Sam Spade wrote:
Jim Macklin wrote:

A NAVAID is shown on a chart if it has a function on that chart.
Enroute charts don't show NAVAIDS that only serve an IAP, and IAP
charts don't show all the enroute NAVAIDS in an area.
The NDB in question has some enroute function, perhaps a bearing or
even a route segment.


Could you be more specific about the case in point? What en route
function does PETIS have?

PETIS NDB doesn't seem to have an enroute function, but PETIS reporting point
does. The two are very nearly, but not exactly colocated. Note that PETIS
reporting point is not defined from the NDB, but rather by 4 different methods
using two VORs and 2 localizers.

Navaid identifier: SB
type: NDB
name: PETIS
city: SAN BERNADINO
state: CA
latitude: 34-03-23.285N
longitude: 117-21-58.014W
elevation: 0
magnetic variation: -14

Fix identifier: PETIS
state: CA
use: REPORTING POINT
latitude: 34-03-23.290N
longitude: 117-21-58.010W
VOR HDF, radial 317.77
VORTAC PDZ, radial 029.62, DME 11.63
ILS/DME I-ONT, radial E CRS, DME 12.86
ILS I-SBD, radial SW CRS