The Heldeberg Convertible, also called the Blue Heron Convertible, is an American powered parachute, that was designed and produced by Heldeberg Designs of Altamont, New York.[1]
The HeldebergConvertible, also called the Blue Heron Convertible, is an American powered parachute, that was designed and produced by Heldeberg Designs...
The Heldeberg Marathon, also called the Blue Heron Marathon, is an American powered parachute, that was designed and produced by Heldeberg Designs of Altamont...
Heldeberg Designs was an American aircraft manufacturer, headquartered in Altamont, New York. The company specialized in powered parachutes. Originally...
The Heldeberg Spirit 103, also called the Blue Heron Spirit 103, is an American powered parachute, designed and produced by Heldeberg Designs of Altamont...