The realplane131.zip file you have requested: Mods / Mini-Mods / Realplane 1.31 - 815.08kb is not available. Perhaps try browsing all files for the game Battlefield 1942 and upload any files you want to share or are missing. This is the only information we could locate:
To create a more realistic depiction of the planes used in Battlefield 1942, while keeping the fun factor high. Where information was available, real weapon loadouts were incorporated in the mod. All of the planes have updated physics and proprietary new and enhanced artificial intelligence routine settings, so that the ai bots can fly the planes properly. I have also incorporated single player ONLY (will work in Co-op as well) modified maps that feature the B-17.