Skywatch SKY497, Руководство пилота

Страница: 40 / 52

Chapter 4 – Principles of Operation
SKY497 Pilot’s Guide 4-4
Audio Inhibit
Figure 4-3.TA Zones If Your Aircraft Has No Radio Altimeter
and a Fixed Landing Gear
The
SKY497
uses sensitivity level
B
in the following situations
(corresponds to numbers
3, 4, 7, 8, 9,
and
10
in table
4-1
):
1. Your aircraft has a radio altimeter and is above
2,000
ft
AGL
.
2. Your aircraft has no radio altimeter but its retractable
landing gear is up.
3. Your aircraft has no radio altimeter and a fixed landing
gear.
Audio Inhibit, SKY497
This audio inhibit feature prevents the aural part of
TA
s,
“traffic, traffic,” from being announced during takeoff and
landing in order to minimize pilot distraction. The correspond-
ing
TA
symbols are still displayed.
The
SKY497
uses this audio inhibit feature in the following
situations:
1. Your aircraft has a radio altimeter and you’re below
400
ft
AGL
. (See figure
4-1
.)
2. Your aircraft has no radio altimeter but its retractable
landing gear is down. (See figure
4-2
.) (Audio is not
inhibited if you have fixed landing gear and no radio
altimeter.)
0.55 nmi
+800 ft
–800 ft
This area or 30 seconds*
*20 seconds for non-altitude reporting intruder aircraft
Not to scale
Intruder aircraft
GL
TA zone
(sensitivity level B)