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.