• Flight Director Bias Out Of View With PSEU light illuminated: Notes:

  Check for a Valid onside Radio Altimeter. A invalid RA will cause the onside flight director to bias out of view with a PSEU light on the ground.

  
  
  Flight Director Flag Possible Causes:

  Before replacing any component perform BITE if available. (R/A R/T bite check in main E&E). Check for a valid RA signal in the HGS system.

  
  

  1.RA Receiver/Transmitter.

  
  

  2.Antenna.

  
  

  3.Wiring from the RA Receiver/Transmitter to the DEUs.

  
  
  F/D BOV:

  

  
  Circuit Breakers:

  R/A #1: P18-1 = B2.

  R/A#2: P6-1 = A16.

  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 MEL 34-20 Radio Altimeter System
  

Training Only