HellcatF6F

Switch right MPD (display) to the ASE (Aircraft Survivability Equipment) page and you can turn the jammers on or off manually or select "Man/Auto." You can also select "Autopage" so it will come up when an enemy radar tracks you, if you switch that MPD to another screen. You can either use the Action Menu or crosshair (User Action 20, has to be bound in the game options) to work the system. The jammers only last 60 seconds before a 30 second cooling period.

My strategy for Pin Drop (though you can read a more thorough version in the strategy guide) The M230 can destroy aircraft. Usually no more than a few hits versus BI made aircraft. The gun is not a sniper rifle and muzzle energy diminishes at range, so use larger bursts (B key) on more distant targets. Stingers would ruin much of the mission's suspense. So would Longbow HELLFIREs.

It should be Numpad 0 by default.

You shouldn't engage in combat that mission if it can be avoided, but always remember to not only operate near cover and have jammers at the ready, but also target them and ZUs and ZSUs first. The target filters help a lot there.