steiner From Denmark, joined Jun 2010, 8 posts, RR: 0 Posted (4 years 5 months 1 week 2 days 23 hours ago) and read 2618 times:
I would like to know more about procedures for fuel dumping....
1. is a special airspace reserved for this around the airports or is fuel dumped where it is most convenient?
2. how large an area is covered?
3. and for how long?
4. minimum requirements? Altitude etc.
5. I guess this is something you clear off with ATC?
KingairTA From United States of America, joined Feb 2009, 458 posts, RR: 0
Reply 1, posted (4 years 5 months 1 week 2 days 19 hours ago) and read 2530 times:
In my C130 days if we had to dump fuel we dumped. Most of the fuel I've dumped was durring FCFs. Just enough from each tank to ensure the system worked. I was LM so I'm not sure about altitude restrictions but from listening in on the radio calls I don't ever recall letting ATC know about fuel dumping. It vaporizes pretty fast once it leaves the airplane.
7673mech From United States of America, joined Mar 2004, 744 posts, RR: 0
Reply 2, posted (4 years 5 months 1 week 2 days 19 hours ago) and read 2522 times:
As KingAir stated on Functional Test Flights post heavy maintenance - fuel is dumped to check the system.
Even on commercial aircraft, we never cleared it with ATC. Never slowed down either. I too was the guy checking the windows to make sure the fuel dumped.
In an emergency, a flight would contact ATC and request a block of space so they can dump and return.
That being said, it can be done pretty much anywhere.
Depends on the volume. There's typically no need to dump more than you need to get to landing weight, and that will depend on how much fuel you've got at the time you start. Could be seconds (for a test), could be half an hour or more.
That depends on the airspace you are in, it is illegal in many countries to drop anything from an aircraft in flight, including fuel. In an emergency you can dump fuel at any time, but the regulations normally say something to the effect to notify ATC as soon as possible.
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