En-route obstacle data is found in which ENR section?

En-route obstacle data is found in which ENR section?

• A. ENR 5.4
• B. ENR 3.2
• C. ENR 2.5
• D. ENR 6.1

Answer: (A)

En-route obstacle data is placed in the ENR part of the Aeronautical Information Publication under the subsection that is devoted to aeronautical obstacles along flight routes. This is the section that collects and presents the heights and locations of obstacles you’d encounter on en-route segments, which is essential for safe route planning and obstacle clearance. Other ENR subsections cover different topics—such as how airways are structured or information about navigation aids—so they aren’t where obstacle data is published. Hence, the correct choice is the ENR area that specifically handles aeronautical obstacles.

En-route obstacle data is placed in the ENR part of the Aeronautical Information Publication under the subsection that is devoted to aeronautical obstacles along flight routes. This is the section that collects and presents the heights and locations of obstacles you’d encounter on en-route segments, which is essential for safe route planning and obstacle clearance. Other ENR subsections cover different topics—such as how airways are structured or information about navigation aids—so they aren’t where obstacle data is published. Hence, the correct choice is the ENR area that specifically handles aeronautical obstacles.