This is contrary to the orders they received from either the military air battle management or the civil air traffic control, the phenomenon known as broken clearances.

-In 60-70 percent of cases it occurs during air combat exercises and other cases to and from the exercise area, "says Christer Westerlund, commander of headquarters near the pilots who work in aviation safety.

When asked why pilots flying through the specified flight levels, there are many different answers, "he says.

"There may be forgetfulness, misunderstanding and fell ushering. One thinks of something else, especially when you are in the exercise areas. And then when you are on the way home maybe you think too much on the actual exercise "says Christer Westerlund.

"But that does not depend on bus flinging or attitude problems, but more on the unconscious act, he argues.

The Accident Board is now common ground for the first time a serious incident caused by a broken clearance and was recently completed with a report.

The conclusion is that the Armed Forces must reduce the number of over and flight levels with Jas39Gripen-plan to a "tolerable level".

This is implemented in cooperation with the Transportation Board, responsible for civil aviation.

The broken-clear rings are too many and should be taken down. Although the likelihood of an accident is very small so can the wrong flying they cause a terrible disaster, "says Goran Rosvall, chairman of the inquiry.

It was the morning October 3, 2007 as the pilot in the Gripen fighter plane accidentally dropped X96I 300 feet below the level indicated by the controller, to FL 150th

Gripen fighter plane was en route from a military drill to land in Ronneby, where it arrived on collision course with one of Gotland aircraft, a Saab 340 operator.

The plan, coming together with 460 meters per second and was just two seconds away from each other, "says Goran Rosvall.

On board the Saab340 were two pilots and 18 passengers. They were en route from Bromley to Ronneby when Gripen plane turned up its nose at an angle in front of them.

According to the pilots Gripen aircraft was 200 feet away laterally, while the technical equipment points to a difference of 1 000 meters in width and 30 meters in height.

According to air traffic rules would plan to remain separate at least 5 000 m laterally and 300 feet in height.

In the Gripen the pilot came on the wrong flight level ordered the air traffic controller that he would rise, which he did.

The same orders were pilots in Saab340 through anti-collision system TCAS as Jas39Gripen no. However, the Gripen is visible through the transponder on the TCAS system.

Since both the plan step in the sky was still on collision course and TCAS gave the order "descent".

"It was uncomfortable for passengers," said Agne Widholm, chief investigator at the crash Commission. They got to ride roller coaster...

The pilot in the Gripen fighter plane has not really been able to explain why he ran down to a lower flight level than he had permission to be on.

Naturally, he expresses himself so that the Accident Commission documents that it was "extremely serious and the term clan".