The Aircraft Instrument Comprehension (AIC) Program is a self-instructional program designed to teach undergraduate student pilots to read instruments that indicate the position of the aircraft in flight, based on sequential instructional stages of information, prompted practice, and unprompted practice. The program includes a 36-item multiple choice test designed to assess the students' ability to read a compass and an artificial horizon. Three developmental tryouts among Air Force Reserve Officer Training Corps students refined the test and the program. The first was conducted with three students who worked with the materials individually in a small observation room, and on the basis of this tryout revisions were made to control the amount of exposure to the task prior to instruction. The second tryout of the program was conducted with 25 students who worked through the materials in a large classroom; on the basis of this tryout the program was revised to include additional practice items, and a pretest was developed to assess student improvement as a result of instruction. The final tryout was conducted among 32 students working in a large classroom, and both the pretest and the AIC test were found to be acceptable. (JR)