Which term denotes the 12-hour block of time a reserve line holder must be available to work?

• A. Round Trip
• B. Ready Reserve
• C. Reserve Line
• D. Reserve Status

Answer: (D)

Reserve status defines the on-standby state for a reserve line holder who must be available to work within a 12-hour window. This block of time is the reserve period, during which the crew member is not assigned a specific trip but may be called to report for duty. The idea is being ready to work on short notice throughout that 12-hour span. Other terms describe different concepts—round trip refers to a type of flight, ready reserve is a specific readiness level within reserve duties, and a reserve line is the scheduled line for reserve work—but they do not name the 12-hour availability window itself. So, reserve status is the label used for that defined 12-hour block.