ubeema From United States of America, joined Aug 2012, 83 posts, RR: 0 Posted (2 years 4 months 3 days 2 hours ago) and read 8302 times:
I live in the DFW area and the KL032 engine incident after takeoff on Sunday made me curious as my wife was asking me and I could not answer. Although it is an emergency procedure, are there known negative effects to the population and the environment in the area surrounding the flight path due to fuel dumping? Send me a link to the thread if this was answered before on a.net.
AR385 From Mexico, joined Nov 2003, 7478 posts, RR: 41
Reply 3, posted (2 years 4 months 3 days 1 hour ago) and read 8184 times:
Environmentally/to humans I think there are no issues. Unless it´s a catastrophic emergency the plane will get to an altitude that will ensure the fuel is dissolved or dispersed when leaving the tanks. In the case of the flight you mention, they actually climbed to a higher altitude to dump fuel.
pwm2txlhopper From United States of America, joined Jan 2004, 1437 posts, RR: 1
Reply 4, posted (2 years 4 months 3 days 1 hour ago) and read 8143 times:
I'd say virtually none. The fuel dissipates before it ever hits the ground.
Go out in the car on the interstate. Get up to about 80MPH and throw a cup of water out the window. If you watch, it essentially breaks apart into a spray that barley wets the ground. Now imagine flying at several thousand feet at 200+ knots and ejecting fluid into the air. it's going to dissipate into a fine mist instantly. Any trace amounts of almost vaporized fuel is simply going to evaporate before it ever hits ground.
freakyrat From United States of America, joined Aug 2008, 960 posts, RR: 1
Reply 5, posted (2 years 4 months 3 days 1 hour ago) and read 8031 times:
The plane left a nice fuel vapor trail though. The neatest one that I saw was when I lived in Conroe and a Continental B727-200 leaving IAH developed a hydraulic leak and had to return immediately back to IAH. It flew right over our subdivision at about 1,500 feet maybe lower and since it was close to sunset the fuel lit up behind the plane and looked pretty spectacular.
Last summer I was flying to AMS on United's daily flight out of IAH when we encountered a problem with the Captain's PFD and had to divert to EWR. We started dumping fuel but had to turn east south of the Washington SFRA. I don't think they wanted anyone dumping fuel over DC unless it was an absolute emergency.
Starlionblue From Greenland, joined Feb 2004, 17491 posts, RR: 66
Reply 12, posted (2 years 4 months 20 hours ago) and read 6967 times:
Quoting sccutler (Reply 11):
There's a nut-job in Sedona, Arizona who is convinced that bizjets always dump fuel before landing. Clearly, she has not checked on what the fuel costs!
This belief is unfortunately more common than we would like to think. A friend of mine once heard a guy one a plane explaining condensation on top of the wing with, "that's just the pilots dumping fuel before landing".
Cue the chemtrail nuts...
[Edited 2013-10-09 21:29:50]
"There are no stupid questions, but there are a lot of inquisitive idiots."