Flight School is the closest thing to Pilotwings on the App Store. No sound in the game though... Check the appstore link here: http://toucharcade.com/link/http://itunes.apple.com/us/app/flight-school/id339393811?mt=8
Yeah my bad. I thought Pilot Wings was an iOS game so I typed it into the AppStore search, and yeah..
Biplane: http://itunes.apple.com/gb/app/biplane/id304891089?mt=8 Lite version: http://itunes.apple.com/gb/app/biplane-lite/id311584798?mt=8