I agree, nice 28mm will be ok for static park shots.
As for flying shots, don't discount use of the digital zoom. Its going to depend where you are at the airshow, whether it is on an airfield, or out over sea.
BUT LIMIT IT to say 2x digital. you have a 28mm-140mm zoom. I used to shoot a lot at airshows with a 300mm lens on 35mm. 140 with a 2x digital is going to give you 280mm lens. You have 12MP's to play with....the digital zoom will limit the actual resolution you have. I have seen some great 3 and 6MP shots blown up to quite a size.
What size will you be printing out your shots?
If screen resolution, you have more than enough resolution.
If you use the cameras digital zoom limit it to just approx 2x or so of the 8.2x digital zoom on offer in the camera. Keep the digital zoom as low as possible. I would never use 8.2 digital zoom, in fact I usually have D.Z. turned off. Preset your zoom, and keep it there....you may have to follow a few aircraft to find a suitable setting for different sizes of aircraft.
ALTERNATIVELY, turn off the digital zoom and just crop to frame the images on the computer. 12MP is quite a high resolution.
When shooting pan with the aircraft and shoot at a reasonable ISO speed... around 400ISO. I am not familiar with the F100 not sure what control you have over the ISO setting.
Good luck with the show...I had a great holiday once, staying in Marsascala, Malta is a lovely island, and the people there were so friendly and we had a wonderful time....we did however stay away from many of the 'tourist' beaches and clubs.