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The Heart of the Prop Jet Bonanza
First
introduced in the early 1960s, the Allison Model 250 is the world's most
popular and reliable gas turbine powerplant in its class. To date, more
than 26,000 of these workhorses have been delivered to satisfied customers
worldwide, logging a staggering 100 million-plus flight hours. This engine
is currently used in nearly 50 different military and civilian applications.
It has proven to be THE premier, light turbo-prop engine of all time. As
proof of its reliability, the Allison has a 3500 hour TBO. The turbine
is flat-rated to 420 SHP for takeoff and climb, and gets you to the best
cruise operating altitudes of 10,000 to 13,000 feet in about five minutes.
On average, turbine engines fail every 115 years! One physicist rates this engine to be on the order of two magnitudes more reliable than piston engines. That's 100 times more reliable.
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The first thing apparent when you start the turbine engine is the smoothness. Fatigue due to constant vibration is never a problem. During your flight, you will notice a remarkable reduction in noise to only 67 decibels. You can actually carry on a conversation in normal tones. You will arrive refreshed, ready to work or to play. |
This increase of 50 to 60 knots over a piston A-36 is a huge speed increase that comes in handy even on the shortest of trips.
2,500 Feet Per Minute Climb To 10,000 Feet!
This is one of the most exciting performance increases of the Prop Jet Bonanza. On a good day, a piston A-36 will climb only 500 to 600 feet per minute (fpm). The Prop Jet Bonanza will climb over 3,000 fpm initially, and then 2,500 fpm up to 10,000 feet any day of the week! This feature can be startling to the unprepared, as the aircraft is in a 25 nose high angle! Truly remarkable.
The Fastest STOL Aircraft In The World!
This category is by far the most staggering. The piston A-36 requires 1900 feet to take off, and 960 feet to land. This is not mind blowing like the Prop Jet Bonanza, which will take off in only 580 feet, and land in an unbelievable 320 feet. Imagine making the first taxiway turnoff every time. This opens up the usefulness of this aircraft for short, unimproved runways you would never consider using in any other airplane.
1000 Mile Range Capability At 220 Knots True Airspeed!
The piston A-36 will take you only 732 nautical miles at only 170 knots TAS, for a trip time of over 4.5 hours. The Prop Jet Bonanza will take you 904 nautical miles (1039 statute miles) at 220 knots and will get there in only 4.4 hours. Its range makes this aircraft a true work horse that will cut out countless hours waiting at the intermediate fuel stop.
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