The purposes of the AAP 1/AAP-2 mission were (1) to conduct a low-altitude, low-inclination, Earth- orbital mission with a crew of three men, open ended to 28 days' duration, using a spent S-IVB stage as an OWS; (2) to provide for reactivation and reuse of the OWS during subsequent missions occurring up to 1 year later; (3) to conduct inflight experiments in the areas of science, applications, technology, engineering, and medicine; and (4) to qualify man, evaluate his support requirements, and determine human task performance capability on long-duration manned space flight missions.

Objectives of the mission were to (1) demonstrate rendezvous and hard docking of the command and service modules to the multiple docking adapter; (2) determine the feasibility of operating the OWS as a habitable space structure for an extended period; and (3) obtain data to evaluate space flight environmental effects on the crew of a mission duration of 28 days.