SDR 99ZZZX308

Service difficulty report · Indicator · Cessna 172R

Difficulty date: October 28, 1998
Submitted: March 26, 2000
Operation: General aviation
Aircraft: N101FV
Make and model: Cessna 172R
Aircraft serial: 17280551
System (JASC): 3457 · Global Positioning System
Part: Indicator
Part number: KLN89B
Condition: Failed
Location: Gps
Component: King
Stage of operation: NR
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

A DIODE INSIDE THE GPS HAD SHORTED OUT, BUT DUE TO THE MOUNTING TECHNIQUE OF THE BREAKER PANEL THE BREAKER DID NOT TRIP. THUS, THE GPS STILL HAD POWER, CONTINUING TO BURN THE DIODE. THIS CAUSED SMOKE IN COCKPIT ALONG WITH THE ACCOMPANYING SMOKE SMELL.

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