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Mo91
19th Dec 2006, 19:43
I am not used to some terms used in the tower. I have found out what most mean but would still like to know what the term "heavy" means in an aircraft situation.
Responses would be much appreciated.

aluminium persuader
19th Dec 2006, 19:57
"Heavy" refers to the aircraft's Wake Vortex Category. In the UK there are four categories;
Light eg club aircraft - Cessnas, Pipers and the like.
Small - larger multi-piston a/c & smaller turbo-props
Medium - larger turbo-props & smaller jet airliners
Large - larger jets

ICAO use only light, medium & large.

Ther categories are used to provide a safe spacing between aircraft as they leave a wake in the sky much like a boat does on water. It would be dangerous to put you in a rowing boat right behind the QE2 going at full pelt, if you see what I mean?

Only a very generic overview. Look on the CAA or ICAO sites for further info.

ap

MancBoy
19th Dec 2006, 20:04
Don't forget upper medium for your 757's

aluminium persuader
19th Dec 2006, 21:30
Hey! Give the poor guy a break - he's only 15!

:8

Mo91
20th Dec 2006, 16:10
hehe...no its ok. The more knowledge I have now...The better my knowledge will be for later. Thanks for the responses

BDiONU
20th Dec 2006, 18:32
To be more specific:

Maximum Take off weight (kg)

Light - 17,000 or less
Small - 17,000 - 40,000
Medium - 40,000 - 136,000
Heavy - 136,000 or greater

:)
Don't forget the new category J, Super Heavy for the A380 ;)

BD

reportyourlevel
21st Dec 2006, 15:41
They didn't teach us that bit at the college yet! ;) :P

Yes they did! You need to read your notes more carefully!

055166k
21st Dec 2006, 20:44
Ah yes! Politics rears its ugly head.
Cat J Super Heavy......amazing how the An225 has flown for so many years without having a special category.....considering that it is 40 tons heavier.

sikeano
22nd Dec 2006, 11:45
maybe there is no j in russian OR Ja means yes :ugh: