Sage-Tips

What is the difference between low and high altitude airways?

High Altitude Airways are generally for use above 18,000 (class A airspace) while Low Altitude Airways are used below 18,000. Since they are primarily for IFR use, the charts don’t provide much terrain detail unlike sectionals. Their primary purpose is to show the airway info.

What is a low altitude enroute chart?

IFR Enroute Low Altitude Charts provide aeronautical information for navigation under instrument flight rules below 18,000 feet MSL . These four-color chart series includes: Air Traffic Services. Airports that have an Instrument Approach Procedure or a minimum 3000′ hard surface runway. Radio aids to navigation.

What is the difference between MOCA and MEA?

Both the MEA and MOCA provide the same obstruction clearance. The only differ- ence is that radio navigation signal coverage is provided along the entire airway segment at the MEA, but the MOCA provides radio navigation signal coverage only within 22 nautical miles of the VOR.

What are high altitude charts?

IFR Enroute High Altitude Charts (Conterminous U.S. and Alaska) are designed for navigation at or above 18,000 feel MSL. This four color chart series includes: Jet route structure; VHF radio aid to navigation (frequency, ID, channel, geographic coordinates); selected airports; reporting points.

What is low altitude airways?

Low altitude airways (below 18,000 feet (5,500 m) MSL) that are based on VOR stations, appear on sectional charts, world aeronautical charts, and en route low altitude charts and are designated with the prefix “V” (pronounced victor, hence, victor airways).

What is the difference between MORA and MOCA?

MOCA will give you 1000 ft separation from terrain when terrain is less than 5001 ft and 2000 ft separation when terrain is more than 5000 ft. MORA will give you separation from terrain up to 10 nm off the route center line and 10 nm radius around the ends of the route.

Is the MOCA higher than the MEA?

You are right. Within 22 nautical miles of the VOR, there is no practical difference between an MEA and a MOCA.

What three things are guaranteed by a minimum enroute altitude MEA )?

Put simply, the MEA is the lowest altitude to be flown in an airspace structure which assures:

• reception of navigation aids necessary to navigate accurately along the required route,
• two-way communication with air traffic control,
• safe clearance from obstacles within the sector, and.

What are IFR enroute low altitude charts?

IFR Enroute Low Altitude Charts provide aeronautical information for navigation under instrument flight rules below 18,000 feet MSL. These four-color chart series includes: Air Traffic Services. Airports that have an Instrument Approach Procedure or a minimum 3000′ hard surface runway. Airways/Route Data. Cruising Altitudes.

What does IFR stand for in aviation?

IFR Enroute High Altitude Charts (Conterminous U.S. and Alaska) are designed for navigation at or above 18,000 ft MSL. Instrument Flight Rules ( IFR) Enroute High Altitude Chart for the Conterminous U.S.

What is en route high-altitude navigation information?

En route high-altitude charts provide aeronautical information for en route instrument navigation at or above 18,000′ MSL Information includes the portrayal of Jet and RNAV routes, identification and frequencies of radio aids, selected airports, distances, time zones, special use airspace, and related information

How are distances on the en route chart displayed?

The en route chart depicts point-to-point distances on the airway system Distances from VOR to VOR are charted with a number inside of a box To differentiate distances when two airways coincide, the word “TO” with the three-letter VOR identifier appear to the left of the distance boxes