AVIONICS FLIGHT CHECKS (CONT)
Course indicator switches (instrument panel) - VOR.
Glideslope indicator (course deviation indicators) -
Read glideslope indications.
Fly an ILS approach monitoring localizer and
Fly the approach monitoring localizer and glideslope
indicators, and marker beacon indicator lights and
audio tone for proper function.
In horizontal flight over the ground station cone of
silence marker, at 10,000 feet above ground level, a
position marker beacon indication should be received
for a distance of not less than one mile.
In horizontal flight over the ground station at any
altitude, the duration in miles of marker indication
when approaching a point directly over the ground
station, shall not be more than 50 percent greater than
the duration in miles of marker beacon indication when
leaving the point directly over the ground station,
VOR receiver - Check as follows