I have the add-on Flight Deck III in my FS2002. During a "taxi" scenery, I roll the aircraft to the catapult and position it for taken off. The jet blast deflector automatically raises up. However, whenever I try to arm the catapult (Shift + F9), I get this message that the wheel brakes are not engaged so the cat does not arm. What keys do I use to engage the wheel brakes? This problem does not occur when on the "launch" scenery mode.

Thanks

Jim is right. You need to lock the brakes on before you can arm the catapult using the ArrCab program.

Ozzy