7 SYSTEMS: INTERNATIONAL SPACE STATION PLANNING—A ROADMAP TO GETTING IT ALL DONE CHAPTER 1 It does not contain the specific time in which an activity is scheduled on the given day. The OOS is developed over the course of several months, culminating in a final version that the IEPT members and ISS Program management review and approve at I-1 months. Planning takes into account resource availabilities (primarily crew time and, on occasion, power, etc.), trajectory data (i.e., solar beta angle, Russian ground site availability), and other defined constraints. Upon approval, the final OOS shows the plan for accomplishing increment objectives along with a detailed activity database. It should be noted that mission planners use the results from the development of the Increment Overview and the Final OOS for updating and developing the IDRD. This ensures the requirements going into the increment execution phase are aligned with the feasibility of implementing these requirements. Execute planning describes the phase of operations from publication of the Final OOS through the end of the increment. Execute planning deals with development of plans for execution by crew and ground control teams based on the OOS (Figure 2). The long-range planning (LRP) team develops these execution planning products. The OPS PLAN team is responsible for executing and replanning while on console in the Mission Control Center (MCC) in Houston. Both teams require significant interfaces with disciplines that are both internal and external to Johnson Space Center to generate and execute effective ISS plans. Figure 2. Several weeks of the OOS from Increment 43, which was the first 1-year increment to the ISS beginning in March 2015. Activities and their durations are color coded to indicate the major category in which they belong (e.g., vehicle operations, EVA, scientific research), thus facilitating crew resource analysis and optimization. The operations planning team, international partners, and ISS Program office analyze the distribution and allocation of crew time in the OOS time frame prior to execution, primarily to assess the feasibility of IDRD requirements implementation. Task color coding persists through all phases of flight (pre-increment, in-flight, and post-execution reports are analyzed) so that the teams can measure progress and apply appropriate lessons learned to future planning cycles. The LRP team generates WLPs and STPs using the OOS, ISS Program directives, current vehicle operations status, and unique operations constraints. The OPS PLAN team takes these timelines and generates executable plans, or versions of the STP, that the crew and ground teams will use to perform daily ISS tasks. The OSTP is the new “executable” version of the STP that is used by the crew and ground teams. At this point, activities are detailed enough that specific procedure steps, stowage items, and key notes directing the crew in how to perform the task have already been established. The OPS PLAN team further prepares supplementary materials (i.e., Daily Execute Package) to aide in daily plan