Explanation of Changes
Effective: January 30, 2020
1-1-9. Instrument Landing System (ILS)
Simplified Directional Facility (SDF)The majority of Middle Markers (MM) have been decommissioned and are not operationally required. Outer Markers (OM), or a suitable substitute, are required to identify the final approach fix for non-precision approaches. This change identifies suitable substitution methods for an OM. In addition, this change notes the service volume of a localizer can be utilized beyond 18 NM with the approval of the Flight Inspection branch. FIG 1-1-7 has been amended to add comments that refer to the MM.
1-1-12. NAVAIDS with Voice
4-2-14. Communications for VFR Flights
7-1-10. Inflight Weather Broadcasts
Appendix 3. Abbreviations/AcronymsThis change deletes Hazardous Inflight Weather Advisory Service (HIWAS), as this continuous broadcast service is no longer provided by Flight Service. However, Flight Service is still responsible to advise pilots of hazardous weather that will impact operation.
2-1-6. Runway Status Light (RWSL) System
3-1-2. General Dimensions of Airspace Segments
3-2-2. Class A. Airspace
3-2-3. Class B Airspace
3-2-4. Class C Airspace
3-2-6. Class E Airspace
4-1-15. Radar Traffic Information Service
4-5-5. Airport Surface Detection Equipment (ASDE-X) Airport Surface Surveillance Capability (ASSC)
4-5-7. Automatic Dependent Surveillance- Broadcast (ADS-B) Services
5-1-4. Flight Plan - VFR Flights
5-1-8. Flight Plan (FAA Form 7233-1) - Domestic IFR Flights
5-2-7. Departure Restrictions, Clearance Void Times, Hold for Release, and Release Times
5-2-8. Departure Control
5-6-6. Civil Aircraft Operations Within U.S. Territorial Airspace
5-6-7. Civil Aircraft Operations Transitting U.S. Territorial Airspace
5-6-8. Foreign State Aircraft Operations
10-2-1. Offshore Helicopter OperationsThis change updates references and procedures to include ADS-B, providing guidance for ADS-B operations in the National Airspace System.
- 3-2-3. Class B AirspaceThis change reflects the statutory authority of 14 CFR 61.325 allowing light-sport aircraft to operate within Class B airspace by sport pilot certificate holders.
- 4-1-20. Transponder OperationThis change clarifies that most existing operating procedures and phraseology for aircraft transponders also apply to ADS-B Out. This change also removes several obsolete terms, references, phraseology examples, and other minor editorial changes.
- 4-4-12. Speed AdjustmentsThis change clarifies what pilots should expect when vectored off or deviating off a procedure that includes published speeds, and corrects a typographical error. It also includes guidance on what pilots should expect when reaching the end of a STAR. The change clarifies the range of speeds that pilots are expected to maintain for published or verbally-assigned speeds.
- 4-5-6. Traffic Information Service (TIS)This change corrects grammar and uses examples that more accurately reflect the intent.
4-6-1. Applicability and RVSM Mandate (Date/Time and Area)
4-6-3. Aircraft and Operator approval Policy/Procedures, RVSM Monitoring, and Databases for Aircraft and Operator Approval
4-6-4. Flight Planning Into RVSM Airspace
4-6-5. Pilot RVSM Operating Practices and Procedures
4-6-10. Procedures for Accommodation of Non-RVSM AircraftThis update supports changes to 14 CFR Part 91, Appendix G and Advisory Circular 91-85, Authorization of Aircraft and Operators for Flight in RVSM Airspace.
- 5-1-3. Notice to Airman (NOTAM) SystemThis change provides NAS users of updates to the U.S. NOTAM System and governance, reflecting a more accurate view of NOTAM information. It also removes references to sections that are no longer published in the Notices to Airmen Publication.
- 5-1-11. Flights Outside the U.S. Territorial AirspaceThis change incorporates the present day Canadian AIM policy regarding Round-Robin flights into the AIM. NAVCANADA and Transport Canada regulations no longer allow Round-Robin flight plans to be filed with a stop in Canadian territory.
- 5-2-8. Departure ControlThis change clarifies what pilots should expect prior to takeoff when a departure procedure was included in the departure clearance, but an initial heading to fly is assigned.
- 5-2-9. Instrument Departure Procedures (DP) - Obstacle Departure Procedures (ODP), Standard Instrument Departures (SID), and Diverse Vector Areas (DVA)This change gives pilots, operators, performance engineers, etc., further information on the value, accuracy, and limitations of the low, close-in obstacles published in the Terminal Procedures Publication (TPP). Some operators/performance engineers interpreted the existing verbiage to mean that the information in the TPP was the only source of obstacle data deemed appropriate for departure performance planning. The intent of this additional note is to direct attention to sources other than the TPP, without being specific (at least in the AIM/AIP) as to what those other sources might be.
5-2-9. Instrument Departure Procedures (DP) - Obstacle Departure Procedures (ODP), Standard Instrument Departures (SID), and Diverse Vector Areas (DVA)
5-4-1. Standard Terminal Arrival (STAR) Procedures
5-5-6. Radar VectorsThis change clarifies what pilots should expect when vectored or deviating off a procedure that includes published speeds.
- 5-3-1. ARTCC CommunicationsTo keep pace with technological advances, the Controller Pilot Data Link Communications (CPDLC) message sets will continually evolve. As needed, new messages will be added and existing messages will be rewritten or removed. This change adds one new message, removes two messages, and modifies two messages of the CPDLC message set.
- 5-4-5. Instrument approach Procedure (IAP) ChartsThis change removes any references to VOR/DME RNAV.
- 5-4-7. Instrument Approach ProceduresThis change provides pilots with additional options when it is necessary to conduct an instrument approach at an airspeed higher than the maximum airspeed of its certificated aircraft approach category. It explains the flexibility provided in 14 CFR and emphasizes the primary safety issue of staying within protected areas.
- 5-4-16. Simultaneous Close Parallel PRM Approaches and Simultaneous Offset Instrument Approaches (SOIA)This change removes the term PRM from the monitor controller references in the paragraph.
- 5-4-22. Use of Enhanced Flight Vision Systems (EFVS) on Instrument ApproachesThis change adds additional verbiage and updated figures to clarify the information regarding EFVS operations.
5-4-23. Visual Approach
5-4-24. Charted Visual Flight Procedure (CVFP)This change encourages pilots to use other available navigational aids to assist in positive lateral and vertical alignment with the runway.
- 7-1-11. Flight Information Services (FIS)This change announces that, with the exception of TFRs, NOTAMs older than 30 days will not be provided via FIS-B.
- 7-1-21. PIREPs Related to Airframe IcingThis change harmonizes Icing definitions with Advisory Circular 91-74B, as recommended by NTSB Recommendation A-10-034.
- 7-1-24. Wind Shear PIREPsThis change adds content on Wind Shear Escape Pilot Reports. This change advises the pilot to inform ATC when they are conducting a wind shear escape, only after aircraft safety and control is assured. Additionally, this change informs the pilot that once a wind shear escape maneuver is initiated, ATC is not responsible for providing approved separation until the pilot advises that the escape maneuver is complete, and approved separation has been re-established.
- Entire publication.
Editorial/format changes were made where necessary. Revision bars were not used when changes are insignificant in nature.