Which form is used to request a leave of absence in the U.S. Air Force?

The appropriate form to request a leave of absence in the U.S. Air Force is AF Form 988. This form is specifically designed for service members to formally request leave, providing all necessary details to facilitate the approval process. It includes information such as the type of leave, the dates requested, and the reason for the leave, ensuring that supervisors have a clear understanding of the request.

The other forms listed serve different purposes. AF Form 1042 is used for reporting flight duties related to the physical qualifications of aircrew members. AF Form 220 is associated with performance reports for various personnel assessments. AF Form 910 is utilized for documenting Enlisted Performance Reports, focusing on duty performance evaluations. Each of these forms has its specific administrative function, which is why AF Form 988 stands out as the correct choice for leave requests.