Is there an stc for a AA1 for a io360 180 hp? Home › Forums › Classifieds › Is there an stc for a AA1 for a io360 180 hp? This topic has 1 reply, 2 voices, and was last updated 2 years, 8 months ago by Richard Harrison. Viewing 1 reply thread Author Posts September 3, 2021 at 18:34 #16236 Robert GibbonsParticipant IO360 September 3, 2021 at 21:16 #16237 Richard HarrisonParticipant I don’t think there is one for the I0-360, but Maynard Crosby has an STC for the installation of the O-360-A4M in the AA-1 series, and a few have been so modified. STC SA1016NW. Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In