STALL WARNING SYSTEM

Question 1

STALL WARNING TEST SWITCHES

Answer 1

• PUSH:
  
  • on ground with AC power:
    
    • each switch tests its respective SMYD computer (No 1 SMYD = Capt control column shaker & No 2 SMYD = FO control column shaker)
    • vibrations can be felt on both
    • TEST IS INHIBITED IN FLIGHT
• Inputs:
  
  • ADC
  • AOA
  • flap/slat
  • thrust
  • air/gnd logic
• if test fails - could be caused by LEDs drooping - retract LEDs via Hyd B then retest
• this test requires ALL TRANSFER BUSSES (AC) to be powered for at least 4 minutes prior to test