Good luck!
- 1) This green line represents…
This is the time zone boundary that separates eastern and central time.
This is the time zone boundary that separates eastern and central time.
2) Why is the “3000G” colored blue?
This designates the MEA if you were to be navigating by the use a certified IFR GPS.
This designates the MEA if you were to be navigating by the use a certified IFR GPS.
3) This symbol denotes a…
This is a changeover point and this is where you would switch from one navaid to the next.
This is a changeover point and this is where you would switch from one navaid to the next.
4) Why is this airport colored brown?
When airports are colored brown on enroute charts, it means there are no published instrument approach procedures for any runway at the airport.
When airports are colored brown on enroute charts, it means there are no published instrument approach procedures for any runway at the airport.
5) What does the “X” on top of the VOR/DME represent?
This indicates that there is a minimum crossing altitude when crossing the VOR/DME. In this example, there’s a minimum crossing altitude of 11,500′ MSL when you’re crossing the CHE VOR Eastbound on Victor 101 (MCA V101 11500E).
This indicates that there is a minimum crossing altitude when crossing the VOR/DME. In this example, there’s a minimum crossing altitude of 11,500′ MSL when you’re crossing the CHE VOR Eastbound on Victor 101 (MCA V101 11500E).
Earn your instrument rating and master IFR with Boldmethod’s new Instrument Procedures course.
Whether you’re starting your instrument training or brushing up for your next flight, this course gives you the knowledge, confidence, and flexibility to be a great instrument pilot.

