“Other airspace areas” is a general term referring to the majority of the remaining airspace. It includes:
• Airport Advisory Areas
• Military Training Routes (MTR)
• Temporary Flight Restrictions
• Parachute Jump Areas
• Published VFR Routes
Airport Advisory Areas
An airport advisory area is an area within 10 SM of an airport where a control tower is not operating, but where a flight service station (FSS) is located. At these locations, the FSS provides advisory service to arriving and departing aircraft.
Military Training Routes
Military training routes (MTR) are developed to allow the military to conduct low-altitude, high-speed training. The routes above 1,500 feet AGL are developed to be flown primarily under IFR, and the routes 1,500 feet and less are for VFR flight. The routes are identified on sectional charts by the designation “instrument (IR) or visual (VR).”
Temporary Flight Restrictions
Temporary flight restrictions are established, when required, to protect persons and property in the air or on the surface. The intent of these restrictions is to provide a safe environment for relief or rescue aircraft, eliminate congestion which might occur in airspace over special events, protect airspace in the vicinity of presidential flights, etc. Many times the FSS coordinates temporary flight restrictions, and when necessary, a Notice to Airmen is issued.
Parachute Jump Areas
Parachute jump areas are published in the Airport/Facility Directory. Sites that are used frequently are depicted on sectional charts.
Published VFR Routes
Published VFR routes are for transitioning around, under, or through some complex airspace. Terms such as VFR flyway, VFR corridor, Class B airspace, VFR transition route, and terminal area VFR route have been applied to such routes. These routes are generally found on VFR terminal area planning charts.