Preferred ifr routes

Preferred IFR routes. Routes established in the major terminal and en route environments to increase system efficiency and capacity.

Preferred IFR routes
Preprogrammed course reversal
Preprogrammed holding pattern (preprogrammed hold) ...

PREFERRED IFR ROUTES- Routes established between busier airports to increase system efficiency and capacity. They normally extend through one or more ARTCC areas and are designed to achieve balanced traffic flows among high density terminals.

See also: NM, Procedure turn, Direct, Report, Air traffic