When specifying a route other than an established airway or route, do not exceed the limitations in the table on any portion of the route which lies within controlled airspace. (For altitude and distance limitations, see TBL 4-1-1, TBL 4-1-2, and TBL 4-1-3) (For correct application of altitude and distance limitations see FIG 4-1-1 and FIG 4-1-2.)
|T||12,000 and below||25|
|H||14,500 - 17,999||100|
|H||18,000 - FL 450||130|
|H||Above FL 450||100|
|Class||Power (watts)||Distance (miles)|
|H||50 - 1,999||50|
|HH||2000 or more||75|
|Height (feet) above transmitter||Distance (miles from transmitter)|
|4,500||10 (for glideslope)|
|4,500||18 (for localizer)|
|*Use the current flight check height/altitude limitations if different from the above minima.|
Altitude and distance limitations need not be applied when any of the following conditions are met:
EXCEPTION: GNSS equipped aircraft /G, /L, /S, and /V not on a random impromptu route.
Use an altitude consistent with the limitations of the aid when clearing an aircraft to cross or hold at a fix.
Use a route not meeting service volume limitations only if an aircraft requests to operate “VFR-on-top” on this route.
Request aircraft position reports only over fixes shown on charts used for the altitude being flown, except as follows:
NOTE: Waypoints filed in random RNAV routes automatically become compulsory reporting points for the flight unless otherwise advised by ATC.
NOTE: Unpublished fixes should not negate the normal use of published intersections. Frequent routine use of an unpublished fix would justify establishing a fix.
NOTE: TACAN-only aircraft can never be held overhead the NAVAID, be it TACAN or VORTAC.