I've recently purchased a 2011 172R (160HP) with a G1000 on the sellers promise that I can apply a propeller switch and modified air intake STC to get the derated engine back to 180HP. However, the holder of said STC, AirPlains, shows the kit is only applicable to 1996-2004 172Rs without a G1000. Are there any other manufacturers that can apply this conversion on a later-model 172R, or am I stuck with my 160HP?
Not a solution, but I looked at this a couple years ago. I have a 2005 172R G1000 in a flight school and students tend to go to the 180hp planes, so I looked into the upgrade. I did find that Cessna did a STC for a limited, sequential group of Serial Number 172R G1000's. I believe they might have been done for Embry Riddle, but not positive. I actually found this out from FAA when I was calling them about a STC or Field upgrade. Got to the same point as your e-mail string. Bottom line - it has been done. It can be done. When I called Cessna about the details they did tell me the block of SN's it applied to, but after that they would not share anything. After looking into this again today, talking to Air Planes (they are very nice, and they would love to be able to sell a kit for this!) and remembering my conversations - I think I'll do some digging again. I'll post if I find anything Mark - 191CA