Whenever I do an annual on my airplanes I dread the first hour or so because that is when I check compression. I fly the airplane to get it all warmed up then pull it into the hangar for the annual. By the time I get the cowling off, the engine is cool enough to mess with. When I check compression I write the compression reading on the rocker box cover with a grease pencil right away so I don't forget. Well, here are the results for the Cessna 170 this morning. All well into the 70s which means they are good. The last two annuals I had to pull jugs and it was both time consuming and expensive. This year - piece of cake. My son Richard will appreciate the sigh of relief!
