Are you sure that a CFM56 powered A318 is quieter than a 146?
Perhaps the light fuel load as only off to Shannon, but yes I do find that surprising.
On the operation from LCY, yes, I am 100% certain that the measured take-off noise for the A318s is lower than for the 146.
The official CAA Quota Count Noise category for an Airbus A318 is QC0.25 on Landing, QC 0.50 on takeoff. A BAE 146 is QC 0.25 for both landing and takeoff
At what specific weights? Now dial back A318 TOW and thrust to get equivalent range. What happens now?
obviously this does not relate to very specific operating circumstances and scenarios.
Quite so.