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Pulling mixture is such a dumb idea it's not even funny.

These engines are designed to be shut down and feathered…otherwise they could not get FAA certification. The difference between “zero thrust” and a feathered engine, in drag alone, is HUGE. The airplane flys much better with one shut down and feathered than it does at the mystical zero thrust. Properly done, shutting one down is just no big deal. If you don’t practice it now and then, and land with it shut down and feathered, you are just kidding yourself about your proficiency…thus entering the realm of an accident looking for a place to happen.

I have owned several multi engines and logged over 1,000 hours in them. Every single one I have shut down and feathered an engine during my check out. Why? Because I want to see how the aircraft handles and is controlled with one engine shut down. It could happen on an instrument approach at minimums any time. If you are worried about the engine not restarting during a test shut-down in VFR conditions near the airport, you probably shouldn't be a multi pilot. I had to shut down an engine on my multi checkride, and it wouldn't restart due to a starter failure so I continued the checkride and landed single engine. Of course the video quality could be better, but I am not in the business of creating professional youtube videos. It was something I had on my computer and thought it was worth posting.

Brian Herron Thanks for the reply. I appreciate the input. Although I am no long flying, it's always been my understanding that the GTSIO-520s need to be totally babied if you want to have any hope of reaching TBO. In your case, a new purchase, I agree that shutting down an engine in flight is probably something you want to do. As to the videos, there are an awful lot of private pilots, I.e., airplane owners that record their flying and share it. We, for whatever reason, are not flying any more, finances, medical, or just starting out. This group of people just love TH-cam videos on just about anything where we get to 'ride along.' Obviously 'big names' like Flight Chops, Steveo1Knevo, Premier One Driver are a couple, I like Baron Pilot and Jerry W and Mr. Aviation 101 as well. Chops is the only "professional" video maker, but all have good, solid foundation of viewers. So, don't be adverse to sticking a couple of more cameras and wiring up some audio for them. I guarantee your viewership will climb, and you'll probably make a lot of people happy for another Aviation channel they can watch. Fly safe and an enjoy the Golden Eagle!

Gary - you seem to have the common stigma of GTSIO-520 unfamiliarity only by what you read from people who don't have any time in a 421. I can tell you this is a gentleman's plane, and it doesn't respond to jockey inputs. Nor does it warrant Keyboard pilots commenting on something they have no experience with. We moved to turbine now, but operated the 421B for years with 0 issues, including shutting it down and restarting mid air on flight reviews, in addition to SIMCOM courses in the sim.

Ga

It's the standard TD-50KV kit. I added a second PD-108-BC drum pad. No other modifications.