I just tried a flight that I have made numerous times in 3 different aircraft, IRL, Manhattan KS to Tulsa OK. I used the WT CJ4 for the first time on this which was probably my 1st mistake as I am not used to the AP in it. But getting to Tulsa was not the issue. The ILS Approach was all kinds of messed up. The route had me coming in lined up on runway and then about 10 miles North of airport it had me doing a 360 clockwise loop that took me about 10 miles North. It caught the GS on next approach and then got to same point and did another elongated loop to the North, again. Both loops were showing on the map applet. Unfortunately the AP had me keep descending even though I was doing the 2nd loop and I didn't get the AP off in time to keep it from stalling. I did NOT use the CJ4 FMS to enter the FP, I did that in the World View of MSFS so that could be my 2nd mistake. I have noticed a lot of these weird loops on ILS approaches while I have been doing an ATW trip with the TBM. Just a weird zig zagging loop right before the runway. Am I doing something to cause this??

Edited December 7, 20205 yr by Mikeingreen

Sometimes if you zoom in world view you will see something messed up on the plan. Sounds like you might have still been in nav mode not apr, and/or didn't switch the cdi from gps to localizer or both. Plus, lately some of the AC are not catching the ils. just did a flight in the 208 and I had to repeatedly switch back and forth from nav-loc and apr on-off-on before it finally locked on the ils. just make sure you come in low to give yourself time before you get below the gs and switch to heading mode when you get close to the ils to get lined up close before switching to apr. Suggest you use a third party flight planner like littlenavmap, or at least stay away stars and such in the buggy msfs planner. Even plans imported from littlenavmap that use stars sometimes get all messed up in the sim, looping, etc.

Edited December 7, 20205 yr by desbean

I am going to take a look at using an external program. I admit I have not before as the internal does the work and is so much faster than getting the Approach Plate and then using Skyvector to find all the WP you need on the route. This is the first time in a sim I have been trying to figure out this IFR stuff. Before I always just flew VFR following the GPS line, or if I was feeling on the edge, I hit ALt Hold and Hdg Hold and flew on the line by adj Hdg.This FP stuff is new.

14 hours ago, Mikeingreen said:

The ILS Approach was all kinds of messed up. The route had me coming in lined up on runway and then about 10 miles North of airport it had me doing a 360 clockwise loop that took me about 10 miles North.

You were probably doing the ILS18L approach? The published procedure has a clockwise holding pattern, which is a way of entering the approach without ATC guidance. This is quite common. To avoid this in the CJ4, you need to switch your nav source from FMS to VOR1 once you are on the localizer. Then the aircraft should ignore the loop, and fly directly inbound on the localizer. You should be level at 2400 feet, and would intercept the glideslope at waypoint OWASO. Airnav.com or Skyvector.com are good sources for free approach charts for US airports. Here is the link to the ILS18L chart for KTUL

https://aeronav.faa.gov/d-tpp/2013/00432IL18L.PDF

iI was actually using ILS18R as that is the side that GA parking is on but they are close. I didn't do any switching and did things like I have been doing with the G3000 in the TBM. Leave things alone and just click approach before Transition point. Like I stated, pilot error. I am familiar with SkyVector but that only helps in USA. I have LNM but have not really checked into what all you can do with it but will give it a look. I had high hopes about being able to just use the internal flight planner as it makes it so easy. But I am finding out it is just not reliable enough to count on.