I scheduled an exisiting plane within my FS2004 aircraft folder for AI traffic. The plane is visible when I look into my aircraft selection panel. However, when I schedule it into my AI traffic, it is the only plane that I scheduled so far, the aircraft does not show up on the airport. Not even on the time that is suppose to leave.
I am 100% sure that I scheduled it correctly and i did compile it into the traffic.bgl.
All other schedules never gave me any problems.
What can be the reason for this?

pardon my ignorance but i'm having a bit of a problem with the way some are using the word "scheduled" when referring to AI flightplans created with TTools.

The use of the word: "scheduled" to me refers to shceduled airline flights as created or used by addon programs dedicated to this purpose; e.g., PAI (freeware), Mytraffic or Ultimate Traffic (payware)

IMO, simple AI "traffic" or "flights" should be referred to as such so we're all on the same page when trying to help someone.

anything one wants to know about simple AI flightplan  flights can be found HERE

Bill

P.S. I really can not determine from the original post which flights are causing the problem -- if ATC is involved, one could presume they are scheduled airline flights and the PAI Installer should fix it.

That is usually the case. These have to be a exact match or otherwise no go