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Heavy Classification?  
User currently offlineVw From United States of America, joined Mar 2000, 257 posts, RR: 1
Posted (14 years 2 months 1 week 5 days 18 hours ago) and read 1637 times:

Last night listening to Chicago approach on the internet I hear Am Tran *** heavy. I thought wow a L-1011 to MDW. I look it up on a flight tracker and it was a B753 LAS-MDW. I thought a HEAVY was a twin aisle jet.
What then is it?

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7 replies: All unread, jump to last
User currently offlineFrequentFlyKid From United States of America, joined Nov 2001, 1206 posts, RR: 1
Reply 1, posted (14 years 2 months 1 week 5 days 18 hours ago) and read 1620 times:

It has to do with weight. It does not have to do with the number of aisles. All twin aisle aircrafts meet the weight requirement so all twin aisles are heavy.

Please correct me if I am wrong.

User currently offlineArsenal@LHR From United Kingdom, joined Mar 2001, 7792 posts, RR: 18
Reply 2, posted (14 years 2 months 1 week 5 days 18 hours ago) and read 1621 times:
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It can be confusing regarding what a heavy is. Generally, i think of a "heavy" as a twin aisle widebody plane. Anything from a 762 to a 744. I wouldn't consider a 757 heavy though.


In Arsene we trust!!
User currently offlineOPNLguy From , joined Dec 1969, posts, RR:
Reply 3, posted (14 years 2 months 1 week 5 days 18 hours ago) and read 1603 times:

The definition for a heavy (here in the US) used to be 300,000 lbs, but it was changed to about 255,000 (can't recall the exact figure). You might do a search of the messages, as I'm sure links to the official criteria have been mentioned before.

Even though some 757s are below the 255,000, they are still treated as heavies for wake turbulence separation...

User currently offlineLymanm From Canada, joined Jan 2001, 1140 posts, RR: 1
Reply 4, posted (14 years 2 months 1 week 5 days 15 hours ago) and read 1578 times:

This topic comes up WITHOUT FAIL every few months or so... Check the archives.

buhh bye
User currently offlineMatt_milligan From Canada, joined Jan 2002, 79 posts, RR: 0
Reply 5, posted (14 years 2 months 1 week 5 days 12 hours ago) and read 1559 times:

what is the significance of the heavy designation?

User currently offlineAir2gxs From , joined Dec 1969, posts, RR:
Reply 6, posted (14 years 2 months 1 week 5 days 8 hours ago) and read 1545 times:

Heavy is added as a designation to warn others that the aircraft is capable of producing moderate to severe wake turbulance. The B757 was added some time ago because of the wake turbulance encountered by following aircraft.

User currently offlineTs-ior From Tunisia, joined Oct 2001, 3734 posts, RR: 5
Reply 7, posted (14 years 2 months 1 week 5 days 4 hours ago) and read 1528 times:

The B757 is considered "heavy" due to the important wake turbulence it makes !!!

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