747400sp
Topic Author
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Joined: Sat Aug 09, 2003 7:27 pm

How Is Polar Air Able To Do LAX-NRT With 744F?

Mon Jan 02, 2012 3:39 pm

I was just looking though Flightaware, and I saw that Polar Air have a non stop LAX-NRT service, operated by 744Fs. I thought that 744Fs, did not have the legs for LAX-NRT, so how is Polar able to this?
 
BMI727
Posts: 11300
Joined: Mon Feb 02, 2009 9:29 pm

RE: How Is Polar Air Able To Do LAX-NRT With 744F?

Mon Jan 02, 2012 4:30 pm

Quoting 747400sp (Thread starter):
so how is Polar able to this?

Less than full plane? With equal payload, a freighter will fly nearly as far as far as a passenger plane will (freighters tend to have slightly higher OEWs) but the difference in practice is that freighters usually get loaded down, since freight doesn't mind making a stop.
Why do Aerospace Engineering students have to turn things in on time?
 
tdscanuck
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Joined: Wed Jan 11, 2006 7:25 am

RE: How Is Polar Air Able To Do LAX-NRT With 744F?

Mon Jan 02, 2012 5:13 pm

Quoting 747400sp (Thread starter):
I thought that 744Fs, did not have the legs for LAX-NRT

LAX-NRT is only 4800 nm (great circle). You can do that with a 747-400F comfortably if you go out at MTOW and reduce payload by about 30,000 lbs from maximum (about an 11% hit). At that part of the payload/range curve you're MTOW limited.

At maximum payload, a 747-400F will go about 4300 nm.

Tom.
 
KAUSpilot
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Joined: Mon Jan 28, 2002 2:15 pm

RE: How Is Polar Air Able To Do LAX-NRT With 744F?

Mon Jan 02, 2012 9:31 pm

Polar also does HKG-CVG which is about 7700 NM, granted the route has tailwinds. They're usually limited to about 65% payload (about 75 tons of freight max). Polar carries a lot of DHL package freight which can often be bulky but not too heavy, so the payload restrictions aren't a route killer.
 
113312
Posts: 647
Joined: Sat Apr 16, 2005 9:09 am

RE: How Is Polar Air Able To Do LAX-NRT With 744F?

Tue Jan 03, 2012 3:20 am

I guess you don't remember that the airlines flew the Classic on that route non-stop? Actually, the empty weight of a freighter is less than a passenger plane since you don't have galleys, seats, entertainment, meals etc. Yes, you do have a strengthened floor and cargo handling system. Often, the actual takeoff weight of a freighter is higher than a passenger plane with all seats occupied.

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