Products


M811 Features

  • 2 ¼" INTERNAL MOUNT
  • SIX-DIGIT DISPLAY ON ALL 3 FUNCTIONS
  • LOCAL TIME
  • FLIGHT TIME
  • ELAPSED TIME COUNTER
  • SUNLIGHT READABLE DISPLAY
  • NVIS GREEN A OPTION
  • MEMORY BATTERY INCLUDED
  • FAA-PMA APPROVED

# # #
Model 811B operational input is 11V - 30V.  Local Time is user selectable 12 or 24 hour.  If customer request custom set-up from the factory, contact distributor.

811B-24 LT 24 HR, FT & ET CLOCK (user selectable 12 or 24hr)
811B-24A 811B-24 WITH GRAY FACEPLATE (user selectable 12 or 24hr)
811B-24-NVG 811B-24 WITH NIGHT VISION COMPATIBILITY (GREEN A) (user selectable 12 or 24hr)
811B-24-NVG-15 811B-24 WITH NIGHT VISION COMPATIBILITY WITH KW515-4F DISPLAYS (GREEN A) (user selectable 12 or 24hr)
KW515-4F SUPER BRIGHT DISPLAY
REPLACEMENT PARTS
KW505F REPLACEMENT DISPLAY
811-BATT-1 811B MEMORY BATTERY PACK
811-STD STANDARD FEMALE CABLE CONNECTOR
811-INV INVERTING FEMALE CONNECTOR
811-28 811B DROPPING RESISTOR
  • Six-digit display on all three functions
  • Local Time: 12 hour or 24 hour option (user selectable)
  • Flight Time: 24 hour
  • Elapsed Time Count Up: 24 hour
  • Battery supplied with a typical two year operating life. 6 Volts - 1 Amp hour
  • Polaroid filter
  • Incandescent Displays: Readable in sunlight
  • Input Voltage: 14 Volts
  • Input Current: 0.4 Amps
  • Maximum depth from mounting surface: 2.8"
  • Black Faceplate: Engraved Nomenclature
  • Grey Faceplate: Silkscreened Nomenclature
  • Weight: 7.5 ounces
  • Warranty: 1 year


Davtron Inc has determined that installation of all Davtron products are considered minor according to (FAR) 21.93(a).  All of our units are similar in design, with their electrical, mounting size, and weight being similar.  Even though we consider installation of Davtron products to be minor, it is up to the installing mechanic to determine if the installation is minor or major.  For a minor, a maintenance log book entry is all that is required.   The FAA has determined that the installation of replacement clocks in non-transport category airplanes is considered to be minor, therefore only a maintenance log book entry is required referencing letter 100S-GA-10-53 from the FAA.  For a major installation on a non PMA approved airframe, a FAA 337 form should be filed with your local FSDO and a possible field approval done.   FAA PMA# PQ1062NM  (View a sample 337 form)

Davtron Inc. recommends that you purchase our products through your local avionics shop and have them do your installation. They know how to handle all the log book entries you need for FAA approval.

INSTALLATION ELIGIBILITY

  • BAE Jetstream Models 3101 and 3201
  • Beech Models 35, A35, B35, C35, D35, E35, F35, G35, H35, J35, K35, M35, N35, 35-33, and 35-A33
  • British Aerospace Model BAE/Avro 146
  • British Aerospace Model 125-700
  • DeHavilland Models Dash-8 Series 100 (101,102,103)
  • DeHavilland Models Dash-8 Series 300 (301, 311)
  • Falcon Models 10, 900EX, and 2000
  • Gates Learjet Models 24E, 24F, 25D, 25F, 35A, and 36A
  • IAI Models 1125WW Astra and Astra SPX
  • Mystere Falcon Models 50, 200, and 900
  • Waco Model Classic WACO F5 and F5c

The 811-BATT-1 replacement batteries do not  have PMA by themselves, they are part of the higher PMA assembly 811B clock.




Frequently Asked Questions

 

Q: My unit is not letting me reset FT and or not keeping time, what is wrong?

A: The memory battery is very low or dead and needs to be replaced. Battery should be replaced every two years. Replace at top of hour to have minutes close to 00:00.

 

Q: I can't set the minutes on my clock, why not?

A: On the older 811B clocks, under serial # A40000, you can only set minutes by speeding up or pausing the seconds.

 

Q: One of my digits is missing, how do I fix it?

A: The digits are field replaceable, and mounted in sockets. All 6 digits are the same and the part # is KW505F.