Ghattig

I’ve got one too and love it as well, $575k Sent from my iPhone using Tapatalk

@mlm20c This is the McCauley STC# SA00956WI the plane currently has https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/790d952c09b8209e86257e26006f505f/$FILE/SA00956WI.pdf as referenced by @cruiser earlier STC -- SA02988AT indeed does increase the RPM/HP https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/a758a46bd17ea47a86257014005440aa/$FILE/SA02988AT.pdf Thanks Gentlemen!

2400 RPM - that's why I was seeking the STC information... :-)

@Mlm20c exactly

@Hank the plane already has the McCauley STC# SA00956WI and I was trying to determine exactly what the prop added. Only for TKS yet also assume it helps with takeoff and climb, the STC does not add additional RPM/HP

Thank you, That is what I thought and have seen the STC link that you have provided. I was finally able to find the actual McCauley STC# SA00956WI through the search feature on link you provided and you are absolutely correct!! It is only for CAV Ice Protection and offers no change to HP. Thank you @Cruiser

I have found several discussions regarding the M20S upgrade STC using the Hartzell 3 blade prop to increase the power output of the engine but cannot find the specs on the McCauley STC# SA00956WI, does it increase the horsepower output? Any sharing of knowledge would be greatly appreciated! Thanks!