Appendix G
19. Maximum Number of Unplanned Outages. A value that defines the acceptable number of unplanned outages that exceed the unplanned outage duration limit in a specified time period.
Note: Unplanned outages that are less than the unplanned outage duration limit are considered against the criterion for continuity.
20. Minimum Equipment List (MEL). A list which provides for the operation of aircraft, subject to specified conditions, with particular equipment inoperative, prepared by an operator in conformity with, or more restrictive than, the Master Minimum Equipment List (MMEL) established for the aircraft type.
21. Next Data Authority (NDA). The ground system so designated by the CDA through which an onward transfer of communications and control can take place.
22. Performance-Based Communication and Surveillance (PBCS). PBCS is a concept that applies required communication performance (RCP) and required surveillance performance (RSP) specifications to ensure appropriate performance levels for relevant ATM operations (e.g., application of a reduced separation minimum).
23. Pre-Departure Clearance (PDC). A PDC is a clearance that is issued in a text format rather than being issued audibly over a clearance delivery frequency. This text clearance is issued through the use of a data link communication computer system and is relayed from a dispatch system to the pilot via an ACARS message or a terminal gate printer.
24. Required Communication Performance (RCP). A set of requirements for ATS provision, aircraft capability, and operations needed to support performance-based communication within a defined airspace.
• RCP Availability - Aircraft (AAIR). An RCP allocation that specifies the required probability that the aircraft system is serviceable for the relevant communication capability.
• RCP Availability – CSP (ACSP). An RCP allocation that specifies the required probability that the CSP systems are available to provide the required level of communication service, given the ATSU’s system is available.
25. Required Surveillance Performance (RSP). A statement of the performance requirements for operational surveillance in support of specific ATM functions.
26. Satellite Communication (SATCOM). The Aviation SATCOM is a worldwide mobile communications system providing voice and data communications services between aircraft subnetworks and ground subnetworks.
27. Secondary Surveillance Radar (SSR). A type of radar used by ATSU to transmit and receive data on transponder equipped aircraft. This data includes barometric altitude and identification codes.
28. Supplemental Type Certificate (STC). An STC is a type certificate (TC) issued when an applicant has received FAA approval to modify an aeronautical product from its original design.
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Appendix G
29. Surveillance Transaction Time. The surveillance transaction time specifies the maximum time for the completion of the operational surveillance process. This parameter is an indication of time criticality.
30. Type Certificate (TC). A TC is issued by the FAA when the airworthiness of an aircraft manufacturing design has been determined to be acceptable. Once issued, the design cannot be changed without approval from the FAA.
31. Uplink Message (UM). A CPDLC message sent from a ground system.
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Appendix G G.2 Acronyms.
Acronym Meaning 4-D Four-Dimensional 4DTRAD Four-Dimensional Trajectory Data Link 14 CFR Title 14 of The Code of Federal Regulations AC Advisory Circular ACARS Aircraft Communications Addressing and Reporting System ACL Air Traffic Control Clearance ACM Air Traffic Control Communication Management ACP Actual Communications Performance ACTP Actual Communication Technical Performance AD Airworthiness Directive ADS Automatic Dependent Surveillance ADS-C Automatic Dependent Surveillance-Contract AEG Aircraft Evaluation Group AFM Airplane Flight Manual AFN Air Traffic Service Facilities Notification AIP Aeronautical Information Publication AIS Aeronautical Information Service AMC Air Traffic Control Microphone Check ANSP Air Navigation Service Provider AOC Aeronautical Operational Control ASP Actual Surveillance Performance ATC Air Traffic Control ATIS Automatic Terminal Information Service ATM Air Traffic System Management ATN Aeronautical Telecommunications Network ATN B1 Aeronautical Telecommunications Network Baseline 1 ATS Air Traffic Service ATSU Air Traffic Service Unit G-5
