Hillberg Helicopters

Hillberg Helicopters was an American aircraft manufacturer based in Fountain Valley, California and founded by Donald Gene Hillberg. The company specialized in the design and manufacture of helicopters in the form of kits for amateur construction.^[1]

Hillberg Helicopters

Company type	Privately held company
Industry	Aerospace
Founder	Donald Gene Hillberg
Defunct	after 1998
Fate	Out of business
Headquarters	Fountain Valley, California , United States
Products	Kit aircraft

The company offered a turbine conversion kit for the Rotorway Exec, using a Solar T62 auxiliary power unit engine to create the Hillberg Turbine Exec. The Hillberg EH1-01 RotorMouse was a single-seat helicopter with stub-wings. At least one example of each design was flown.^[1][2]

A Hillberg EH1-02 TandemMouse, two-seats-in-tandem version of the RotorMouse design was proposed and construction of a prototype commenced.^[1]

Aircraft

Summary of aircraft built by Hillberg Helicopters

Model name	First flight	Number built	Type
Hillberg Turbine Exec	1990s	at least one	Turbine conversion of the Rotorway Exec
Hillberg EH1-01 RotorMouse	1993	at least one	Turbine single-seat helicopter