I have a copy of Mehrabad intl. OIII installed in FSX with acceleration produced by Sajjad Seifpoor. It is a beautiful scenery but my problem is that the AI aircraft I have only appear from dusk until dawn. I have a copy of Imam Khomaini International Airport OIIE installed by the same producer but have no problems with the AI during daytime hours. Could somebody tell me why I have a lack of AI aircraft at OIII during daylight hours please.