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Maverick TwinJet 1500

Bob Bornhofen was retired when he got into the aviation business, and had no aviation background. He wondered why he couldn't buy a personal jet, and in 1998 he decided to create one. Bornhofen has been funding much of the project out of his own pocket.

To be marketed as a kit, the Twinjet has a pre-preg eglass composite airframe with carbon fiber control surfaces and empennage.

The TwinJet was not certified because it uses two converted surplus GE-T58 military helicopter engines (overhauled and zero-timed).

The TwinJet was designed in anticipation of the FJX-2 engine, which was being developed under the General Aviation Propulsion program. The FJX-2 was going to be a new generation turbofan engine producing 700-800 pounds of thrust.

When delays occurred for that engine, Bob Bornhofen elected to use the T58 engines so he wouldn't slow the TwinJet development.

Twinjet 1500 characteristics

ManufacturerMaverick Air
DesignerBob Bornhofen
TypeTwin light jet aircraft
First flight4 august 1999
Nb. Built3

Power plant

Max. ratings  334 kg770 lbs


Span10,21 m33 ft 6 in
      with tip tanks10,52 m34.5 feet
Length8,69 m28 ft 6 in
Height2,74 m9 ft
Wing aspect ratio7.5 
Aereas (wings, cross)13,94 m²150 ft²


Empty1180 kg2600 lb
Max T.O2268 kg5000 lb
Max wing loading162,7 km/m²33.33 lb/sq ft


Vne - Max speed770 km/h480 mph
Vno - Max.crus. speed644 km/h400 mph
Stalling speed145 km/h90 mph
Max. rate of climb1067 m/min3,500 ft/min
Service ceiling6095 m20,000 ft
Range1852 km1000 n miles
Range with tip tanks2407 km1300 n miles
Landing speedkm/hmph
T.O distance to 50 ft671 m2,200 ft
Landing distance from 50 ft607 m1990 ft

TwinJet Built

Three planes have been put in the air. The first prototype was flight tested to about 370 knots during a series of tests to determine if the aircraft had any major certification-related problems. 

Two are still flying. One is not; it was involved in an incident.

Prototype N750TJ.

Serial number : 1,

First fligth 4 august 1999.

Public debut at EAA Air venture, Oskosh, August 2000.

Destroyed on Jan. 24, 2003 in Melbourne, Florida


Serial number : 2,

Owned by Mike Seavall (Longmont, COLORADO).

It was built from a Maverick Air's kit . Two years were spent to build it.


Serial number : 3

Professionaly built in 2003.

It's fitted with 2 T850 engines