Appendix G Acronym Meaning B2 Baseline 2 CADS Centralized ADS-C System CDA Current Data Authority CDU Control Display Unit CFR Code of Federal Regulations CM Context Management CNS Communication, Navigation, and Surveillance CPDLC Controller-Pilot Data Link Communication CRA Central Reporting Agency CRD Clearance Request and Delivery CRM Crew Resource Management CSP Communication Service Provider CVR Cockpit Voice Recorder CWA Central Weather Advisory D-ATIS Digital Automatic Terminal Information Service D-TAXI Data Link Taxi DCL Departure Clearance DCNS Data Communications Network Service DLIC Data Link Initiation Capability DLMA Data Link Monitoring Agency DM Downlink Message DRNP Dynamic Required Navigation Performance DSC Downstream Clearance DT RSP Data Delivery Time (associated with nominal continuity – 95 percent) EPP Extended Projected Profile ERAM En Route Automation Modernization ET Expiration Time EUROCAE European Organization for Civil Aviation Equipment FAA Federal Aviation Administration FANS Future Air Navigation System G-6
Appendix G Acronym Meaning FBO Fixed-Base Operator FDR Flight Data Recorder FIR Flight Information Region FMS Flight Management System GA General Aviation GOLD Global Operational Data Link (GOLD) Manual (Doc 10037) GPS Global Positioning System HF High Frequency (radio) HFDL High Frequency Data Link HMI Human-Machine Interface ICAO International Civil Aviation Organization IER Information Exchange and Reporting IFO International Field Office IM Interval Management INTEROP Interoperability Requirements Standards ISPACG Informal South Pacific Air Traffic Services Coordinating Group ITP In-Trail Procedures LOA Letter of Authorization MEL Minimum Equipment List METI Meteorological Information MMEL Master Minimum Equipment List M/M/S Make, Model, and Series MOPS Minimum Operational Performance Standard MSpec Management Specification MTBO Mean Time Between Outages MU Management Unit NAT North Atlantic NDA Next Data Authority NM Nautical Mile NSDA National Single Data Authority G-7
Appendix G Acronym Meaning OCD Oceanic Clearance Delivery OCL Oceanic Clearance OEM Original Equipment Manufacturer OPR Operational Problem Report OpSpec Operations Specification OT RSP data overdue time (associated with operational continuity) PANS Procedures for Air Navigation Service Part 91K Part 91 Subpart K PBCS Performance-Based Communication and Surveillance PBN Performance-Based Navigation PDC Pre-Departure Clearance PI Principal Inspector PIREP Pilot Weather Report POI Principal Operations Inspector PORT Pilot Operational Response Time PR Position Reporting RA Radar Associate RCP Required Communication Performance RCP AAIR RCP Availability – Aircraft RCP ACSP RCP Availability – CSP RCP C RCP Continuity RCP I RCP Integrity RCTP Required Communication Technical Performance RF Radio Frequency RLatSM Reduced Lateral Separation Minima RMA Regional Monitoring Agency RNAV Area Navigation RNP Required Navigation Performance RSMP Required Surveillance Monitored Performance RSP Required Surveillance Performance G-8
Appendix G Acronym Meaning RSP AAIR RSP Availability – Aircraft RSP ACSP RSP Availability – CSP RSP C RSP Continuity RSP I RSP Integrity RSTP Required Surveillance Technical Performance RTF Radio Telephone SATCOM Satellite Communication SBB SwiftBroadband SBD Short Burst Data SDP Service Delivery Point SELCAL Selective-Calling System SID Standard Instrument Departure SIGMET Significant Meteorological Information SITA Société International de Télécommunications Aeronautiques SOC Statement of Compliance SPR Safety and Performance Requirements SSR Secondary Surveillance Radar STC Supplemental Type Certificate TC Type Certificate TDLS Tower Data Link Services TSO Technical Standard Order TWIP Terminal Weather Information for Pilots UM Uplink Message VDL Very High Frequency Data Link VHF Very High Frequency (radio) G-9
Advisory Circular Feedback Form If you find an error in this AC, have recommendations for improving it, or have suggestions for new items/subjects to be added, you may let us know by contacting the Flight Technologies Division (AFS-400) at 9-AWA-AFS400-Coord@faa.gov or the Flight Standards Directives Management Officer at 9-AWA-AFS-140-Directives@faa.gov.
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