As you approach a route waypoint, the GPS 155’s external waypoint annunciator will
flash 15 seconds before the turn anticipation point, and the GPS CDI will be replaced
by a flashing ‘Next dtk xxxº’ prompt (see right).
To use the turn anticipation feature, note the ‘Nxt dtk’ heading when the external
waypoint annunciator begins to flash, and start the turn when the annunciator glows
steadily (approximately 2 seconds before the turn anticipation point). Once you’ve
reached the turn anticipation point, the desired track (dtk) field on the CDI page will
change to display the course value for the next leg. If you have not adjusted your HSI
course selector before the turn, the ‘Next dtk’ will continue to flash until you have
reached the midpoint of the turn. Please refer to your aircraft flight manual supple-
ment for specific turn anticipation instructions.
In addition to the active route page, the GPS 155 features three other pages that
correspond to the route you are currently navigating: the
approach select
,
STAR
select and SID select pages
. These pages display the approach, SID or STAR cur-
rently selected, and list all other available procedures for the departure or arrival air-
ports. Because they are relevant to approach operations, these pages and their func-
tions are described in Section 4.
61
DIRECT-TO & ROUTE NAV
Turn Anticipation
The desired track for the next leg will appear
flashing in the CDI field 15 seconds before the
turn anticipation point.
The waypoint annunciator will glow steadily 2
seconds before the turn anticipation point.
GPS APPR
GPS WPT
155man (GOOD) 7/24/98 1:57 PM Page 61
Summary of Contents for GPS 155TSO
Page 2: ...155man GOOD 7 24 98 2 42 PM Page ii...
Page 20: ......
Page 75: ......
Page 87: ......
Page 130: ...155man GOOD 7 24 98 1 58 PM Page 120...
