The hubtraincenter_1.1.3_sp.zip file you have requested: Maps Levels Missions / Single Player / G to H Titles / HubTrainCenter 1.1.3 (Single Player) - 29.04mb is not available. Perhaps try browsing all files for the game Battlefield 2 and upload any files you want to share or are missing. This is the only information we could locate:
HubTrainCenter 1.1.3 - Singleplayer Version, a SP Map for BF 2. This map is playable 8on8, but build for the purpose of training.
f0706v1.1.3sp? SinglePlayer support added, small updates.
Just decompress in your BF2-root-directory, the folder HubTrainCenter will appear in /mods/bf2/Levels.