Why does nobody talk about intermittent faults on the G1000 autopilot servo?

I just spent a full week, 40 hours of my life, chasing a single autopilot disconnect issue on a Cessna 182. The pilot said it would randomly drop out for a second and then reconnect. Everyone in the shop said it was probably a bad connector or a software glitch, the usual suspects. I swapped the servo, checked every pin on the connector, and ran the diagnostic a dozen times. The real problem? A tiny, almost invisible crack in the flex circuit inside the control head itself. It only opened up when the panel got warm after an hour of flight. I finally found it by wiggling the harness with a heat gun on low. That one little crack cost the owner over 3 grand in labor and downtime. Has anyone else had a G1000 issue that just would not show up on the ground?

3 comments

3 Comments

garcia.miles5d ago

Flex circuits are the worst for hiding heat-related breaks.

lee_barnes705d agoTop Commenter

Wouldn't rigid boards hide those breaks even better?

finley_walker573d ago

Three grand seems steep for a crack you found with a heat gun and some wiggling. You sure you didn't pad the bill a bit to cover your own learning curve?