Yes, stationary. When you lock out a wind turbine you stop the rotation by pitching the blades back to 0 or break them so that they do not generate any power, s

Yes, stationary. When you lock out a wind turbine you stop the rotation by pitching the blades back to 0 or break them so that they do not generate any power, second you apply a giant hydraulic break. But this is not enough. The last thing you do is put a missive steal pin ~6" diameter by 12" long through a very large disk with many ~6" holes that is attached to the main shaft going from the hub (where the three blades are attached) to the gearbox (that has a 70:1 gear ratio). Only then are you able to tie anchors to the generator, bring the ropes up on top of the nacelle and rappel off the 250' to the ground.