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Airborne Unlimited-12.02.22

Tue, Sep 07, 2021

Stunning! Airplane Flies Through Tunnel At 150 MPH

Italian Aerobatic Pilot, Dario Costa, Clears Turkey’s Çatalca Tunnels In Under 44 Seconds

Wow.... we'd have loved to have been there to see this for ourselves... but thanks to Red Bull, we have plenty of video... Just after dawn on Saturday, September 4 2021, professional race and aerobatic pilot Dario Costa of Italy his Zivko Edge 540 through the VERY narrow confines of two enclosed auto tunnels just outside Istanbul.

In near-darkness and closely surrounded by the concrete arc of the walls, Costa executed a tricky takeoff inside the first tunnel, flashed briefly through a gap and then continued his 150+ MPH flight through a second tunnel, flying only a few feet off the ground the entire time in order to clear the roof of both tunnels.

Costa, 41, won the top category of the Italian Aerobatic Championship and became the first Italian pilot to join, and earn a race win in, the Red Bull Air Race Challenger Class. With over two decades of flying experience, and numerous aviation feats to his credit, he has flown more than 60 airplane models and logged over 5,000 hours in the air – more than half as an aerobatic pilot.

The Tunnel Pass was by far Costa’s most demanding and complex undertaking yet, requiring a team of 40 people, specially developed training technology and more than a year of preparation. Throughout, the project was shrouded in secrecy to limit variables and distractions, allowing a complete focus for the successful flight that was no more than a simple idea on paper 12 months ago.

Located outside Istanbul on Northern Marmara Highway and initially put into service in March 2020, the dual Çatalca tunnels are state-of-the-art; but were designed for automobile traffic, not the flight of an aircraft.

At the controls of his specially modified Zivko Edge 540 raceplane, Costa took off inside the first tunnel at 0643 CEST, with the early hour putting the sun at the pilot’s back and offering optimal ambient conditions. Limited overhead clearance meant that he had to keep the aircraft on an average flight path between 2 and 3 feet above the asphalt, while also managing a tight distance of about 11 and a half feet between each wingtip and the tunnel walls. Complicating the flightpath were changes in incline and shape throughout the two tunnels.

From takeoff to exiting the second tunnel, the flight lasted 43.44 seconds, covering a distance of 1.4 miles and reaching a top speed of just over 150 MPH.

Changes to airflow, combined with the highly sensitive steering of the aircraft, required pilot reaction times of less than 250 milliseconds and fine hand movements of mere millimeters throughout the flight. One of the most critical moments came at the 400 yard gap between tunnels, which exposed the raceplane to cross winds as Costa prepared to thread it into the low, narrow opening of the second tunnel.

Costa explained, “Everything seemed to be happening so fast, but when I got out of the first tunnel, the plane started to move to the right because of the cross winds, and in my head, everything slowed down in that moment. I reacted and just focused on getting the plane back on the right path to enter the other tunnel. Then in my mind everything sped up all over again.”

When the raceplane shot out of the other side, Costa pulled it into a celebratory loop before landing, adding that “I’d never flown in a tunnel in my life – nobody had ever done it – so there was a big question mark in my head whether everything would go as we expected or if there would be something to improvise. It was a big relief, of course, but big, big happiness was the main emotion. For me it’s another dream come true.”

The achievement reportedly sets a new Guinness World Record: Longest Tunnel Flown through with an Airplane. Four other notable records were: first airplane flight through a tunnel, longest flight under a solid obstacle, first airplane flight through two tunnels, and first airplane takeoff from a tunnel.

Costa was mentored by Hungarian aerobatic and racing pilot Péter Besenyei, 65, a true aviation legend renowned for his role in developing and competing in the Red Bull Air Race. Besenyei is also well known for feats such as flying upside down under the Chain Bridge in Budapest.

Besenyei said: “To fly in a tunnel is not a normal situation. The main point is the mindset. Because to fly straight at one meter off the ground and follow a center line is not really so difficult technically if you are over a runway. But in the tunnel, especially a dark tunnel, and to come out of the tunnel into the light and then back into another dark tunnel, it’s different. And also there are air waves that can affect the flight, and you should expect some bumps. It’s difficult in your mind because you know that if you make a mistake, the wall is hard.”



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