hello folks
So my aircraft engine (continental) is at TBO 2000hrs now with last 4 years of consistent engine compressions on all cylinders at 74 and above on all cylinders including engine oil analysis showing all green....now is going thru an annual inspection and according to this A&P the compressions are 70,70,60, 64, 70, 69.....I know this is still ok but why such of compression drop in 7 months since last checked? is he doing it correctly or is my engine starting to show signs of retirement.....he told me he ran the engine 45mnts then he checked the compressions....I’ve seen other A&P’s doing it on cold engines....when is the best reading....
Thnk you
So my aircraft engine (continental) is at TBO 2000hrs now with last 4 years of consistent engine compressions on all cylinders at 74 and above on all cylinders including engine oil analysis showing all green....now is going thru an annual inspection and according to this A&P the compressions are 70,70,60, 64, 70, 69.....I know this is still ok but why such of compression drop in 7 months since last checked? is he doing it correctly or is my engine starting to show signs of retirement.....he told me he ran the engine 45mnts then he checked the compressions....I’ve seen other A&P’s doing it on cold engines....when is the best reading....
Thnk you
