Building aircraft? In Seven Hills? Even in the 1970s?? Strange but true.
The idea of plunging into the yet commercially untested activity of aircraft production came to Belgiorno-Nettis and to Salteri following their meeting an Italian aircraft designer, Luigi Pellarini. Early in 1964, Transfield registered the subsidiary company Transavia Pty Ltd.
By May of that year, a 16,000 square feet plant and a 19,000 feet airstrip was completed, and work on the prototype of the new craft had commenced.
On 15 April 1965, the first prototype took off from the strip at Seven Hills. An elated, yet apprehensive Belgiorno-Nettis declared to the Press: "We have already made a plane, the Airtruk, which looks like a baby elephant... I have sunk a quarter of a million pounds into the plane. I want it out of the red".
The first overseas order came from New Zealand. An aerial topdressing company purchased five Airtruks to drop superphosphate. By December 1968, fourteen planes were operating in New Zealand. At that time, the Airtruk was the only aircraft being produced commercially in Australia.
Production of the Airtruk stepped up in the following years: by August 1969, 29 planes had been produced; over 50 by December 1973 and a total of 101 were built by June 1981.
International interest in the unusual craft grew quickly. In 1969 the Airtruk was shown in South Africa, Indonesia, Thailand, India, Pakistan and Kenya. In 1971, demonstrations of the Airtruk capabilities were held in Denmark and Hungary, in 1973 at the Paris Air Show, and in 1976 the new plane was shown in California.
In 1977, Transavia began manufacturing Airtruk components in Taiwan. The parts were re-imported in Australia for assembly at Seven Hills.
The Airtruk even attracted the attention of kings and dictators. In 1971, Thailand's King Bhumibol imparted a Buddhist blessing to the first craft purchased by that country and, at the end of that year, Sudan's President Nemeiry inspected a plane at Khartoum airport.
By 1985, 75% of the aircraft produced had been exported to Denmark, South Africa, Malaysia, Taiwan, Thailand, New Zealand, China and Yugoslavia.
At the beginning of 1980, fifteen years after the prototype first flew, the Airtruk still was the most efficient agricultural aircraft in the world. The plane could lift a one-ton payload, more than its own weight. Its strange configuration earned it various nicknames, including "the flying Mango". It could be loaded in 20-30 seconds and land and take off from very short, rough country airstrips.
In 1983, Transavia engineers researched into the adaptation of the aircraft to a military role. The new model was designed to operate from rough strips, to carry weapons and forward stores, to perform field ambulance work and to support border patrol and counter-insurgency operations.
However, this attempt at breaking into the profitable air defence industry did not meet with success. The Federal Government afforded only lukewarm support to Transavia's efforts to expand and to build on the undisputed technical success of the military version of the Airtruk. Already in 1967, a frustrated Belgiorno-Nettis bitterly remarked that "with the combined efforts of the Government and the Department of Civil Aviation, the industry had been brought to a standstill".
This geocache has been hidden to celebrate this great little plane and, not by coincidence, is located near where planes still take off and land with gay abandon, even if they are smaller again. Embrace this lovely open space and enjoy the walk. Bring your dog, they will love you for it. And don't forget to bring your own pen!