Marker Beacon Lights

T-45C TS INav-04; ADV INav-02

Components and Characteristics of the Instrument Landing System (ILS)

(a) Remove advisory window by pressing REJ push-button

(b) Must execute missed approach

(3) ILS advisory window displayed and all steering needles,

and HSI center CDI courseline removed when no localizer

or glideslope signal is received

(a) Remove advisory window by pressing REJ push-button

(b) Must execute missed approach

Marker Beacon Lights

Sg 5, fr 16-18

(1) Located on the front instrument panel in both cockpits

Fig 7: Marker Beacon Test

and Illumination Controls

(2) Lights flash blue, amber, and white as aircraft passes over

corresponding marker beacon transmitter

(3) VOR transmitter does not have to be selected ON

(4) Lights are considered advisory

(5) WARN/CAUT switch dims the marker beacon lights when

momentarily pressed

(6) Each marker beacon transmitter emits a unique modulated

frequency which is amplified by the marker beacon receiver

and then routed to pilot's headset as an aural tone.

Volume cannot be adjusted

(7) Testing the lights by placing the MASTER TEST SWITCH

to LIGHT TEST or by placing the VOR/ILS control panel

to TEST

Pilots should be aware of the following warnings

associated with the ILS approach system

Sg 5, fr 19

Fig 8: ILS Critical Area

Taxiway Position Markings

CAUTION: Vehicles and aircraft passing in close proximity

to the LOC and GS antennas can cause deviation in the

projection of the localizer and glideslope information.

Should you observe sudden or intermittent changes in

course information displayed on the ADI and HSI once

established on the FAC and not due to heading deviations,

inform ATC immediately and take appropriate action.

CAUTION: Do not taxi beyond the ILS Critical Area Hold

Short markers on the taxiways when the instrument runway

is active for ILS approaches without tower/ground control

clearance. Positioning your aircraft beyond the markers

during an approach could disrupt and affect the reliability of

the ILS guidance beacons.

Page 4-21

(2-02) Original