Quote:
Originally Posted by mhcasey  Does an airborne check need to be done on a victor airway? The FARs seem to pretty clearly indicate yes, but my chief flight instructor has been telling me to just do them over the airport (not on an airway) because on the ndb (on field) approach chart there is a published radial from the nearest VOR, and since it's published, we can use it. |
to follow regulations, as has already been pointed out, you may use a published afd airborne checkpoint or as from part 91.171:
(4) If no check signal or point is available, while in flight—
(i) Select a VOR radial that lies along the centerline of an established VOR airway;
(ii) Select a prominent ground point along the selected radial preferably more than 20 nautical miles from the VOR ground facility and maneuver the aircraft directly over the point at a reasonably low altitude; and
(iii) Note the VOR bearing indicated by the receiver when over the ground point (the maximum permissible variation between the published radial and the indicated bearing is 6 degrees).
my primary airport has no ground receiver checkpoint, so i use the dual-receiver check almost 100% of the time unless i'm working in a single-vor aircraft. these folks could find themselves 'legally grounded' when requiring an ifr departure clearance past 30-days. i currently have only one instrument student with a single vor unit.
