Hi,I should say why that plane only appear the first day of the flightplan?The plane starts well on monday 08:14 GMT, do his TNG at TNCC and then land at SOCA again. Restart 14:00 GMT, do his TNG at TNCC then TNG at SVBS but never come back at SOCA at 19:19 GMT. And after that the plane never appear again the rest of the week...AC#4,044,51%,WEEK,IFR,1/08:14:18,TNG1/10:39:30,370,F,0470,TNCC,1/10:46:53,1/13:15:46,365,F,0470,SOCA,1/14:00:04,TNG1/16:28:57,370,F,0470,TNCC,1/16:28:57,TNG1/16:58:29,200,F,0470,SVBS,1/17:04:38,1/19:19:59,310,F,0470,SOCA,2/08:57:01,2/13:38:47,355,F,0470,GOOY,3/10:01:53,3/14:35:02,355,F,0470,LFMI,4/07:01:53,4/11:35:02,375,F,0470,GOOY,4/13:56:33,4/18:38:19,375,F,0470,SOCA,5/04:58:29,TNG5/08:54:23,355,F,0470,SBGL,5/11:15:00,TNG5/14:30:18,375,F,0470,SLLP,5/16:47:14,5/20:20:06,355,F,0470,SOCA,6/05:59:39,TNG6/06:23:02,115,F,0470,SOOG,6/06:23:02,6/06:45:11,115,F,0470,SOCA,0/14:06:34,TNG0/14:28:43,115,F,0470,SOOG,0/14:28:43,0/14:50:52,105,F,0470,SOCAAC#4,480,"PAI C135FR FAF - FRENCH AIR FORCE"Does anyone have an idea ?Thx

"TNG1/16:58:29,200,F,0470,SVBS,1/17:04:38,1/19:19:59,310,F,0470,SOCA"Not enough seperation in the time sequence of the FP. 16:58-17:04. You need to have at least 10 min between tng's (and allow time to taxi) or they won't land. They might just fly to the next a/p, or disappear.Mikewww.aimadeeasy.comwww.flightontario.comI'm confused. Wait...maybe I'm not!

Ok then, why does it work for the previous legs ?The plane only does "missed approach", not a proper TNG. I thought that was because it was an IFR flightplan...

"Ok then, why does it work for the previous legs ?The plane only does "missed approach", not a proper TNG. Ithought that was because it was an IFR flightplan..."I'm not sure exactly what the planes are doing for you, and I don't completely understand what it is you're saying here. Is the "missed approach" what they're doing when the previous legs "work"? If that's the case, they're not working. Because the departure & arrival time are the same, they shouldn't land, rather, fly off to the next destination. That's not "working". It's all covered in the TT's help files, and I'll quote,"Any leg of a flight plan can be programmed for Touch and Go

ok thx that helps !

The TTools Readme is actually almost a direct quote from what was eventually released as the TrafficToolBox SDK - with some confusing/ incomplete additions.The CustomRoutes.dat file contains the same information - but with one important difference - the word circuits.MS never uses the words Touch and Go to describe the behavior you can plan / expect.IFR flight plans will not touchdown - they only do Missed Approaches. This is a quite valid procedure because most large aircraft don't really touch down, partially due to the size and partially due to the cycle life requirements. But they do shoot many approaches while training.VFR flight plans do a TNG type behavior - it's really land and takeoff because the aircraft has to slow and end the landing phase of the flight cycle before beginning the takeoff phase.The second thing is that TrafficDatabaseBuilder will not allow the scheduling of more than three aircraft to be doing circuits at a time on a single airport.The 10 minute rule appears to be a programming function. The scheduling is part of the flightplan error checking. You can compile flight plans with Traffic Tools with many types of errors which cause abherrent behavior in FS.My first suggestion would be to change the flight plan to increase the ground time at the last TNG destination as noted.However, I have to note that many military flight planners use fake airports to simulate patrol patterns and spefically do not allow 10 minutes between the circuit end time and the next departure to avoid an aircraft trying to land in a patrol area. They have great success with this method.A second suggestion is to try the flight plan without the TNG flags - and see if your aircraft appear. That will help you really pin down the problem leg.I've used a method in the past where I would remove one leg of a flight plan and test, put it back in and test, etc - to find the problem leg.

You can use this as a reference:David Carter