There were at least two "Raid over ..." games for the C64
1. Raid over Moscow: This game was complex and very involved. It had action scenes that were Zaxxon-like as well as scenes that were DiscOfTron-like as well as a few other other scenes. In the Zaxxon-esque scenes, the fighter-bomber aircraft had momentum of which you speak in an isometric type view.
2. Raid over Bungling Bay: This game had you flying a helicopter off of an aircraft carrier. You flew around the sea in and amongst a series of islands. The view was top down and the helicopter didn't really have any momentum.
If you are interested in either of these games I suggest you check out the great C64 emu VICE at
http://www.viceteam.org/ Also check out an original C64 hacker group that STILL exists!!
http://www.bitte8bit.de/newremember/htdocs/news.phpSee screen shots below (6 of Raid over Moscow, 1 of Raid over Bungling Bay):