Engine quit.

carb icing. Happen to me in S Cal once Cool air Sunny day.

We have had a few inflight engine out and one actual on the highway landing at KTQH Tahlequah Oklahoma.  The general consensus is carburetor ice. Due point and temperature have been close around here. Glad you are ok.

Very interesting. My mechanic will be out this week to see what is going on. Yes, it was a little scary. Thankfully there was a big field right below me, so I had time to see what the problem might be.

I can imagine how disconcerting that whole experience was for you. I'm sure we're all really glad that you figured out how to get the engine restarted!

I've got an old key switch that seems to work fine, but after reading about problems with them, I've kept a small wire cutter in a side pocket and I know *exactly* where the p-lead wires are so I can cut them if the ignition stops working for no apparent reason. It helps that my switch is installed near the bottom of the control panel!

I wish we could re-wire the ignition to use two simple toggle switches for the magnetos, like pretty much every twin engine airplane. It's cheaper, simpler, and if someone really wants to steal a plane, the the ignition key isn't stopping them anyway. 

Thanks for the suggestions. Thinking back, when I did the run up, checking the mags, when I turned the key, it did seem different. Can’t say why, but did seem different. Everything else was normal, so I didn’t give it another thought. Glad it did restart, but not a good feeling.

I too would suspect the key switch. It shouldn’t quit like that, and cycling the key switch off/on, points to grounding & ungrounding the mags.

I have no clue as to your alternator issue. Is an audible warning device part of your alternator upgrade? My PlanePower alternator upgrade only has a warning light. I guess you could have it wired up to a buzzer.