From A320 Series FCOM 3 Supp Techniques, Nav, Radar
[QUOTE]
Before selecting WX, WX/T or MAP mode on the control unit, make certain that :
No one is within a distance less than 5 meters from the antenna in movement, within an arc of plus or minus 135° on either side of the aircraft centerline.
The aircraft is not directed towards any large metallic obstacle, such as a hangar, which is within 5 meters in an arc of plus or minus 90° on either side of the aircraft centerline.
/QUOTE]
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