Vw From United States of America, joined Mar 2000, 251 posts, RR: 1 Posted (11 years 12 months 3 days 8 hours ago) and read 1388 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?
OPNLguy From , joined Dec 1969, posts, RR:
Reply 3, posted (11 years 12 months 3 days 8 hours ago) and read 1354 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...
Air2gxs From , joined Dec 1969, posts, RR:
Reply 6, posted (11 years 12 months 2 days 22 hours ago) and read 1296 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.