Phraseology and Flight Plans

1
Phraseology and Flight Plans

• Introduction
• 1 - The role of phraseology in ATS
• 2 - The role of flight plans in ATS

2
- The role of phraseology in ATS -

• ICAO Annex 10 - Aeronautical Telecommunications,
  Volume II, prescribes in Chapter 5, Aeronautical
  Mobile Service, 5.1.1.1
• In all situations for which standard
  radiotelephony (RTF) phraseology is specified it
  shall be used.
• RTF Phraseologies are contained in Part X of
  ICAO Doc 4444, PANS-RAC.
• The Controller-Pilot Data Link Communications
  (CPDLC) Message Set is contained in PANS-RAC,
  Appendix 5.

3
- Changes to phraseology -

• As use of RNAV in Terminal Airspace becomes more
  prevalent, additional standard RTF phraseology
  may need to be developed, based on identified
  requirements and best practice. Such additional
  phraseology will first be inserted into ICAO Doc
  7030/4, EUR Regional Supplementary Procedures.
• In addition, the CPDLC Message Set would need to
  be examined as to whether additional messages are
  required.

4
- Process for Changes to RTF -

• Once the requirements for changes/additions have
  been identified, the EUROCONTROL/ EATMP Airspace
  Management and Navigation Team (ANT) would task
  its Sub-Group APDSG (ATM Procedures Development)
  to develop such RTF Phraseologies.
• Upon their approval by the ANT, they would be
  processed to the European Air Navigation Planning
  Group (EANPG) for approval and inclusion in Doc
  7030/4 EUR SUPPS.

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- Process for Changes to RTF - ctd

• Through the Multi-Agency ATS Procedures
  Co-ordination Group (MAPCOG) of EUROCONTROL, FAA
  and NAV CANADA, these changes/additions to
  RTF/CPDLC could be processed to ICAO Montreal for
  inclusion in PANS-RAC.
• Co-ordination through MAPCOG would, in any case,
  be beneficial to ensure consistency of RTF
  application in EUR, NAT and NAM Regions.

6
- The role of flight plans in ATS -

• ICAO defines
• Flight Plan. (FPL)
• Specified information provided to air traffic
  services units, relative to an intended flight or
  portion of a flight of an aircraft.
• Thus, flight planning is the process by which the
  pilot-in-command/operator is to inform ATS of
  planned operations.
• The introduction of new concepts and
  technologies, with NAV/COM (airspace)
  requirements requires a precise flight planning
  methodology.

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- Flight plans regarding RNAV -

• Of interest to the subject of the present
  Workshop are FPL
• Item 10 EQUIPMENT, i.e. Radio Communication,
  Navigation and Approach Aid Equipment
• Item 18 OTHER INFORMATION and
• Item 15 ROUTE.

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- Flight plans regarding RNAV - ctd

• Item 10 EQUIPMENT, i.e. Radio Communication,
  Navigation and Approach Aid Equipment allows the
  following RNAV-related letters
• G (GNSS)
• R RNP type certification Note Inclusion of
  letter R indicates that an aircraft meets the
  RNP type prescribed for the route segment(s),
  route(s) and/or area concerned.
• Z Other equipment carried Note If the letter Z
  is used, specify in Item 18 the other equipment
  carried, preceded by COM/ and/or NAV/ , as
  appropriate.

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- Flight plans regarding RNAV - ctd

• Item 15 ROUTE (2 to 7 characters) -
• Insert the designator of the ... ATS route.
  where appropriate, the coded designator assigned
  to the standard departure or arrival route (e.g.
  BCN1, KODAP2A).
• Item 18 OTHER INFORMATION
• NAV/ Significant data related to navigation
  equipment as required by the appropriate
  authority.

10
- Flight plan issues regarding RNAV -

• As shown in the previous slides, the present ICAO
  flight plan form does not easily allow for
  insertion of detailed information on aircraft
  equipment and capabilities for RNAV application.
• Some national ATS authorities require the
  insertion of not allocated letter(s) in Item
  10 to indicate FMS capabilities.
• Around 40 different versions of FMS equipment
  exist, depending on manufacturer and/or operator
  specifications. Source RD Committee, Technical
  Information Meeting on Flight Intent

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- Flight plan issues regarding RNAV - ctd

• It is expected that controllers will only need to
  know the aircraft navigation capability, not the
  precise equipment list.
• E.g. B-RNAV, P-RNAV or RNP 0.3 RNAV.
• Therefore there appears to be an urgent
  requirement to allow insertion of appropriate
  information on aircraft navigation capabilities
  in the ICAO flight plan.
• This would, however, require that the type of
  information for insertion be properly and
  adequately determined.
• Such requirement is not only true for
  RNAV-related applications, but also for other
  types of NAV and COM equipment/capabilities.

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- Process for Changes to Flight Plans -

• Since the ICAO flight plan form is in world-wide
  use, it would be difficult to institute the
  required changes on a national or regional level.
• Flight planning methodology is a work item of
  APDSG, in co-ordination with MAPCOG.
• A revised flight planning methodology will be
  proposed to ICAO upon completion of this process.

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- Process for Changes to Flight Plans - ctd

• In order to properly determine which RNAV-related
  equipment and/or capabilities should be included
  in the revised methodology, input from all
  interested parties (ECAC members, operators,
  flight crew, ATS personnel, MAPCOG members) will
  be required.
• Such input should be processed through the
  respective APDSG member.

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- Conclusions -

• Changes required to RTF phraseology, initially on
  a regional basis, can be achieved relatively
  quickly based on identified requirements.
• Requirements for changes to CPDLC will need to be
  determined.
• Changes to the ICAO methodology for flight
  planning require world-wide applicability and
  should be achieved through the established
  APDSG/ANT and MAPCOG process.

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- Phraseology - Flight Plans