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 Instruments - Davtron - 800 Series
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DAVTRON DELUXE DIGITAL CHRONOMETER M850 AND M877
 
Model 850 (Front Mount)
Model 877(Rear Mount)
Model 850 NVG(Front Mount)

Davtron Models 850(Front Mount) and 877 (Rear Mount) Deluxe Digital Chronometers provides Greenwich mean time, local time, flight time recorder, & an elapsed time counter.

Download the M850 brochure here.

Download the M877 brochure here.
Download the Drawing (PDF)

 Download the M850 Electrical Input (PDF)

Installation Eligibility
  • Mystere Falcon 50 and 900
  • Learjet Airplanes 35A and 60
  • Bae Jetstream Model 4101
If your airframe is not listed for the unit you're installing you need to complete a 337 form and file with your local FSDO. Download FAA 337 Form
 
  • Two button control system is natural and error free.
  • Setting operations are identical for both alarm and time setting.
  • Bright sunlight readable incandescent displays.
  • Illuminated buttons and annunciators for night viewing.
  • Flight Time recorded in hours and minutes or in hours, tenths, and hundredths.
  • Flight time alarm with external output.
  • Elapsed time count down timer with alarm.
  • A 4 MegaHertz crystal precision time reference.
  • Greenwich Mean Time (GMT): 24 hour format.
  • Local Time: 12 hour format, 24 hour option.
  • Flight Time: Records in 99:59 standard, 99:99 hour option.
  • Flight Time Alarm: Full set range flight time.
  • Elapsed Time Count Up: Starts in minutes, seconds, then hours,minutes up to 99:59 hrs.
  • Elapsed Time Count Down: Settable from 1 sec. to 59 minutes, 59 sec.
  • Elapsed Time Alarm: Activates at zero when counting down.
  • Incandescent Displays: Readable in sunlight.
  • Input Voltage: 28V (14V or 5V backlight available)
  • Automatic Dimming
  • Battery Type: AA alkaline.
  • Polarizing Filter
  • Keep Alive Current: .00004 Amps.
  • Input Current: .2 Amps.
  • Crystal Reference: -40C to +60C .001%
  • Weight: 5 ounces.
  • Warranty: 1 year.
Description Part No. Price Buy
850-5V
M850 WITH 5V LIGHTING		10-03310$360.95
850A-5V
IS THE 850-5V WITH THE GREY FACEPLATE		10-03311$369.95
850-5V-NVG
IS THE 850-5V WITH NIGHT VISION COMPATIBILITY (GREEN A)		10-03306$508.00
850A-5V-NVG
IS THE 850-5V-NVG WITH THE GREY FACEPLATE		10-03347$539.00
850-2-5V
REAR MOUNT NIGHT VISION (GREEN A)		10-04725$597.00
850-14V
M850 WITH 14V LIGHTING		10-03312$388.00
850A-14V
IS THE 850-14V WITH THE GREY FACEPLATE		10-03348$382.95
850-14V-NVG
IS THE 850-14V WITH NIGHT VISION COMPATIBILITY (GREEN A)		10-03349$492.95
850-2-14V
REAR MOUNT NIGHT VISION (GREEN A)		10-04726$597.00
850A-14V-NVG
IS THE 850-14V-NVG WITH THE GREY FACEPLATE		10-03350$492.95
850-28V
M850 WITH 28V LIGHTING		10-03313$388.00
850A-28V
IS THE 850-28V WITH THE GREY FACEPLATE		10-03314$382.95
850-28V-NVG
IS THE 850-28V WITH NIGHT VISION COMPATIBILITY (GREEN A)		10-03351$536.00
850-2-28V
REAR MOUNT NIGHT VISION (GREEN A)		10-04727$597.00
850A-28V-NVG
IS THE 850-28V-NVG WITH THE GREY FACEPLATE		10-03352$539.00
877-5V
M877 WITH 5V LIGHTING		10-03308$382.95
877A-5V
IS THE 877-5V WITH THE GREY FACEPLATE		10-03309$374.95
877-5V-24
IS THE 877-5V WITH 24 HR LT		10-03353$399.50
877-14
M877 WITH 14V LIGHTING		10-24545-14$377.95
877A-14V
IS THE 877-14V WITH THE GREY FACEPLATE		11-05879$369.00
877-14V-24
IS THE 877-14V WITH 24 HR LT		11-05878$356.95
877-28V
M877 WITH 28V LIGHTING		10-24545-28$377.95
877A-28V
IS THE 877-28V WITH THE GREY FACEPLATE		11-05880$395.95
Description Part No. Price Buy
DAVTRON DISPLAY FOR MODEL 303, 655, 850, 877, & 88011-04612$47.50
AUDIO ALARM (800, 803, 850, & 877)11-04610$39.50