Turbine Repairs?

I was traveling back home the other day, and came across this sight:

As discussed here a couple of weeks ago, there’s been a lot of wind farm activity in the area over the past several months. Mostly this has been occurring in the form of raising new turbines to replace the ones taken down at Mendota Hills. This is different - the turbine you see here is one that has been up for several years.

I’ve never had the opportunity to see this particular event occur - them taking down an entire blade set. However, it is the case that the blades have to be repaired and/or replaced periodically. At times you will be driving by a turbine and see that it has new blades sitting on the ground next to it, for example. Later they will be gone and the turbine blades look shiny and new. There is also a crew that comes out with a cable and basket system - it looks similar to what you see for skyscraper window-washer crews - and appear to paint or coat the blades while they are still on the turbine.

The turbines themselves also appear to have a cable and winch system inside to pull up parts for internal repairs. I’ve seen them on many occasions with the cable coming down out of the back.

I turned the corner and got a closer shot of it coming down. They were actively bringing it down on the crane, so the blade set is lower in this shot:

I suppose the gist of it all - besides the fact that I just find these events pretty cool - is that it shows that these are active, maintained facilities. Crews are out here performing maintenance and keeping them up and running, which seems overall a good sign. And it seems good, in a world where the urban and suburban landscape seems to swallow up more and more farmland, to see activity that makes one feel, at least, like some of this open land will remain open to other, non-residential activity.