If your unconscious it would probably require 2 people to rescue one to get the climber to the ground and one to support his head to maintain an open airway... Aerial rescue could be to rescue and trapped climber or someone who has damaged there system a unable to descend.
Anyway back on topic.
6 monthly this 12 monthly that. Someone said it's the wrong way round, others have pointed out it's probably misguided and rigging kit should be 6 months, it probably should, at the moment we generally accept it is 12 months. Myself am thinking of moving ours to 6 monthly as I find we our replacing our ropes and slings yearly anyway so this proves to me the intensity of use means the interval of thorough examination should be shortened.
There was a period when I was climbing intensively during this period I could of shortened my PPE thorough inspections interval to just 3 months.
And after the storms earlier this year end of last, some of the rigging we was doing was pushing the limits of the kit we had, no reason why I shouldn't of had the kit go through another thorough check after that period which was only 1 month after it's last.
6 and 12 is not written in stone.
And thorough examinations are only a part of it, daily checks should be performed by the end user and recorded weekly, including introduction of new kit into service and retirement of old/worn/damaged/faulty kit, not just the loler guy every time he comes.
I used to think loler was pointless, and like many thought I do not need anyone to check my own kit and kept it in good condition. Now though I still don't see why "I" need loler my kit is BLING! I just like it I see it's benefit, it's all about being professional and raising the bar in the industry, ok it's not perfect buts it's a step in the right direction.