The weight of the fuel (appx 6-7 pounds per gallon) would possibly increase the landing roll to exceed the actual runway available. The heavier the aircraft gross weight the longer tha landing roll. Al ----- Original Message ----- From: "Matthew Montano" <mmontano@xxxxxxxxx> To: <AIRLINE@xxxxxxxxxxxxxxxxx> Sent: Thursday, June 24, 2004 8:50 PM Subject: Re: Dumping fuel > Most large aircraft do have the capability, by the nature that as a % > of their total weight, the fuel is a significant junk. > > DC-10s/MD-11s, as do 767s, 747s, 777s. > > Someone visualized it for me that if a large aircraft landed that was > almost full of fuel (if it could hold any sort of glide path) would > stop when the wheels touched the ground; but the wings would keep > going. > > Boom. > > Not sure how true that would be though. > > Matthew > > On Jun 24, 2004, at 12:44 PM, mgreenwood@xxxxxxxxx wrote: > > > Not every aircraft has the capability to dump fuel. I think it may > > only be > > Boeing aircraft that have that capability. I know on the 747 when fuel > > is > > dumped it comes from valves at the ends of the wings, well above and > > away from > > the engines. I am sure that with the speed of the aircraft the fuel > > would dissipate rather quickly with no chance of ignition. > > > > Mark > > > > Quoting Dennis W Zeuch <DZTOPS@xxxxxxx>: > > > >> Was thinking about an aircraft 'dumping fuel' to make an emergency > >> landing. > >> Isn't that really dangerous? It seems the fuel would vaporize and > >> become > >> explosive and the planes own engines could ignite it. > >> Anyone out there know how its done and why its safe? > >> >