Indicators Product Number 210-293-00

C-40 Cockpit Indicator

Increase productivity, safety, and accurate service reporting with digitally-precise weighing systems from Onboard Systems. The cockpit indicator is a key component of your Onboard Weighing System as it displays the weight of the cargo hook load to the pilot during external load missions.

The C-40 model builds on the legacy of its predecessor, the C-39, and has been designed from the ground up to incorporate several new, operator-requested features using advanced microcontroller technology to measure and display the cargo weight.



  • Drop-In Compatible: Uses the same electrical connector and mounting screws as the C-39 for a quick and easy upgrade without having to re-wire anything.
  • Simplifies Hook TBO Tracking: Includes an "Hours of External Load" meter to keep track of time against the cargo hook Time Between Overhauls (TBO) schedule.
  • Maximum Load Input: Easy to adjust as part of your daily weight-and-balance calculation process.
  • Full Digit Display: Shows actual weight in real time; eliminates “times 10” calculations used on the C-39 Cockpit Indicator.
  • Analog Bar Display: At-a-glance visual feedback changes color as maximum load is approached (see animated demonstration image above).
  • Intuitive Interface: Just turn the knob to scroll through the options and push to select.
  • Field Upgradeable: Download software upgrades from our website onto a thumbdrive and install.
  • Adjustable Analog Out: Factory-adjustable zero and span options are available.
  • Improved Contrast: Blanview LCD screen provides better visibility in sunlight.
  • Data Logging: A software upgrade to record time, load weight, and GPS coordinates for pick up and drop off locations is planned for Summer 2018.


  • Part Number210-293-00
  • Unit Weight .47 lb. (.21 kg)
  • Electrical Requirements 21-31 VDC