When flying from Billings on V611 towards ESTRO, what altitude provides obstacle clearance by signal coverage?

The correct altitude of 6,000 feet MSL provides adequate obstacle clearance when flying from Billings on V611 towards ESTRO. This altitude is essential for ensuring that aircraft maintain a safe distance from terrain and obstacles along the route, particularly in areas where elevation variations may present hazards.

Generally, air route altitudes are determined by sectional charts and are planned to provide the necessary vertical separation from obstacles like mountains, towers, and other structures. Specific minimum en route altitudes (MEAs) are established based on the terrain and are designed to offer both obstacle clearance and signal reception reliability from VOR navigation aids.

In this case, flying at 6,000 feet MSL guarantees that you are above the minimum obstacles present along this flight path while also being within the coverage of navigational signals. It’s critical for pilots to be aware of these altitudes to maintain safety and efficient navigation.

Each of the other altitude options may not provide the same level of reliability for obstacle clearance or navigational signal coverage, leading to potential safety issues if selected.