Thanks Bill.
Something else I found today. I have what was at the time (haven't checked lately..) a complete PAI install. I decided to put some more parking into CYEG to stop the AN-124 disappearing after landing. Every time I added a new gate and checked (at my landing time of approx 13.20 GMT) either another WestJet 737 or Air Canada Airbus appeared :)
So that explained it. Added several more heavy and medium gates amongst others and eventually got a free Heavy/Cargo one down near what I take to be a warehouse at the southern end to the right of rwy 2. Ideal ;)
Then I watched the 124 come in from UWLW from about 20000 ft right through approach, landing, taxy and engine off. Very impressive.
So there you go. This is why I like AI so much - it's fun finding out why it doesn't work and great when you make it do what you want.
If you're interested, here are my TTools details
AC#5511,405,"AN124 AI"
AC#5511,82009,1%,24Hr,IFR,14:02:00,00:50:59,215,R,7251,UWLW,02:06:48,13:25:47,235,R,7252,CYEG
AC#5511,62059,1%,24Hr,IFR,10:14:53,21:03:52,235,R,7253,CYEG,22:05:47,07:44:46,215,R,7254,UWLW