Since January, 1978, United Airlines has been using the PLATO computerized system to manage an individualized, criterion referenced instructional (CRI) program for newly hired pilots. This program was designed utilizing the CRI concept to take advantage of trainees' existing knowledge repertoires, the different rates at which trainees learn, and for scheduling flexibility. Criterion tests, used to measure expected performance, are presented on the PLATO Computer Managed Instruction (CMI) system; learning resources are printed materials, slide-tapes and video-tapes. The next program that was developed and implemented in January, 1980, Initial First Officer, utilizes both the CMI and Computer Assisted Instruction (CAI) features of PLATO. Also based on CRI design, this program is presented on PLATO as CAI lessons yet still contains the advantages of CMI record keeping. In addition, no external media is necessary, the trainee is provided immediate feedback, and appropriate learning material is given on the spot.