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| | |-+  AA254 Heavy is going around at 11:50 KLAX 11/30! and Funny ATC Whistling .
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Author Topic: AA254 Heavy is going around at 11:50 KLAX 11/30! and Funny ATC Whistling .  (Read 11241 times)
Dannno
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« Reply #15 on: December 16, 2009, 12:29:38 AM »

I vaguely recall some 15 years or so ago the FAA got a bunch of complaints of turbulence from planes following behind a 757.  They decided the 757 wing generated stronger than "normal" wingtip vorticies than would be expected for the weight.  ATC was instructed to compensate by treating all 757's as heavy even if they wouldn't otherwise require the designation.

Memory is vague as it really didn't affect me one way or the other.
« Last Edit: December 16, 2009, 12:34:27 AM by Dannno » Logged
sykocus
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« Reply #16 on: December 16, 2009, 03:41:00 AM »

I vaguely recall some 15 years or so ago the FAA got a bunch of complaints of turbulence from planes following behind a 757.  They decided the 757 wing generated stronger than "normal" wingtip vorticies than would be expected for the weight.  ATC was instructed to compensate by treating all 757's as heavy even if they wouldn't otherwise require the designation.

Memory is vague as it really didn't affect me one way or the other.


It boils down to this. All 753's are heavies. Some 752's are heavies due to extra fuel tanks and being rated for a higher MTOW then most 752's. Even the 752's that are not heavies have special separation rules that apply to them on final, but it's not as simple as treating them as heavies.
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Yesterday I couldn't spell air traffic controller. Today I R one.
speedotann
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« Reply #17 on: December 16, 2009, 10:36:40 AM »

I was at KSNA yesterday and they called an American 757 Heavy and the US Air 757 regular. It must be the added tanks and winglets also. The Cactus didnt have the winglets.
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OO
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« Reply #18 on: December 19, 2009, 09:34:56 PM »

We now have to treat all 757 200 series as heavies. But if you ask the pilot and they state that they are not a heavy then you can treat them as a regular 757.
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charlielima
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« Reply #19 on: January 03, 2010, 11:30:05 PM »

At KLAX AAL is the only carrier with the exception of an occasional AWE that have H/B752/_
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