NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-45
Page
26
Code
01
REVISION 38
AOM-145/1114
WEATHER RADAR DISPLAY ON THE PFD AND MFD
1 - ANTENNA POSITION INDICATOR (API)
− Color: Amber.
− The API is displayed as an arc at the current range outer limit.
− Indicates the radar antenna alternate sweep position and
provides a picture bus activity indication.
2 - WEATHER RADAR PATCH
− Indicates an area of radar reflection.
− Color:
− Magenta: high intensity reflection.
− Red: medium-high intensity reflection.
− Yellow: medium intensity reflection.
− Green: low intensity reflection.
3 - WEATHER RADAR TURBULENCE INDICATION (P-880 Model
Only)
− Indicates an area of detected turbulence.
− Color: white.
4 - WEATHER RADAR REACT INDICATION
− Indicates an area where radar receiver gain compensation has
reached its maximum value.
− Color: cyan.
5 - WEATHER RADAR RANGE ARC VALUE
− Color: white.
− Indicates half of the radar range selected in the weather radar
control panel.
6 - WEATHER RADAR ANTENNA TILT ANGLE DISPLAY
− Color: green.
− Range: –15 to +15°.
− Resolution: 1°.
7 - WEATHER RADAR TARGET MODE AND ALERT ANNUNCIATION
− Color:
− TGT label: green or amber.
− VAR label: amber.
− The VAR label will be displayed in the same field as that used
for TGT annunciation to indicate a variable gain indication.
Priority is given to TGT annunciation.
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