liuk
Active Member
Hello all, I recently had both of my slick mags taken off and re-installed for the 500-hour inspection. I was suggested to be more vigilant about the mag checks at least in the first 10 hours. During my first flight after the mag installation, I did both the ground check and in-flight LOP check, and I don't really understand the results. For reference I have an O-360-A1A engine, with slick mags on both sides (left mag has impulse coupling).
The ground check was pretty good. The test was done at 1700 RPM, and both mags showed 50-60 RPM drop. During the in-flight test, although the engine seems to run fairly smooth with either the left or the right mag, the power reduction and the EGT rise are much more pronounced when the right mag is turned off. By power reduction, I mean that I could feel very strong deceleration when the right mag was turned off. Below are the EGT numbers I wrote down during the test.
Please take a look and let me know if it's something worth worrying about, and/or if there are some further tests I should be doing. Thanks!
The ground check was pretty good. The test was done at 1700 RPM, and both mags showed 50-60 RPM drop. During the in-flight test, although the engine seems to run fairly smooth with either the left or the right mag, the power reduction and the EGT rise are much more pronounced when the right mag is turned off. By power reduction, I mean that I could feel very strong deceleration when the right mag was turned off. Below are the EGT numbers I wrote down during the test.
Please take a look and let me know if it's something worth worrying about, and/or if there are some further tests I should be doing. Thanks!