- Conventional STARs/SIDs. The portion of a SID/STAR that connects to one or more en route airway/jet route.
- RNAV STARs/SIDs. The portion of a STAR preceding the common route or point, or for a SID the portion following, that is coded for a specific en route fix, airway or jet route.
En Route Transition
Source: Pilot Contoller Glossary (PCG)