scott_l
Well-Known Member
This happened in a Twinstar and this is what I wrote to maintenance. What do you guys think happened?
I flew XXXX this afternoon and found the right engine was having random drops of RPM by about 30 RPM at full power almost every minute. When I reduced the throttle(we reduced to cruise climb power 25”/2400 RPM) per the oscillating RPM memory item the frequency decreased but it was still happening every few minutes. When we reduced to cruise power(21”/2200 RPM) it seemed to stop, but on approach I found the right governor was maintaining the RPM plus or minus 10 RPM while the left maintained RPM right on. Through this time nothing was out of the ordinary for any engine indications other than RPM.
Not a huge problem but I was just wondering what the cause might be.
I flew XXXX this afternoon and found the right engine was having random drops of RPM by about 30 RPM at full power almost every minute. When I reduced the throttle(we reduced to cruise climb power 25”/2400 RPM) per the oscillating RPM memory item the frequency decreased but it was still happening every few minutes. When we reduced to cruise power(21”/2200 RPM) it seemed to stop, but on approach I found the right governor was maintaining the RPM plus or minus 10 RPM while the left maintained RPM right on. Through this time nothing was out of the ordinary for any engine indications other than RPM.
Not a huge problem but I was just wondering what the cause might be.