See for Yourself

PLEASE LOOK AT THE POWER AND FUEL FLOWS OF THIS GTSIO-520-L 421C ENGINE; 31.5″ MP, 1720 RPM’s, 25′ LEAN OF PEAK, 17 GPH TRUING 200 KTAS AT 14,500 WITH CHT’S FROM 310-345’F. CRUISING WESTBOUND OVER NEVADA LAST WINTER GETTING 185 KTS GS WHILE SHOWING 5.59 NMPG.

Our Advanced Techniques Save Fuel

Improve engine life and lower all your associated costs, stop looking at 400′ CHT and above in the climb, sign up for our building block course and do it at home.  Get your shop up to speed and teach them how to get it right for no additional cost, in fact it will save you even more!

Combined with our patented speed covers, this will save you up to 20% on your fuel used, if you do not believe this look at the photo above again!
Premiere-Aviation helped me to lower my engine temperatures while saving me 10 GPH, my oil consumption has dropped, my oil reports have shown much less metal and my range has gone up amazing! The attention to detail with baffling and airflow control surpasses any maintenance shop and I had been to the big shop in Texas for solving the same problem, which they could not figure out. I use to have to flow an extra 5 GPH on takeoff, climb and cruise, now I am at a lower than book fuel flows, getting better power as I run closer to the best power on takeoff and climb. In cruise the have tuned my GAMI’s to 0.2 GPH and I can fly in cruise at peak, or rich/lean of peak whenever I want to. I have a 1977 414 with RAM VII.

-David M

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Peter Danto helped me outfit my 1981 421C after Premiere helped me find the best one for my needs. I tuned the engines and sealed the baffles which allowed me to go from 42 gallons an hour to 38 gallons an hour same power ROP. I can new climb at 130 KIAS up to FL230 and get 220 KTAS easily at 61% power. I love the high altitude climb, better block speed and fuel savings. Our 421C family traveler is now a pleasure in all conditions. Premiere’s training has given me a better understanding of the whole airplane and my wife compliments me on my confidence and smoothness in all phases of flight.

Jonathan B

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My 421C with winglets gained 12 KTAS at FL250, I now am called Conquest N**** by ATC! The Speed Covers and winglets truly do amazing things at altitude. The Speed Covers are the best value in Twin Cessna modifications!

Gerald H

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