A project was undertaken to integrate the 2F87F operational flight trainer into the program for training replacement patrol plane pilots. The objectives were to determine the potential of the simulator as a substitute environment for learning aircraft tasks and to effectively utilize the simulator in pilot training. The students involved in the study were recent graduates of the Navy undergraduate pilot training program. Training was accomplished in the flight replacement squadron setting using squadron resources, simulator, and flight syllabi. Conclusions of the study include the following: the 2F87F simulator was an effective substitute for the P-3 aircraft in the transition training of pilots; performance in the 2F87F simulator was predictive of later performance in the aircraft, and training tasks to proficiency in the simulator prior to aircraft training significantly reduced the time required for students to become proficient in the aircraft. (JH)