Was recently renting a C-172SP from a local flight school and had a bit of an odd incident.
Arrived early for my 8am flight time, plan was to go for a short hop and a 100$ breakfast with a buddy. It was a nice and cold -27 and this school has a history of forgetting to plug in aircraft overnight. Anyways, we arrived to see the plane already sitting out on the line rather than in the hangar. After a normal walk around and preflight, we went out and I got my buddy seated while I went to the front to pull the prop through a few times. The idea, so I've been told, is too loosen up some of the oil while checking to see how loose it actually is. Hopped back in the cockpit and began the pre-start, right as I go to turn the starter I see the CFI of the school running down the steps waving his arms...He runs over and begins to get in a big huff about hand turning an engine over, how dangerous it is etc...with slightly too many profanities for that early in the morning haha. After appeasing him and swearing I'd never do it again, everything continued as normal. The eggs were still worth it IMO!
Brings me to my question, was I wrong in hand-turning the prop (mags and master were confirmed off)? I dont have the POH with me right now, but im certain this is in there somewhere.
What kind of cold-weather procedures do you guys have?