If you want to have the plane drop the bombs instead of camcreating them (thats so fake), use the fire command like so-
myA10 fire ["LaserGuidedBombLauncher","LaserGuidedBombLauncher"]
Each time you use this command the plane will drop 1 bomb. If you set the pilots combatmode to "BLUE" and behaviour to "CARELESS" he won't try to use the cannon and mess up your bombing run, but he will still drop the bombs.