1.1. Temporary Reserved Area (TRA) means an airspace of defined dimensions within which activities require the reservation of airspace for the use of specific users during a determined period of time, and through which other airspace users may be allowed to transit under ATC clearance.
 

1.2. The purpose of TRA areas is to permit activities requiring temporary reservation of airspace to be planned in advance so that the Airspace Management Cell (AMC) can provide information on the availability of Conditional Routes established through these areas already on the days preceding the operations.

Note 1: As described in section ENR 3, the availability of CDR routes is published daily by NMOC by means of the EAUP/EUUP message to operators for flight planning purposes.

Note 2: Information concerning TRA areas are given below, see also the Index charts, ENR 6.4.

Note 3: Local TRA areas, see GEN 3.2, para 4.
 

2.1. Flight Plan Buffer Zones (FBZ) are established around AMC Manageable TRA areas for flight planning purposes.