Nearly 60 years after the Avro Arrow was scrapped amid controversy, members of the public got a first look at images of one of the test models recently found in the depths of Lake Ontario.

Members of the Raise the Arrow expedition unveiled still photographs and underwater video from a remote-operated vehicle on Friday morning in Toronto, confirming the discovery of the free-flight model.

In addition, the team announced what comes as a surprise to many Arrow enthusiasts — "there are more jets out there than originally thought," said John Burzynski, the expedition leader.

An image of one of the models found at the bottom of Lake Ontario by the Raise the Arrow expedition. The model is covered in zebra mussels, and there are plans to raise it from the water. (Raise the Arrow Expedition)

He called the finding a "discovery within a discovery" since "this was a secret program that no one knew was going on when it was going on, unfortunately a lot of the records are partial."

The additional models were described as very early iterations which were used as "test tracking vehicles." They may not have had all the characteristics of the Avro Arrow, as they were mainly used to test equipment, said Dr. Richard Mayne, a historian with the Royal Canadian Air Force. At this point, the team only knows that several were tested.

The Avro Arrow was designed to intercept Russian jets over Canada's North, shoot them down and then return to base to reload another missile. It's believed that nine three-metre-long models of the plane were fired over Lake Ontario. (Avro Museum)

Search hampered by weather

Due to poor weather conditions, the team has only had a "solid two weeks" of search since the expedition was announced in July, said David Shea, vice-president of engineering at Kraken Sonar, the Newfoundland and Labrador company aiding with the search.

That said, the lake bed — consisting largely of a rocky bottom — has helped in the search because "they didn't sink into the mud ... what fell in the lake basically sits on the bottom of the lake," said Burzynski.

Before the end of the season, the team plans to send divers into the lake to do a reconnaissance dive, said Scarlett Janusas, the expedition archeologist. The models were found between "30 metres and about 60 metres deep," added Burzynski.

John Burzynski, the mission's team leader, said the search has been a work in progress for the last year and a half, and his group has recently acquired all the necessary permits to conduct the search and possible recovery. (Makda Ghebreslassie/CBC)

"We've been given permission to remove some of the zebra mussels, so we may be able to find out exactly which model it is we're looking at," said Janusas.

She added the caveat was as the season progresses, conditions may get too rough to bring the model up to the surface.

"But when we are ready, we will be doing some excavation around the model," said Janusas. That procedure would involve digging around the Avro model, which is upside down, and building a cradle for it, to assure it won't break on ascent.

Popular jet scrapped in 1959

The Arrow, a sleek jet interceptor developed in Malton, Ont., in the 1950s, had the potential to propel Canada to the forefront in military aviation. The program was abruptly cancelled in 1959 by Prime Minister John Diefenbaker, resulting in 30,000 employees losing their jobs. As well, the planes were ordered to be destroyed.

April 1959: all five Arrows are cut to pieces. Nobody in Ottawa will own up to the decision. 3:53

It's believed that nine three-metre-long, or one-eighth scale, models of the Arrow fitted with sensors were strapped onto rockets, and fired over the lake from Point Petre, near Prince Edward County more than 200 kilometres from Toronto.

New search launched in July

In July, what's believed to be the biggest search of its kind for the models was launched — with the help of equipment that assisted the successful Franklin Expedition in 2016. The mission is a collaborative effort by several private companies in assistance with the Canadian Coast Guard and the Royal Canadian Military Institute.

The Avro Arrow was scrapped in 1959 after its development was controversially cancelled by Prime Minister John Diefenbaker. (Avro Museum)

Kraken Sonar Systems, which was awarded a $500,000 contract to aid with the search, including deploying its state-of-the-art ThunderFish underwater vehicle and AquaPix sonar system to capture high-quality images of the lake bed.

In July, the team announced the search grid would cover water ranging in depth from five metres closer to shore and 100 metres farther out in the lake. The mission was set to run the underwater sonar equipment for eight hours a day, after which the data was downloaded and analyzed by a team of scientists that also included archeologists.

Newfoundland and Labrador's Kraken Sonar used its Thunderfish autonomous underwater vehicle in the search. (CBC)

Their original goal was to search an area about half the size of Vancouver, or 64 square kilometres.

A 1980 CBC report said that after the destruction of the existing Arrow planes — created based on the models now in Lake Ontario — pieces were sold to a Hamilton junk dealer, for 6.5 cents per pound. At 67,000 pounds, a scrapped Arrow would have cost $4,355.

The first sleek white Avro Arrow is unveiled in front of a crowd of 12,000 at the Avro Plant in Malton. But the Russians unveil something of their own. Arrow photo: National Archives of Canada, PA-210520 0:33

Dief the Chief on the Avro Arrow: 'It was right to end it.' 1:48