chuckwn
Well Known Member
Flying along fat dumb and happy when all the radios started flashing off and on, eventually failing off (Day VMC fortunately). This drama was accompanied by a little electronic smoke smell. Mostly I was seeing $$$$ as the GTN650 was subjected to this power cycling event.
Trouble shooting determined that the avionics circuit breaker/switch had failed in the open position. Luckily all the $$$$ avionics were not damaged.
This CB/switch is about 8 years old and has maybe 500 hours of use. Interestingly the failed switch is the newest of a whole plane full of these CB/Switches. The older ones have 2550 hours over 19 years without problems. The older trouble free switches were made in Mexico, the failed one was made in China.
I found this online:
https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSAIB.nsf/dc7bd4f27e5f107486257221005f069d/469f896b8a88d2a886257b2d0066ed6c/$FILE/CE-13-22.pdf
Attached are some pictures of the culprit.
Trouble shooting determined that the avionics circuit breaker/switch had failed in the open position. Luckily all the $$$$ avionics were not damaged.
This CB/switch is about 8 years old and has maybe 500 hours of use. Interestingly the failed switch is the newest of a whole plane full of these CB/Switches. The older ones have 2550 hours over 19 years without problems. The older trouble free switches were made in Mexico, the failed one was made in China.
I found this online:
https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgSAIB.nsf/dc7bd4f27e5f107486257221005f069d/469f896b8a88d2a886257b2d0066ed6c/$FILE/CE-13-22.pdf
Attached are some pictures of the culprit.
Attachments
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