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Old 9th Aug 2005, 19:28
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CosmosSchwartz
 
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Some flawed logic there I think F3G. There may or may not be some aircraft out there which would prove your logic, but as far as airliners as concerned :

The approach speed is not the deciding factor, and I'd be very surprised to find a 737 requiring more LDA than a 747, unless the 737's flaps and brakes had failed

The major factor in LDA is how much is required to dissipate all that energy, and a circa 200 ton jet has a lot more momentum than a 50 ton jet, even if it is going slower.

For reference, compare here : 737 perf to here : 747 perf

(Acrobat docs)
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