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Was it 30 seconds or three minutes late?

What is certain is that the Qatar Airways pilot was not allowed to take off from the new BER airport in Berlin with the FC Bayern Munich team after midnight.

The pilots of the airline sponsor of the record champion got to know how exactly the German air traffic control (DSF) responsible for the flights from BER can take the night flight ban from midnight.

In the summer, the departure to Doha would have been on time.

But in winter, aircraft are laboriously de-iced before take-off on the instructions of the pilot and that costs time and money.

The de-icing of aircraft repeatedly contributes to flight delays.

It takes roughly 20 minutes to professionally remove snow and ice from a wide-body aircraft such as the modern Airbus A350 used by Qatar Airways for Bavaria and to apply a liquid protective layer.

On the charter flight with the Munich-based company, the procedure was very quick and didn't take 20 minutes, says a BER spokeswoman on request.

De-icing must be done immediately before take-off.

An Airbus A350 from Qatar Airways

Source: pa / Markus Mainka

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For the procedure, the aircraft is showered or sprayed with hundreds of liters of a chemical mixture of water and glycol from several special vehicles with lifting platforms.

Above all, the wings and tail units are targeted.

You must be free of snow and ice.

Otherwise, it could reduce lift and lead to a fall.

Airplanes have already crashed several times due to missing or insufficient deicing.

The security measure costs several thousand euros 

It is not known how much Qatar Airways had to pay for the de-icing of the Airbus A350, which allegedly had only 80 passengers.

De-icing price lists estimate up to 10,000 euros for an A350.

Charter flight QTR7402 was not even allowed to take off and the crew had to spend the night on the plane because they had already formally left after passport control.

The next morning, with a stopover in Munich to exchange the crew, we finally continued.

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In general, ice formation on the wings is a danger for aircraft because it also increases the resistance in the air and there is a risk of a so-called stall.

While the special de-icing vehicles are used on the ground before take-off, technical tricks are used for flights at high altitude with icy temperatures.

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For example, hot air is tapped from engines and fed to the wing tips via a pipe system.

It provides so much heat that drops of water that hit it evaporate.

There are also solutions with electric heating mats in the wing leading edge.

The Boeing 787 model has a special position here.