PPRuNe Forums - Slow down on a320

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mpvincent

29th January 2014 08:17

Slow down on a320

Hi there

Newbie here. I have a question regarding fuel use on an a320 sector 3.5 hours long. Would it save much fuel if the sector was flown at a Lower cruise speed so it was flown over 4 hours? I know there will be additional costs such as crew time and a negative impact on aircraft utilisation but just interested in whether it would save fuel, use more fuel or negligible effect.

Many thanks.

3 Point

29th January 2014 11:05

Depends ...

If it was already planned at economical "Long range cruise" speed then slowing down any further will use more fuel. If it was planned at a high speed then slowing down will save quite a bit.

3 Point

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