What is the maximum number of entry times for a low-level entry to a route?

• A. No more than one
• B. No more than two entry times for a low-level for each planned entry to a route
• C. Three
• D. Unlimited

Answer: (B)

Think about how entry times are used to control and sequence traffic onto a route. When planning a low-level entry, you want one clear plan with a built-in backup. That’s why you’re allowed to have two entry times: a primary time you aim to enter the route, and a secondary time you can use if the first isn’t feasible due to weather, traffic, or ATC clearance issues. This keeps the plan simple and predictable for air traffic control while still giving you flexibility to accommodate real-world conditions.

Having more than two entry times would clutter the plan and increase the chance of miscommunication or sequencing problems, and having only one would remove a necessary contingency. So two entry times provide the right balance between preparedness and operational safety.