any large type aeroplane
2006-12-13 04:32:12 · 10 answers · asked by graham b 1 in Cars & Transportation ➔ Aircraft
In the UK (Im an Air Traffic Control Assistant), fuel dumping is a last resort. Normal the aircraft will be placed in a holding pattern and left to burn the fuel.
If dumping occurs, it is normally done over water, or the aircraft is taken into one of the larger Military training areas. Dumping should take place above 10,000 feet agl. In exceptional circumstances, fuel may be jettisoned above 7,000 feet agl. in winter, and above 4,000 feet agl in summer. Any jettisoning below these levels must be unavoidable.
Certain aircraft, for example Boeing 737's can't dump fuel, but are certifed to land at their maximum takeoff weight.
2006-12-14 02:50:18 · answer #1 · answered by Hedonist 2 · 0⤊ 0⤋
Fuel dump is not available on all planes but rather on some planes who have a higher take off weight than landing weight.
This is only done in an emergency. The 747-400 can dump at 5000 LBS/per minute. It takes over 20 minutes to dry the tanks up (giving some padding). You can dump anywhere that is over "unpopulated" areas. But it isn't specified over water. I have only had to dump fuel once in my life. There was a ton of paperwork/questions and I was told next time we would have to pay for the fuel lost.
2006-12-13 08:25:49 · answer #2 · answered by Drewpie 5 · 1⤊ 0⤋
depends how much weight there is onboard. if there is alot, then fuel dump will occur for safety (just in case there is a fire hazzard) and for the fact that the gear doesn't rip off/buckle on landing.
it usually takes about 11-15mins to empty a fully loaded 747 because it has to climb to an altitude in which the fuel will vapourise instead of showering us with fuel ;)
2006-12-13 06:36:53 · answer #3 · answered by Boeing 777 2 · 0⤊ 1⤋
I dont think passenger aircraft are able to dump fuel. The reason I think this, is that I have heard of occasions when the undercarriage has failed to come down, that the planes have had to circle for an hour or so to burn up fuel, to reduce the risk of fire while making the emergency landing. So they would`nt do that if they were able to just dump it, would they?
2006-12-13 04:39:15 · answer #4 · answered by David H 6 · 1⤊ 2⤋
Depends on how much fuel is in the plane, but normally it would be just enough to prevent a serious explosion.!!!
2006-12-13 04:43:25 · answer #5 · answered by JAM123 7 · 0⤊ 0⤋
That'll depend on how much fuel has been used/ how long its been in the air for
2006-12-13 04:37:35 · answer #6 · answered by sugarplum9903 4 · 0⤊ 0⤋
Depends how much it has in the fuel tanks!
2006-12-13 04:39:06 · answer #7 · answered by jayktee96 7 · 0⤊ 0⤋
As much as they can to reduce the amount of potential fire hazard upon landing.
2006-12-13 04:37:27 · answer #8 · answered by PriJet 5 · 2⤊ 0⤋
it depends how far its flown
2006-12-13 04:34:14 · answer #9 · answered by Snot Me 6 · 0⤊ 0⤋
Almost all of it.
2006-12-13 04:43:19 · answer #10 · answered by funnelweb 5 · 0⤊ 0⤋