• Speed Limit Message: SPD LIM info:

  The Amber SPD LIM Flag will appear next to the airspeed display if the maximum and minimum speed references cannot display.

  
  
  SPD LIM Flag Possible Causes:

  Before replacing any component perform BITE if available. Bite the SMYD Computer in the E&E bay, if no faults perform a DEU Bite check (INDEX/Maint/CDS/DEU?/Current Status).

  
  

  1.Stall Management Yaw Damper Coupler (SMYD).

  
  

  2.Display Electronics Unit (DEU).

  
  

  3.Wiring.

  
  
  SPD LIM Flag:

  

  
  Circuit Breakers:

  SMYD-1 Computer DC: P18-2 = E5.

  SMYD-2 Computer DC: P6-1 = E5.

  SMYD-1 Sensor EXC AC: P18-2 = E6.

  SMYD-2 Sensor EXC AC: P6-1 = B4.

  DEU#1 HOLD UP: P6-1 = D10.

  DEU#1 PRIMARY: P18-2 = D5.

  DEU#2 HOLD UP: P6-1 = D9.

  DEU#2 PRIMARY: P6-1 = D11.

  
  
  Applicable deferrals MEL27-13-03 = 1 SMYD with with erroneous PLI, and upper/lower amber bands and associated upper/lower barber poles.
  
  MEL27-13-05 = 2 SMYD with with erroneous PLI, and upper/lower amber bands and associated upper/lower barber poles.

Training Only