Alternate Airport : An airport, specified in the flight plan, to which a flight may proceed when a landing at the point of first intended landing becomes inadvisable
Ilan Kelman (ed.), Vulnerability and Resilience Definitions and References, Version 2, 2007. http://www.islandvulnerability.org/docs/vulnres.pd f, (Vulnr and Resilience - Brit) {524}