I've had FD4 for almost a year and never noticed that.  Goes to show just how much I use the Abacus aircraft (which didn't impress me all that much - more like good freeware than payware quality).  BUT the catapult and arresting system (and carriers themselves) are the reasons I bought the package, so no real complaints. 

Plus, I learned how to add arresting gear to other airports, so it is possible (with Notepad) to add cable & catapult zones to anywhere, so you can practice carrier ops on land.  The only bad side is that it would have been nice if Abacus had included that info in the manual.