FS2004 – Default Boeing 737 Improvement flight2000it 8 years ago FS2004 – Default Boeing 737 Improvement. Modiffied default Boeing 737-400 with few repaints. The flight dynamics have been modified so they resemble PIC 737 Classic – so quite realistic. 113.5 MB FSX/FS2004 – Boeing 737-700 BBJ OneFSX/FS2004 – Boeing 737-700 Air BerlinFSX/FS2004 – Boeing 737-800 Lauda Air