RADIO ALTIMETER - CONTROLS AND INDICATORS
1 DH knob on Remote Instrument Controller (RIC)
• Rotated .............................................. set the decision height
2 PUSH TEST push-button
• PRESSED .. execute the built-in test for the radio altimeters.
The display pointer indicates 100 ± 10 ft and a
TEST flag in inverse video (displayed on the
radio altimeter tape) is represented until the
button is released. Also the amber messages
RAD1 and RAD2 are visible during the test
NOTE
The test can be done both on ground and in flight.