???? Do you know the rules of engagements on the border???? Just so you know, there is an agreement that in peacetime (which unfortunately it is, even with shelling from both sides), aircraft, if by mistake get to the border, each side will give them the benefit of the doubt and will allow them to turn around.
So up to 5 KM's for jets are considered normal. For the heli's, there would be a limit much smaller than the jets obviously as the chopper can turn within a few hundred feet, but the jets require a few KM's at the least, due to their speed.
So this right here, is like 200-300 feet, which is a human walking for 2-3 minutes? Choppers are much bigger and obviously have speed. So if the pilot really tried to stop and messed up in getting directions from his GPS, its normal to skip the border by a couple of hundred feet. It shouldn't happen every day, but its not a sign of an attack or something.
At this level, the first responsibility lies on the SAM systems and shoulder mount AD units. The PAF has nothing to do with a helicopter coming in 100 feet and going back. Please don't bash the PAF!!