A competent chopper team will simply take the Mi-28 behind the TV station (or over the sea towards the Mi-28 helipad) and out of AA/AT/.50 cal range, then blow up the cobra from a safe distance and then repair. If it's a rape-fest, then the cobra should never get off the ground again regardless of whether you have to run and repair -- there's loads of AA blind spots where you have an age to pick your spot and blow up the chopper on the pad prior to repairing. Same goes for the Mi-28. It takes almost exactly the same time for a chopper to respawn as it does to fly all the way back to the helipad, repair and then get back in TV range. There's pretty much no excuse for letting a chopper back up on sharqi short of making a huge mistake in terms of strategy or timing.Actually, you just need to spawn AT and have one guy on the AA site. Let them kill you as many times that they need to and keep firing the rockets away. Eventually, you'll take them down or they'll go reload, leaving you plenty of time to get up. Just takes a good pilot to get out of dodge to engage their pussy asses.
I'm not making a judgement as to whether you should turn the TV station roof into a bloodbath, just pointing out that if you are half-decent and so inclined, an enemy chopper should almost never get off the ground on sharqi after the first kill and that includes if you have to run for repairs.