Thanks for these responses.
My reason for enquiring is that we are about to qualify a new FFS at Std 1.9 (Std 2.0 data was only released this week) and somewhat surprisingly the OEM supplied data is still using the same mass properties data as 1.8 therefore no weight changes for sharklets or payload and it is peculiar that whilst the provision for sharklet performance has been made within the 1.9 aerodata, it’s not active!
Also the additional 100 nm range, at least from an aerodynamics standpoint, accounting for sharklets and the improved efficiency they’ll bring will not be reflected in a 1.9 FFS and the range will remain the same as Std 1.8
We are also getting conflicting comments from crews on the handling differences between aircraft equipped with and without sharklets and comments from a wider audience are thus very welcome and helpful.
Whilst we won’t be the first to qualify a Std 1.9, these ‘issues’ do seem (to us) to go against a number of regulations.