Originally Posted by
kansarasc
My new helicopter is in for annual inspection. This is a 2020 new R44 Raven I with TT 105 hours. The shop asked me if I want to do above mentioned SB. The SB applies at 300 hours but the mechanic says they recommend doing at 100 hours and then 300 hours apart. This was a surprise to me. As a private part 91 owner/operator I am not required to comply. Cost is $1200.
To other R 44 owners : what is your experience with exhaust valve problems ? Are they common ?
Helicopter is flying fine and there is no roughness at anytime . I do proper warm up and cooldown of engine as per POH. Engine uses 1 QT oil / 8 hours. I am using Phillips XC 20W 50 oil with Camguard .
Apart from cost I am believer in if its not broken -dont fix it concept. When the things gets opened and closed, there is always potential of something not put together properly.
Your suggestions are appreciated
If you want a detailed answer, please let me know. I have on going problems with my R44 Cadet engine exhaust valves, intake valves and cylinders. A nightmare that began on a 200 hr engine, bought new from the factory.