On Fri, 15 Oct 2004 10:05:26 -0700, "C J Campbell"
wrote:


"Dave" wrote in message
.. .

Halifax, Nova Scotia , - Canada...

A cargo 747, 7 lost...

Some news reports are saying that the 747 attempted an intersection takeoff
with 6000 feet of runway left, fully loaded with fuel and cargo for a flight
from Halifax to Spain. Can the 747 really do that?

This Boeing site
(http://www.boeing.com/assocproducts/aircompat/747.htm) lists tech
details like the takeoff rolls for a given weight. We need to know
what model of 747, the brake release weight, and the pressure altitude
to determine takeoff roll.

As an example though:
The -100,-200,-300 versions of the 747 show the takeoff distance to be
9500 feet @ sea level @ max gross (720,000 lbs)

To make a 6000ft runway, the plane needs to be 140,000 lbs lighter
(580,000lbs).

The numbers for the 747-400 are even higher (starting @ 6000 feet, and
going up from there). Which explains Denver's 16,000ft runway.

-Nathan