Dumping Fuel

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Member for

20 years 11 months

Posts: 9

I have came across this term 'dumping fuel' quite a number of times when airliners have to make an emergency landings. Do they actually dump the fuel into seas and pollute them or do they release drop tanks like they do in military planes? Can someone enlighten me? THanks in advance.

Original post

Member for

20 years 11 months

Posts: 583

It sprays out it a mist

Member for

24 years 3 months

Posts: 3,672

yea fuel dups come out of small pipes in the wing fuel tanks, which as stated above creates a fine mist, much of which evapourates. Yes it's a pollutant, but a rare occurance and quite frankly a nessecity - not a good idea to land a strick a/c at 130knts full of fuel!

Member for

24 years 3 months

Posts: 6,072

As we are on the "spray" terms, this is a silly question with probably one of the most simple answers... when a plane is high up in the sky, why does it leave contrails behind it?

Sorry to ask a silly question, but I really dont know! :confused: :rolleyes:

Member for

24 years 3 months

Posts: 3,672

A330, Simple way to think of it - winter day, you breate and the air produces a condensation "Stream", Well think -50 degrees c, and a jet engine with an EGT of around 600 degrees, just a bigger magnitude!

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24 years 3 months

Posts: 3,538

Couldn't have put it better myself!

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24 years 3 months

Posts: 3,672

cheers Wys!

Member for

24 years 3 months

Posts: 6,072

Cheers EGNM, see I new it would be a simple answer...:p

Cheers, from

Mr tHICKO:p

Member for

24 years 3 months

Posts: 3,672

No probs A330 - if u dont ask, you dont learn!