Document ID: chunk:federal_register_of_legislation:F2022C00813:reg:300:p11
Version: federal_register_of_legislation:F2022C00813
Segment Type: reg
Provision Reference: reg 300 (pt 11/27)
Character Range: 99116–101990

the above must be rounded up to the next highest 100 ft increment.

8.2.5                   Navigation Tolerance Area Construction—Examples
Figure 8‑4: Overlapping nav-aid coverage on route segment with each coverage half length of segment or more or coverage of destination nav-aid half length of segment or more
Figure 8‑5: Coverage of destination nav-aid less than half-length of segment
Figure 8‑6: No nav-aid at departure aerodrome, nav-aid at destination with coverage such that 10.3° lines intersect 15° lines from departure aerodrome
Figure 8‑7: No nav-aid at departure aerodrome, nav-aid at destination with coverage such that 10.3° lines do not intersect 15° lines from departure aerodrome
Figure 8‑8: Nav-aid at departure aerodrome, no nav-aid at destination—segment distance not exceeding 275 NM (10.3° diverges 50 NM in 275 NM)
Figure 8‑9: Nav-aid at departure aerodrome, no nav-aid at Destination—segment distance exceeding 275 NM
Figure 8‑10: Route segment without nav-aids — segment distance not exceeding 186 NM (15° diverges 50 NM from track in 186 NM)
Figure 8‑11: Route segment without nav-aids—segment distance exceeding 186 NM
Figure 8‑12: As for Figure 8‑5, but 10.3° lines expand to maximum distance of 50 NM either side of track—in no case is the maximum width of basic area inside 5 NM buffer are greater than 50 NM either side of track
Figure 8‑13: Route segment with intermediate reporting point (no positive fix) basic area for A-B is ADEF and for B-C is GDCF
Figure 8‑14: Route segment with change of direction at D.R position — coverage of destination nav-aid not less than length of second sector of route segment
Figure 8‑15: Route segment with change of direction at D.R position—coverage of destination nav-aid less than length of second sector of route segment
Figure 8‑16: Route segment with change of direction at DME/azimuth aid fix—coverage of destination nav-aid not less than length of second sector of route segment (NB: diagram shows DME at A; DME fix area would be different if DME at another position)
Figure 8‑17: Route segment with change of direction at DME/azimuth aid fix—coverage of destination nav-aid less than length of second sector of route segment (NB: diagram shows DME at A. DME fix area would be different if DME at another position)

Section 8.3:   DME/GPS Arrivals

8.3.1                   Introduction to DME/GPS Arrival Procedures

8.3.1.1              A DME/GPS arrival procedure is designed to permit an aircraft to descend from an en-route altitude at or above the lowest safe altitude to a minimum altitude at an aerodrome using DME or GPS distance measurement and ground based azimuth guidance facilities. The procedure is prescribed for particular tracks or sectors and takes the form of a series of descending steps at appropriate distances.

8.3.1.2              The procedure normally uses a DME that