What is Coordinating Altitude (CA)?

What is Coordinating Altitude (CA)?

• A. A weather forecasting method used to manage flight routes.
• B. An airspace coordinating measure that uses altitude to separate users and transition between airspace control elements.
• C. A boundary between airspace sectors defined by time of day.
• D. A procedure for sequencing aircraft during takeoff.

Answer: (B)

Coordinating Altitude is an airspace coordination measure that uses altitude to separate users and to smooth the transition between airspace control elements. It establishes and communicates specific vertical levels that aircraft must maintain as they move from one controller’s domain to another, ensuring ongoing separation during handoffs. This approach keeps traffic safe even as planes cross boundaries, because vertical separation is explicitly defined and respected by both sides of the transition. It’s not about weather forecasting, boundaries defined by time of day, or sequencing aircraft on takeoff. For example, when an aircraft is transferring from one control sector to another, the coordinating altitude ensures both sectors are aligned on the same vertical level, preventing conflicts as control responsibilities switch.

Coordinating Altitude is an airspace coordination measure that uses altitude to separate users and to smooth the transition between airspace control elements. It establishes and communicates specific vertical levels that aircraft must maintain as they move from one controller’s domain to another, ensuring ongoing separation during handoffs. This approach keeps traffic safe even as planes cross boundaries, because vertical separation is explicitly defined and respected by both sides of the transition. It’s not about weather forecasting, boundaries defined by time of day, or sequencing aircraft on takeoff. For example, when an aircraft is transferring from one control sector to another, the coordinating altitude ensures both sectors are aligned on the same vertical level, preventing conflicts as control responsibilities switch.