User Guide Part 2

Pilot’s Guide 2-9
SKY497 Operating Instructions
Monitor the activity of any traffic displayed. Keep in mind the following points when
watching traffic on the display:
• Traffic Prioritizing – The
SKY497 can track up to 30 intruder aircraft simultaneously,
but to reduce clutter, it displays only the 8 most threatening aircraft of those tracked.
• Ground Target Filtering – If your aircraft has a compatible Arinc 429 radio altimeter
connected to the
SKY497 , TA s and other traffic symbols will not be issued for traffic
detected under 380 ft AGL when your aircraft is below 1,700 ft AGL .
•Refer to chapter 3 for a description of the TA criteria and other factors that affect the
display of traffic symbols.
Respond to Traffic Advisories
Do not attempt evasive maneuvers based solely on traffic informa-
tion shown on the SKY497 display. Information on the display is
provided to the flight crew as an aid in visually acquiring traffic; it
is not a replacement for ATC and See & Avoid techniques.
When the SKY497 issues a TA , look outside for the intruder aircraft. When you spot an
intruder aircraft, use normal right-of-way procedures to maintain separation.
Turn Off the SKY497 and the Optional WX-1000
1. Rotate the OFF/BRT knob on the display bezel counterclockwise until the
switch turns off.
Failure Response
All errors indicated by a SKY497 Failed screen (figure 2-5) prevent continued operation of
the SKY497 in SKYWATCH mode; however, error #20, Barometric Altitude Input, is a
recoverable error. For example, if you turn on the SKY497 before you turn on the
barometric altitude source, a SKY497 Failed screen will appear with error #20 and
continued operation of the SKY497 in SKYWATCH mode is not possible; but when you
eventually turn on the barometric altitude source, the SKY497 Failed screen will disappear
and operation will return to normal.
Respond to a SKY497 Failed screen as follows:
1. If the Barometric Altitude Input error (#20) occurs, make sure the baromet-
ric altitude source has been turned on and given enough time to warm up.
Most #20 errors are due to the failure of equipment external to the SKY497 .
2. If any other error occurs, or if error #20 remains after 5 minutes, write
down the error number and description.
3. If you have a
STORMSCOPE WX-1000 , you can still switch into STORMSCOPE
mode using the remote SKYWATCH/STORMSCOPE mode switch.