING ON AND SMELLED A BURNING SMELL INSPECTED SYSTEM AND FOUND THE AVIONICS MASTER SWITCH P/N S3443-1-1 WAS DEFECTIVE INSTALLED NEW SWITCH.
- Difficulty date
- February 12, 2020
- Submitted
- February 12, 2020
- Operation
- General aviation
- Aircraft
- N180SU
- Make and model
- Cessna 172S
- Aircraft serial
- 172S12161
- Aircraft time
- 946 hours
- System (JASC)
- 2460 · DC Power Distribution System
- Part
- Master Switch
- Part number
- S344311
- Condition
- Defective
- Location
- Avionics
- Part time
- 946 hours
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- B
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.