The " BC" mode simply sets the flight director/autopilot up to fly the wrong way, essentially. On the other hand, a pilot flying a localizer back course approach inbound to the runway with the basic indicator must turn away from the needle because the shaded side of the localizer is now the left side rather than the right side as it is when you’re inbound on the front course. Glide path equipment radiates field patterns. On a LOC BC approach this will make it fly away from the station, which is a bit counterproductive. the front course of the localiser necessary for CAT I and higher, a back course is not radiated in Australia. navigation tbm930 msfs2020 LOCBC In this video I show the tips to successfully complete a localizer back course (LOC BC) Show more. If you have an HSI, the HSI wil take care of the reverse sensing if you put the inbound course in the HSI, but the autopilot/flight director will still get confused and want to fly the 'correct' front course heading. The back course mode is selected by pushing the GP BC button. Since a localizer is only aligned for one specific heading, to approach it from the wrong way(as you have to do on a Localizer Back Course Instrument Approach Procedure) requires you to think backwards and deal with the 'reverse sensing'. The " BC" mode lets you fly a Localizer Back Course. The backcourse button should merely reverse the needle deflections (since you are flying a reversed localizer) so you should press it before you intercept the localizer. The autopilot/flight director doesn't care which side you are on. The proper time to track a backcourse is when you are cleared for a BC approach. There is no need to do that when you pass a station, as you just go from tracking inbound to the station(TO) to tracking outbound(FROM). Back Course Localizer Approach - An interesting variant of the LOC approach is the LOC-BC or 'back course' approach. ![]() ![]() There is no need to have a reverse for the "NAV" function, because to reverse the VOR needle, all you do is turn the CDI knob 180 degrees and it works fine, just backwards. You guys are getting awful close, but still no cigar.
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