Asiana Airlines Emergency Landing In SeaTac
04-30-2009 | 02:26 PM
#11
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From: 747 Captain (Ret,)
All the airplanes that I know about that have a dump system make it physically impossible to dump all the fuel.
The ones that I have flown leave an undumpable quantity of 1 to 2 hours of cruise fuel consumption.
Joe
The ones that I have flown leave an undumpable quantity of 1 to 2 hours of cruise fuel consumption.
Joe
04-30-2009 | 07:26 PM
#12
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From: CL-65 F/O
If you dump above 6000 feet the fuel evaporates prior to reaching the ground.
Many airlines will only you have you dump enough fuel to make a safe overweight landing. (767 only lets you dump from the center tanks. Means if you were fully loaded with Jet A you will still land with ~ 80K of gas. )
Many airlines will only you have you dump enough fuel to make a safe overweight landing. (767 only lets you dump from the center tanks. Means if you were fully loaded with Jet A you will still land with ~ 80K of gas. )
You can't transfer to the center tank and then dump that?
I bet the airlines just cringe when they have to dump gas!
04-30-2009 | 07:34 PM
#13
APC co-founder
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From: B777
On the triple (-200 series) you can dump everything out of the center and to the standpipes in the mains and you'll be left with 23K. The automation also lets you set a landing weight and then the jet closes the dump valves when you reach a safe landing weight.
05-01-2009 | 04:33 AM
#15
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From: C47 PIC/747-400 SIC
so long as its a smooth touchdown,just an overweight landing inspection by a mech is required, i once had the pleasure of dumping 30000 lbs of jetA over ann arbor,when a leading edge device didnt retract on the 727-200, we were at 10000 feet,so the fuel atomized,and never touched the ground in theory.
05-01-2009 | 09:53 AM
#17
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From: 747 Captain (Ret,)
05-01-2009 | 03:49 PM
#18
A moment please...
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From: Just passin' thru
05-01-2009 | 08:40 PM
#19
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From: Sleeping in the black swan’s nest.
Seriously,
NOT!!
Having spent 7 years as an instructor on the 777 I can seriously tell you that if you've got enough runway it is a serious non event. In fact it is often recommended to land over weight rather than dump as the over weight landing inspection is much cheaper than dumping fuel.
Seriously.
05-01-2009 | 08:56 PM
#20
Working Class Dog
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From: Spares Pusher
Seriously,
NOT!!
Having spent 7 years as an instructor on the 777 I can seriously tell you that if you've got enough runway it is a serious non event. In fact it is often recommended to land over weight rather than dump as the over weight landing inspection is much cheaper than dumping fuel.
Seriously.
NOT!!
Having spent 7 years as an instructor on the 777 I can seriously tell you that if you've got enough runway it is a serious non event. In fact it is often recommended to land over weight rather than dump as the over weight landing inspection is much cheaper than dumping fuel.
Seriously.
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