Yes, on some maps it is indeed hard to land the aircraft, I give you that, but the airborne repair should not function at all; I know it is slow but if you fly rather slowly, you can get very much health. As the 20mm-shelled FlaKs have a really hard time to shoot down in planes most of time (I say most of time because sometimes it's like you down them in less than a second somehow), they should repair a bit longer. It always frustrates me when hitting a plane with FlaKs only to receive the ultimate revenge if I don't realocate asap. Even more frustration when hitting one with the time fuses (red marker) and doing nearly zero damage...