Then, pull up with your right hand to get out. I hung on until he put me back on belay, asked to be lowered, and that was the end of that belationship. Start out with your left hand on the climbers end of the rope, and your right hand on the loose end of the rope. But he imagined it to be an incorrectly-setup belay device, that needed urgent correction! so when I saw him put the rope through the left side during belay check, I never thought it strange. I, on the other hand, am left-handed, and do habitually put the rope through the left slot, though I do know that it doesn’t matter. Turns out, he was told that he had to have the rope through the right slot, since he was right-handed! Imagine my horror when I looked down, and saw him taking me off belay (without waiting for my confirmation that it was ok to do do), to switch the rope from the left slot to the right slot! Since I had checked his ATC before I started climbing, and knew it to be good, I was very confused. When I was at the 2nd bolt, he called out: hang on, I need to fix my belay device! Years ago, I met up with a random guy from the gym at a local quarry. You're right, 2 or 4 minutes makes no difference to the model, but without the upper bound of 4 minutes, the optimisation algorithm pushes the climb towards solutions with very small rates of climb, thereby not modelling realistic ATC-compliant trajectories. The regular side will be the rope going to the climber. Because I got this answer from Dave's response first, I left his as the accepted answer. ATC should not clear an aircraft to the left base leg or right base leg IAF within. Second, if the climb’s descent requires rappelling, the ATC is a more compatible device choice. There is no justification for it, but I have run into this nonsense, under the weirdest circumstances. On the high friction side, you will typically see an icon of a hand holding onto a strand of rope. Example, cleared ILS runway 7 left approach, sidestep to runway 7 right. The rope should come through the slot of the ATC from the top (left), follow the wire keeper loop around the carabiner, and come out the right side of the slot.

Left or right side of atc climbing