substitute route

substitute route

A route assigned to pilots when any part of an airway or route is unusable because of its NAVAID (navigational aid) status.
References in periodicals archive ?
To keep away from a narrow two way road inside port, the team used an substitute route away from the main traffic.
Then she called a Register- Guard circulation manager she had done some substitute route delivery for in January (she's only had her present route since April 15) and was eventually connected with someone who took her more newspapers so that she and Hall, who came to join her, could finish the route before the R-G's 6:30 a.
These kinds of services are mainly functional for mobile platforms such as marine, regions with limited or no terrestrial links like deep desert, or as a substitute route like business continuity to conventional telecommunication facilities.