Just wanted to announce that my Short S.23 'C'-class Empire flying boat has reached some kind of flyable beta stage. I think the hydrostatics for the hull are a first for FlightGear (the hydrodynamics OTOH are still incomplete).
Preview for FlightGear/CVS
[EDIT]Links removed 2010-08-10, see post below for the current status.[/EDIT]
(Note: there is risk of running into missing files unless you have a complete data checkout. The error messages should give a hint on which aircraft you need to pull if you don't have them.)
To get out of the water make sure to fly straight - plowing along sideways through the water increases the resistance. (Yes, currently every surface is treated as water :)
[EDIT]I should mention that most of the instruments are from the Spitfire IX. The store of great looking ready made instruments in FlightGear makes cockpit creation a pleasure.
Latest update: 2008-11-22.
[/EDIT]
Cheers,
Anders