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Fuel Dumping....  
User currently offlinesteiner From Denmark, joined Jun 2010, 8 posts, RR: 0
Posted (4 years 2 months 1 week 5 days 4 hours ago) and read 2540 times:

Hi

I would like to know more about procedures for fuel dumping....

ie.

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?

I hope someone can help me with this.

TIA
Best regards
Steiner

4 replies: All unread, jump to last
 
User currently offlineKingairTA From United States of America, joined Feb 2009, 458 posts, RR: 0
Reply 1, posted (4 years 2 months 1 week 5 days ago) and read 2452 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.

User currently offline7673mech From United States of America, joined Mar 2004, 729 posts, RR: 0
Reply 2, posted (4 years 2 months 1 week 5 days ago) and read 2444 times:
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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.


User currently offlinetdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 3, posted (4 years 2 months 1 week 4 days 23 hours ago) and read 2408 times:

Quoting steiner (Thread starter):
1. is a special airspace reserved for this around the airports or is fuel dumped where it is most convenient?

If you're dumping fuel, it's either for test (very small quantity), or an emergency. In either case, you do it where you need to, no clearance required.

Quoting steiner (Thread starter):
2. how large an area is covered?

In air, it depends on the volume and speed. Done right, it evaporates before it hits the ground so nothing is covered.

Quoting steiner (Thread starter):
3. and for how long?

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.

Quoting steiner (Thread starter):
4. minimum requirements? Altitude etc.

In an emergency, you do what you have to. When we test we try to be above 15,000' to make sure it's all evaporated and doesn't hit the ground.

Quoting steiner (Thread starter):
5. I guess this is something you clear off with ATC?

You can, but you don't have to.

Tom.


User currently offlinezeke From Hong Kong, joined Dec 2006, 9109 posts, RR: 75
Reply 4, posted (4 years 2 months 1 week 4 days 18 hours ago) and read 2347 times:

Quoting tdscanuck (Reply 3):

You can, but you don't have to.

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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