Here a short update at first:
- I had to remove all those virtual airlines (like Landmark etc.);
- since I am mostly flying in Europe, than in the U.S., I have new textures for the default 737, Europe textures (LH, BA, Turkish, LOT, HLX etc.) - which are doing fine;
- because I am using WOAI as well as PAI I afterwards re-organized the overcrowded European big Airports I am using in Germany, France, Belgium, Italy, Luxemburg, UK, Austria and Switzerland: as a result no more VFR is leaving / arriving those international airports, no more Cessnas & Mooneys, and only "real" airlines are coming and going ... looks good!
- the small single-engine VFR airplanes all got correct callsigns, for example in Germany it's mostly D-Exxx, in Austria OE-Exxx, Switzerland HB-xxx and so on ... finally the flighplans were modified, coming and going to the minor airfields;
- for the IFR: mostly same was done for the big airports in the US, KLAX, KJFK, KSAN and some others.
What is left to do - and what I cannot solve without your input:
1.) when taking a look into the "aircraft030528.txt" (decompiled with TTools from the bgl-file) I have the "AC#32", "AC#33" and "AC#34" as well as "AC#46", "AC#47", "AC#48" (Dash 8-100s and MD83s) which I cannot find anyweher else to change them away from the virtual textures up to real textures ... where are those aircrafts to find? How to change the textures?? Any input??
2.) I still do not fuly understand the Flighplans030528.txt lines: ok, here we go -
AC#50,N11288,71%,6Hr,VFR,01:52:38,04:07:34,145,F,4099,F56,04:52:41,07:07:37,135,F,4100,KLI
... means:
AC#50 - aircraft number 50, ok!
N11288 - callsign, ok!
71% -

6 Hr -

VFR - ok!
01:52:38 -

04:07:34 -

145 - Flighlevel, OK!
F -

4099 - Fligh Number, ok!
F56 - departing from, ok!
04:52:41 -

07:07:37,135 -

F -

4100 - Flighlevel, ok!
KLI - arriving at, ok!
Many good landings,
WP :-)