md88MD-80 Rotate USA JET Airs Installation: 1-step Download the two folders: ,,USAJET,, and ,,NML,, 2-step Copy and past all files from ,,NML,, in to ,,USAJETThe MD-88 on the other hand is a more computerized MD-80 with EFIS displays, increased windshear detection, improvements in the airframe and a better flht management