Re: Question: Fuel Dumping

Date:         09 Mar 97 12:39:42 
From:         ee3carb@ee.edinburgh.ac.uk (C.A.R.Beveridge \(Colin\))
Organization: Electrical Engineering Department, University of Edinburgh
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In article <airliners.1997.345@ohare.Chicago.COM>, Pete Finlay <pete@meads.demon.co.uk> writes:
|> In article <airliners.1997.268@ohare.Chicago.COM>, "Brian A. Reynolds"
|> <bareynol@cca.rockwell.com> writes
|>
|> <<my stuff snipped>>
|>
|> >It is my understanding that Airbus aircraft do not have the capability
|> >to jettison fuel.
|>
|> I haven't heard that one before. Where did you hear it? It doesn't sound
|> correct. I suspect that the A340, for example, being a long-range
|> machine, must have a max. landing weight lower than max t.o. weight, and
|> they would therefore need to dump fuel if something went wrong after
|> take-off.

The A340, and presumably the entire family also, do indeed have fuel dumping
capabilities. I know this because I read a UK incident report on a Virgin A340
departing London for East Asia which suffered a tail strike and needed to land
again. The report mentions that the fuel dump was unsuccessful because of a
faulty fuel level indicator - the computer thought the tank was nearly empty
and wouldn't allow the crew to dump any fuel! The Airbus engineers talked to
the crew on radio for a while and they tried various programming approaches
but fuel dumping was just not possible. So the plane had to land at MLW,
presumably after an hour of circling enough fuel was gone.

But fuel dumping is in the design, and they've changed the logic on the sensor
now.

--

Colin A R Beveridge

Economics Undergraduate & Airline Industry Specialist
The University of Edinburgh, United Kingdom
http://www.ed.ac.uk