A publication of the National Air Traffic Controllers Association
Issue link: http://natca.uberflip.com/i/862302
Information Boxes remain on a number of Charts UNDERLINE & OVERLINE – ALTITUDES & SPEEDS Underlines & Overlines for Altitude & Speed have been widely accepted and well received. Only a few queries were received. Compositional adjustments are being made to Spacing of text when necessary to show Altitud e or Speed within an Information Box outline. MINIMUM SAFE ALTITUDE ("Borrowed" MSA) On some RNAV procedures, for "borrowed MSAs, the origin or CenterPoint Waypoint may be Confused with other Waypoints used in the Flight Procedure. This is especially tru e if the location of the MSA WP happens to be on or near the charted flight tracks. In these circumstances, the MSA origin or CenterPoint (waypoint) will not be charted. Borrowing MSAs can introduce unintended complication, as described. Jeppesen has su bmitted a recommendation to the FAA Aeronautical Charting Forum for the FAA to consider the addition of MSA information as part of the procedure design consideration and inclusion on official FAA SID or STAR procedure source. TERRAIN & OBSTACLE CLEARANCE INFORMATION The new depiction features Terrain and Obstacle Clearance information depicted in three forms: • Colored Terrain Contours • Grid MORAs • Minimum Sector Altitudes Feedback from some customers indicates that the combination of 3 different types of Ter rain and Obstacle Clearance information is "a bit excessive" or "too much of a good thing". The decision to include all three types accommodated a range of customer input across the globe. Some operators favor one method over the others. The feedback is understood. No changes are anticipated. SIDs & STARs COVERING HUGE GEOGRAPHIC AREAS Many U.S. Procedures Cover Hundreds of Miles Beginning - to - End (I.e. 200 - 300 NM from En route Terminus Fix to Runway) • Areas of Complexity may v ary or e xist at Beginning, Common Segment, or End (Numerous or Complex En route, or Runway Transitions, or Complex Constraints) • Scale of c hart based on m aximum e xtent of c overage vs. a rea(s) of c omplexity • Some s cales are c omparable to s cales t ypically used on En route c harts ( i .e. 1 inch=30 nm)