Type 3 (of aircraft) : Type is a specific classification of aircraft having the same basic design, including all modifications which result in a change in handling or flight characteristics
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}