FrndlySkys777
Posts: 21
Joined: Mon Apr 03, 2000 10:46 am

Heavy 757?

Wed Jul 28, 2004 5:38 am

I was listening to Norcal approach yesterday and I realized that the Northwest 757-300 pilot noted that he was heavy. Apparently the controller seemed confused since at times he forgot to say heavy after the NW's callsign. Prior to this, I thought that usually only widebodies use heavy. Can anyone shed some light on this?

Thanks
 
captaingomes
Posts: 6251
Joined: Tue Feb 13, 2001 1:33 am

RE: Heavy 757?

Wed Jul 28, 2004 5:43 am

The 757 is unique in that it is the only narrowbody aircraft to earn a "heavy" on its callsign. This is a result of its ability to create strong wake turbulence that is more powerful than other narrowbody aircraft.

Try doing a search, as more has been said about this topic before, and it is quite interesting. Cheers!
"it's kind of like an Airbus, it's an engineering marvel, but there's no sense of passion" -- J. Clarkson re: Coxster
 
whitehatter
Posts: 5180
Joined: Sat Jun 12, 2004 6:52 am

RE: Heavy 757?

Wed Jul 28, 2004 5:46 am

Concorde was also a narrowbody that attracted 'heavy' in its callsign.
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SafetyDude
Posts: 3654
Joined: Fri Sep 07, 2001 10:02 am

RE: Heavy 757?

Wed Jul 28, 2004 5:52 am

There was a discussion a few days ago which mentioned that "heavy" is used for an aircraft that is over a certain weight, and 757s can be both heavies and non-heavies.

 Smile
-Will
"She Flew For What We Stand For"
 
trnswrld
Posts: 1068
Joined: Sat May 22, 1999 2:19 am

RE: Heavy 757?

Wed Jul 28, 2004 5:52 am

As stated years back the weight limit for the heavy designation was lowered to 255,000lbs specifically because of the severe wake turbulence the 757 produced. I havent ever heard of ATC using the term "heavy" in the callsign of a 757 as that term is still mainly used for the true widebodies. However controllers will usually always say "caution wake turbulence following a Boeing 757". Although im not positive the DC-8 and 707 were likely heavies even though they are single aisle narrowbodies.
 
captaingomes
Posts: 6251
Joined: Tue Feb 13, 2001 1:33 am

RE: Heavy 757?

Wed Jul 28, 2004 5:55 am

You guys raise good points. First of all, I didn't know the Concorde could also be referred to as a "heavy", but that would make sense, with the drag produced by the delta wing. Secondly, it would make sense that a DC-8 or 707 would produce at least as much wake turbulence as a 757. Perhaps I'm the one who should do the search for the older topics to learn a bit more about this  Big grin
"it's kind of like an Airbus, it's an engineering marvel, but there's no sense of passion" -- J. Clarkson re: Coxster
 
pbiflyer
Posts: 145
Joined: Wed Apr 28, 2004 5:39 am

RE: Heavy 757?

Wed Jul 28, 2004 6:31 am

Generally you only hear 757-300's being called heavy.
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Tristar100
Posts: 306
Joined: Mon Jul 05, 2004 6:08 am

RE: Heavy 757?

Wed Jul 28, 2004 6:44 am

I thought stretched variants of the DC-8 such as the 60 and 70 series called "heavy".

Steve.
 
DeltaRules
Posts: 3696
Joined: Sat Sep 01, 2001 11:57 am

RE: Heavy 757?

Wed Jul 28, 2004 7:06 am

I remember hearing ATC in SJU call UPS's Stretched DC-8s "Heavy" when talking to them.

DeltaRules
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SPREE34
Posts: 1563
Joined: Tue Jun 29, 2004 6:09 am

RE: Heavy 757?

Wed Jul 28, 2004 9:35 am

Any aircraft CAPABLE of a takeoff weight of 255,000 lbs or more, is classified as "heavy". This applies to some, not all, B757-200s, and to all B757-300s. B707-320s, and 420s are Heavies. Some, not all, DC-8s are Heavies. The KC-135s that are reengined with CFM-56 engines are "heavies".

The requirement is based on what takeoff weight the aircraft is capable of.

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N766UA
Posts: 7843
Joined: Thu Jul 29, 1999 3:50 am

RE: Heavy 757?

Wed Jul 28, 2004 10:23 am

The 757 is unique in that it is the only narrowbody aircraft to earn a "heavy" on its callsign

Don't forget the DC-8 stretch and the 707s! UPS DC-8s, for example, are well over 255,000 lbs so they are heavy. Also, the 757-300s (and ATAs 757-200s) are over 255,000 and also have high-lift wings. Thus, heavy.
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