• DME Fail Flags: Notes:
  • The amber DME flag replaces the DME distance reading on the Nav Data Display and Primary Flight Display.
  
  
  • The DME flag will show on the Nav Data Display when in the VOR or APP mode.
  
  
  
  
  DME Fail Possible Causes:

  Before replacing any component perform BITE if available. Perform a DME interrogator bite in the E&E or a nav control panel test.

  
  

  1.DME Interrogator

  
  

  2.Wiring from the DME interrogator to the DEUs
  
  

  3.Wiring from the NAV Control Panel to the DME Interrogator
  
  DME Flag:

  

  
  

  

  
  Circuit Breakers:

  DME #1: P18-1 = B3.

  DME #2: P6-1 = A14.

  
  
  Applicable deferrals MEL 34-13 Distance Measuring Equipment Systems
  

Training Only