• Vertical Speed Indication (VERT) Fail Flag: Notes:

  The vertical speed is removed and the VERT flag is displayed.

  
  
  Vertical Speed Indication (VERT) Fail Flag Possible Causes:

  Before replacing any component perform BITE if available. (ADIRU-Current Status or Inflight Faults)

  
  

  1.ADIRU

  
  

  2.DEU

  
  

  3.Wiring from the ADIRU to the DEUs

  
  

  4.Wiring (external) from the Air Data side of the ADIRU to the Inertial Reference side

  
  
  Vertical Speed Indication (VERT) Fail Flag:

  

  
  

  

  
  Circuit Breakers:

  ADIRU Left (AC): P18-1 = E7.

  ADIRU Left (DC): P18-1 = E5.

  ADIRU Left EXC: P18-2 = E8.

  ADIRU Right (AC): P6-1 = C14.

  ADIRU Right (DC): P6-1 = C17.

  ADIRU Right EXC: P6-1 = C15.

  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 None, The air-data part of the ADIRU has to work.
  

Training Only