HUD Navigation Display (cont)

Use and Operation of TACAN, VOR, VOR/DME

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

C. Distance shown in tenths of a mile from 0.0 to 99.9 nm and one mile

increments for distance greater than 99.9 nm

D. Time to go based on the current ground speed

E. Course steering arrow and deviation scale displayed when VOR,

TACAN, waypoint, or waypoint offset steering is selected and course

(CRS selected on the HSI)

1. Course steering arrow indicates the difference between the aircraft

ground track and the course setting

2. Deviation scale commensurate with the HSI CDI display

a. Each dot in the deviation scale represents 5 degrees of course

deviation with VOR or TACAN steering selected

b. Each dot in deviation scale represents 2 nm gear up or 0.15 nm

gear down cross track deviation with waypoint or waypoint

offset steering selected

Deviation scale removed when deviation from selected course

(1) Within 1 degree with TACAN steering selected

(2) Within 0.4 nm gear up, 0.03 nm with gear down with

waypoint or waypoint offset steering selected

F. ILS needles displayed when ILS signal is received and ILS steering

selected

1. Needles referenced to velocity vector and the scaling is the same

as the scaling on the ADI display

2. Needles flash when glideslope and/or localizer needle display limits

are reached

G. The command steering marker

1. Only displayed when the course steering arrow is not displayed

2. The command steering marker located based on the selected

steering reference

a. ILS or no steering selected -- heading value entered on the HSI

b. VOR steering selected -- VOR bearing

TACAN, Waypoint, Waypoint Offset steering selected -- great

circle steering to selected navigation point

Original (2-02)

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