Document ID: chunk:federal_register_of_legislation:F2025C00187:reg:5:p5
Version: federal_register_of_legislation:F2025C00187
Segment Type: reg
Provision Reference: reg 5 (pt 5/9)
Character Range: 162320–165369

or CPDLC, is the means of communication between ATC and a pilot, using datalink for ATC communications.
datalink operations means aircraft operations using FANS 1/A avionics.
FANS 1/A, which is taken to include FANS 1/A+, is a direct datalink communication between the pilot of an aircraft and ATC via FANS 1/A avionics and FANS 1/A ground end systems, based on EUROCAE ED-100A/RTCA DO-258A, or a later version, as in force from time to time.
performance-based communication, or PBC, means communication based on performance specifications applied to the provision of air traffic services.
performance-based communications and surveillance, or PBCS, means the application of required communication performance (RCP) and required surveillance performance (RSP) specifications to ensure appropriate performance levels for relevant air traffic management operations.
performance-based surveillance, or PBS, means surveillance based on performance specifications applied to the provision of air traffic services.
RCP 240 is the value for the communication expiry time (namely, 240 seconds) after which the initiator of the communication is required to revert to an alternative procedure.
Note   In the context of RCP, the initiator is normally an air traffic controller.
RCP allocation is a portion of an RCP parameter, and is a time value assigned to a specific component of the communication system used for transferring messages between aircraft and ATC.
RCP parameters are performance characteristics that:
(a) provide the basis for developing an RCP specification; and
(b) include RCP transaction time, RCP continuity, RCP availability and RCP integrity.
RCP pilot operational response time, or RCP PORT, is an RCP allocation that specifies the maximum time for a flight crew member to recognise and respond to an ATC instruction.
required communication performance, or RCP specification, means the requirements needed to support PBC, being requirements for the following:
(a) ATC and associated ground equipment;
(b) the communication service provider;
(c) aircraft equipment;
(d) flight crew members.
required surveillance performance (RSP) specification means the requirements needed to support PBS, being requirements for the following:
(a) ATC and associated ground equipment;
(b) the communication service provider;
(c) aircraft equipment.
RSP 180 is the value for the surveillance data delivery time (namely, 180 seconds) at which the surveillance data delivery is considered overdue.
Note   RSP 180 means that 99.9% of surveillance data must be delivered in less than 180 seconds.
RSP allocation is a portion of an RSP parameter and is a time value assigned to a specific component of the communication system used for transferring surveillance reports from aircraft to ATC.
RSP parameters are performance characteristics that:
(a) provide the basis for developing an RSP specification; and
(b) include RSP data delivery time, RSP continuity, RSP availability and RSP integrity.
satellite service provider, or SSP, means an entity, or group