• DME No Computed Data (NCD): Notes:
  • DME distance is removed and replaced by dashes. The dashes show on the Primary Flight Display and the Nav Data Display.
  
  
  • DME information will show on the Nav Data Display when in the VOR or APP mode.
  
  
  
  
  DME NCD 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.NAV Control Panel
  
  

  3.DME Antenna's
  
  

  4.Wiring from the Nav Control Panel to DME interrogator
  
  

  5.Wiring from the Antennas to the DME interrogator
  
  

  6.Ground Station issus
  
  DME NCD:

  

  
  

  

  
  Circuit Breakers:

  DME #1: P18-1 = B3.

  DME #2: P6-1 = A14.

  
  
  Applicable deferrals MEL 34-13 Distance Measuring Equipment Systems
  

Training Only