1/30/20 AIM This update supports changes to 14 CFR Part 91, Appendix G and Advisory Circular 91 − 85, Autho- rization of Aircraft and Operators for Flight in RVSM Airspace. This 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. To 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. This change removes any references to VOR/DME RNAV. This 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. This 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. This change removes the term PRM from the monitor controller references in the paragraph. This change adds additional verbiage and updated figures to clarify the information regarding EFVS operations. This change clarifies what pilots should expect when vectored or deviating off a procedure that includes published speeds. 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. This change incorporates the present day Canadian AIM policy regarding Round − Robin flights into the AIM. NAVCANADA and Transport Canada regula- tions no longer allow Round − Robin flight plans to be filed with a stop in Canadian territory. r. 5 − 4 − 22. Use of Enhanced Flight Vision Systems (EFVS) on Instrument Approaches q. 5 − 4 − 16. Simultaneous Close Parallel PRM Approaches and Simultaneous Offset Instrument Approaches (SOIA) l. 5 − 2 − 9. Instrument Departure Procedures (DP)   Obstacle Departure Procedures (ODP), Standard Instrument Departures (SID), and Diverse Vector Areas (DVA) k. 5 − 2 − 8. Departure Control p. 5 − 4 − 7. Instrument Approach Procedures o. 5 − 4 − 5. Instrument approach Procedure (IAP) Charts j. 5 − 1 − 11. Flights Outside the U.S. Territorial Airspace i. 5 − 1 − 3. Notice to Airman (NOTAM) System n. 5 − 3 − 1. ARTCC Communications m. 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 Vectors h. 4 − 6 − 1. Applicability and RVSM Mandate (Date/Time and Area) 4 − 6 − 3. Aircraft and Operator approval Policy/Procedures, RVSM Monitoring, and Data- bases for Aircraft and Operator Approval 4 − 6 − 4. Flight Planning Into RVSM Airspace 5. Pilot RVSM Operating Practices and Procedures 4 − 6 − 10. Procedures for Accommodation of Non − RVSM Aircraft Explanation of Changes E of Chg − 2 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