davefr Posted December 14, 2018 Share Posted December 14, 2018 Let's say I'm approaching an airport and I want to use ILS to guide me in. Am I correct in assuming I hit VORLOC when the ILS is intercepted and comes alive as indicated by the course and glide slope deviation indicators showing up on the Primary Flight Display? It appears that VORLOC turns off HDGSEL and APP turns off ALTHOLD at the appropriate times and guides the plane in. Here's my question. If I jump the gun and turn on VORLOC before the ILS is "alive" the autopilot immediately turns off HDGSEL and the plane makes a violent turn. Can anyone explain what's going on when this happens? What's the autopilot trying to do if VORLOC is enabled before an ILS is intercepted.? P.S. I'm flying using VOR's and ILS. (not GPS) TIA Link to comment Share on other sites More sharing options...
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