The airborne APE 5900 is a 3ATI, GPS-synchronized Electronic Clock compatible with the use of NVG on-board military and government agencies platforms.

Cobham's APE 5900 clock meets the highest performance demands while providing all expected functionalities. It is an integral part of an avionics installation, delivering GPS synchronization accuracy and degraded-flight mode security its ARINC 429 output.


This 3ATI electronic clock, with wide-viewing angle and day/night automatic dimmable backlight, provides excellent reading comfort and an intuitive interface. It is compatible with the use of Night Vision Goggles and is a derivative version of the APE 5100 clock, certified for commercial airplane applications. In degraded-flight mode, when GPS is not available, the APE 5900 clock is designed to supply accurate time reference for use by the avionics system.



Main advantages:

  1. 3ATI for excellent reading comfort
  2. GPS synchronization for highest precision
  3. ARINC 429 output for degraded-flight mode
  4. Remote controls chronometer
  5. Proven record of high reliability

Automatic dimmable backlight


Displayed information:

  1. 6-digit Universal Time Coordinated (UTC)
  2. 4-digit Elapsed Time (ET)
  3. 4-digit Chronometer (CHR)



  1. 3-position selector for GPS, INT (LT Local Time) and SET functions
  2. 3-position selector for RUN, STP and RST functions of the ET
  3. Turn and push button for updating of data (DATA/SET)
  4. 2 push buttons for control of the chronometer (CHR, RST)
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