Posted in AVIATION NEWS, ROTAX SERVICE INSTRUCTIONS, SERVICE BULLETIN, TECH TIPS Rotax TECH TIPS SB Replacement of oil filter William 2017-11-06 Author: William Related Articles AERO 2014: A Strong Showing for General Aviation in Friedrichshafen Midwest LSA Expo ASB-912-069/ASB-914-051 Alert Service Bulletin Released. Stock Flight Systems introduces Engine Management Unit for the new Rotax® 912iS aircraft engine.