FAA Aircraft Dispatcher Complete Practice Exam

Jet routes are typically established for high-altitude flight operations at altitudes of 18,000 feet and above. These routes are designed primarily for jet aircraft, facilitating efficient long-distance travel in the airspace above lower altitude airways used by general aviation and smaller aircraft. The designation of 18,000 feet as the base altitude for jet routes aligns with the transition from the flight levels used for IFR (Instrument Flight Rules) operations, which begins at 18,000 feet MSL (Mean Sea Level) in the United States.

This altitude range allows jets to operate in more efficient cruising airspace, where they can maintain higher speeds and encounter less turbulence compared to lower altitudes. Flight at these heights is also generally above most weather systems and obstacles, optimizing the safety and efficiency of air travel. Pilot and dispatcher knowledge of jet routes and their altitude specifications is vital for effective flight planning and routing.