I tried this map for the first time last night, and it was one of the best/most challenging maps I've played so far. I believe the plane you are on is Air Force One, and you must clear the plane of tangos in 20:00. I had a blast running it with a few other SAS boys, and we got our asses handed to us numerous times (pardon the expression). Tangos seem to be much smarter and will hunt you down once they know youre on board, and they will throw flash/gas/frag grenades to fight you. The many doors and narrow hallways make for deadly crossfire and blind corners up the ying-yang. Proper element formation/teamwork/cover is recommended/required to beat this map properly. We didnt win once :ohwell: . If you're looking for a challenge, I suggest you download it. It can be found (as far as I know, only at this location) here http://www.rvsgaming.com and the map is simply entitled, Airborne.
P.S. EDIT: I need to add that rvsgaming.com requires you to register in order to use the download feature, so if anyone else knows a better site to download from, please post it here!