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@@RyanFerris-r8i originally it was approved to FL310, but when RVSM was implemented the builder lowered it to FL280. We've only had it up to FL230. It is doing about 320 TAS at 36 GPH. Upper design limit is .56 Mach, so theoretically that would be the limit at FL280.

@@tobberfutooagain2628 yep, Walter M601D

@@jugshangar573 - thank you. Just comparing performance numbers… did you do the conversion?

@@tobberfutooagain2628, no the builder of the plane initially had a V8 engine as the powerplant. He did the Walter conversion about a year or so after that. The conversion happened many years before I purchased the plane.

@@jugshangar573 - 👍🏻

Turbines are different than piston engines. Piston engines will ingest the fuel/air mixture together basically via a siphon effect. Turbine engines suck in a lot of air but they don't mix the fuel with it ahead of time. The fuel actually needs to be injected into the combustion chamber under pressure. The engine-driven fuel pump is a gear-type fuel pump which requires a certain amount of head-pressure to operate effectively without cavitating. With my specific engine, operation is not guaranteed above approximately 9,000 ft without the Boost pump providing positive pressure to the engine-driven pump. I rarely, if ever fly that low, so out of habit and procedure I leave the electrically driven boost pump on at all times

It all depends on which tradeoffs you're willing to accept. I plan at about 8.1 MPG (36 GPH) at max power which is approx. 290 TAS at 17,500'. A typical flight of 283 NM takes about 57 minutes and burns about 35 gal of JET A. In a Cherokee the same flight at 120 TAS would take 2:22 and burn about 22.4 gal of AVGAS. The TurboProp gets me there almost 1:25 quicker and only costs $19 more in fuel. (35 gal x $3.70 = $130 Jet A as opposed to 22.4 gal x $4.95 = $111 AVGAS). If you run the numbers for an SR22T at 193TAS & 16.5GPH LOP it'll burn about 26.3 gal for the same trip which is $9 less in fuel and arrives 30 minutes after mine. Hope that helps.

Those are the numbers I was looking for. I assumed it would be very close when considering speed. I also assume this only works on longer flights. 50 mile hamburger run would not fair so well with turboprop.

@@dvsmotions Def NOT! especially since my hangar is 50 miles away. :D Easier math I use is 6 hours of interstate driving equals 1 hour of flying.

Thanks! Hand flying was a necessity when I first got the plane as the previous autopilot was not very useful. Even with the new autopilot I'm never in a rush to turn it on unless necessary.

'Best laid plans...' Should've said up to 800' if there's any hiccups. Thanks for watching!

Yep

That's pretty much why we got it. Believe it or not it saves us both time and money.

It was!