In order to provide a cost effective simulator training environment, a number of variables must be optimized to meet training requirements with minimum cost. One such variable is the field-of-view (FOV) of the visual display. This study investigated the effect of field-of-view on pilot performance for low level flight and an airdrop in the C-130 weapon system trainer. The study was performed using two different field-of-view configurations. The conditions were wide field-of-view that used all six windows to provide a 160° H by 35° V visual field and a limited field-of-view that used the forward four windows to provide a 102° H by 35° V visual field from the left seat (pilot's). The tasks chosen by subject matter experts for the study were thought to be those most likely to require information from the peripheral windows. Automated pilot performance measures and eye position data were collected throughout the study. Twelve experienced C-130 pilots performed four trials over two different routes under both field-of-view conditions. The pilot performance data showed no strong or consistent effects due to the field-of-view manipulation. The eye position data revealed an increased use of the front window and instruments in the limited field-of-view condition and a decreased use of the window to the left of the pilot. The study shows that the peripheral windows may not be required for experienced pilots, but if present are used, and if absent, alter visual behavior. Based on the results of the study, a preliminary conclusion would be to provide a wide FOV when the training objectives include tasks that use a large amount of peripheral information. Before any final conclusions can be reached regarding field-of-view requirements, the use of the windows from the copilot's position should be addressed, as well as the value for skill acquisition for less experienced pilots.