Location and use of TACAN equipment controls and indicators for tuning/identifying

T-45C TS INav 03; ADV INav-01

Use and Operation of TACAN, VOR, VOR/DME

II. TACAN

Sg 12, fr 15

Fig 7: TACAN Control

A. Location and use of TACAN equipment controls and indicators for

Panel

tuning/identifying 2.7.5.1.1.1

1. FWD/AFT option on HSI display selects and identifies which cockpit

controls the HSI display format, and VOR/ILS and TACAN selection

2. Communication control panel: TACAN toggle switch provides

routing and volume control of Morse code identifier through

intercommunication system (ICS) to pilot’s headset

3. TACAN control panel

a. Power switch controls power to system. Allow 5-second

warmup

b. Option select switch

(1) Position X or Y allows selection of a TACAN channel for

bearing and DME information for that X or Y mode only

(2) Position XA/A permits 2-5 aircraft to receive DME only from

selected airborne aircraft

NOTE: The XA/A is commonly referred to as the air-to-air

mode.

(3) Position Y allows selection of a "Y" TACAN channel for

bearing and DME information

Test button initiates system BIT

(1) Select TACAN steering

(2) Set course to 180 on HSI display

(3) Press and hold TEST button for a minimum of 5 seconds

(4) A passed BIT shows these HSI indications:

(a) TACAN bearing pointer and digital bearing

at 180 +/- 2.5

(b) Range is 0 +/- 1 nm

d. Volume control knob varies audio signal level

e. Channel selector used to select desired channel

Channel display window displays TACAN channel in use

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(2-02) Original