Aircraft Descending?
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Answers:
Heavy means that he is a large aircraft such as 747 757 767 0r 777 or any of the large airbus aircraft.
Because of the wing tip vortices's any small aircraft that would come in behind the large aircraft could cause the small aircraft to loose control and crash. wing tip vortices's are like two small tornadoes that form at the wing tip of all aircraft at the moment they lift off the ground to the moment they are back on the ground. In large aircraft these vortices's can stretch several miles behind the aircraft. These vortices's are strong enough to flip a light aircraft upside down in the blink of an eye. The pilot of heavy aircraft are giving warning as to their approach to the airport.
heavy aircraft
The word 'heavy' is used for any aircraft over 300,000 lbs Gross Weight
Heavy denotes that he is a large a/c
Nah, it means that he is flyin a large plane.
Heavy denotes that the aircraft as big or bigger than say a B 767. ATC do not recommend Heights for aircraft to fly apart informing pilots of known turbulence at a given level. Otherwise ATC Assign levels to aircraft for a variety of reasons.
Heavy emphasises that the aircraft is heavy 135,000kg and therefore requires maximum spacing between other aircraft due to wake turbulance.
A time delay is issued for a departing aircraft after a heavy departured aircraft and this therefore requires a safe distance spacing from a heavy.
Smaller aircraft below 135,00 kg is described as medium and so on, this information is avaiable from the UK AIS website.
In response to some of the answers here, please don't bother answering this question if you don't know!
The size of the aircraft has got nothing to do with wake turbulance spacing, aircraft carry passengers cargo and fuel, having this extra weight can make a 757 meduim into a 757 heavy!
Personally I have always thought it meant large aircraft laden with passengers
It is used to warn other airplanes that the heavy aircraft is of a size that its wake turbulence could be hazardous. It used to be defined as any aircraft over 300,000 pounds. It has since been changed so that it encompasses any aircraft that weighs 255,000 or more. The reason why they made this change is because they determined that the Boeing 757 produces the largest wake turbulence of any aircraft ever recorded. As such, they dropped down the minimum weight so that a Boeing 757 would always be classified as a heavy.
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