Autopilot unable to track a localizer

BernieV

The autopilot seems to be unable to track a localizer very well compared to real life performance. The AP is slow to recognize and/or correct small deviations from the localizer course. This can result in either drifting further to one side of the localizer course or a slow correction that flies through the localizer course and overshoots it. The problem gets worse as you get closer to the runway (as the rate of deviation tends to be higher requiring quicker course corrections).

Setup: Establish aircraft on inbound on localizer outside the outer marker. GPS CDI option set to LOC using Garmin 530. Use EFB to select GPS type Garmin 100. AP source: NAV 1. AP:on. Heading mode enabled. Heading bug set to localizer course. Nav1 tuned to localizer. AP mode set to LOC NORM. The closer you get to the runway the worse it tends to wonder off course. The behavior seems to be independent of the NAV used.

copper

I think you should open a support ticket for that, so they track and hopefully fix it.

BernieV

Thanks! I just realized this is not a support forum. I'm new to Just Flight products. Head over heals in love with the Arrow so far!

mobbe123

@BernieV
Hi it seams the same here when I do an ILS. I end up way of course.
The needle starts to move but never centers properly.

copper

@BernieV @mobbe123
Which mode do you use? Maybe try OMNI or NAV instead of LOC, I've heard LOC doesn't work in some cases but didn't try it myself yet.
At least it could be a workaround.

Matchstick

@copper said in Autopilot unable to track a localizer:

do you use? Maybe try OMNI or NAV instead of LOC, I've heard LOC doesn't work in some cases but didn't try it myself yet.
At least it could be a workaround

I'm struggling to get LOC to work as well, it frequently just wanders of in a 2 minute circle ignorring the localiser entirely.

However I've had more success using OMNI to initially catch the localiser, setting heading bug to localiser header then switching to Heading and finally swithing to LOC.

I haven't tested it enough to say it truely reliable but it's worked for me so far.