Products


M803 Features

  • 2 ¼" INTERNAL MOUNT
  • LASER ENGRAVED FACEPLATE
  • UNIVERSAL TIME
  • LOCAL TIME
  • FLIGHT TIME WITH ALARM
  • ELAPSED TIME WITH COUNTDOWN TIMER
  • ELASPED TIME ALARM
  • OPTION AUDIO ALARM
  • LIQUID CRYSTAL DISPLAY
  • VOLTAGE
  • O.A.T. FAHRENHEIT & CENTIGRADE
  • NIGHT ILLUMINATION
  • NVIS GREEN A OPTION
  • KEEP ALIVE BATTERY OPTION
  • FAA-PMA APPROVED

# # #
Model 803 operational input is 11V - 30V.  The referenced 5V, 14V and 28V listed below identify lighting configuration for the backlight operation for nightime viewing.  Local Time is user selectable 12 or 24 hour.  If customer request custom set-up from the factory, contact distributor.

803-5V   UT, LT, FT & ET DIGITAL CLOCK 5 VOLT LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
803-14V UT, LT, FT & ET DIGITAL CLOCK 14 VOLT LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
803-28V UT, LT, FT & ET DIGITAL CLOCK 28 VOLT LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
803-5V-NVG   803-5V WITH NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
803-14V-NVG 803-14V WITH NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
803-28V-NVG 803-28V WITH NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
REPLACEMENT PARTS
C307PS PROBE-12FT-WHT-C307PS TEMPERATURE PROBE 12FT COAX (ANALOG)
SONALERT AUDIO ALARM FOR MODELS 800, 803, 850, & 877
MD9F20JVL0  9 PIN FEMALE CONNECTOR ASSEMBLY
  • Universal Time: 24 hour format
  • Local Time: 12 hour or 24 hour option
  • Flight Time: Records in hours and minutes, up to 99:59
  • Flight Time Alarm: Full set range of flight time
  • Elapsed Time Count Up: Starts in minutes and seconds, then hours and minutes, up to 99:59 hours
  • Elasped Time Countdown: Settable from one second to 59 minutes and 59 seconds
  • Elapsed Time Alarm: Activates at zero when counting down
  • Voltage Range: 8 Volts to 32 Volts ±0.2 Volts Typ. -55°C to +100°C ±0.2°C Typ.
  • Internal Lighting: 240 mA at 5V, 240 mA at 14V, 100 mA at 28V (specify voltage when ordering)
  • Keep Alive Current: 0.004 Amps. 12 to 30 Volts
  • LCD Display
  • Input Voltage: 12 to 30 Volts
  • Input Current: .2 Amps
  • Battery Type: AA memory battery
  • NVIS Option: NVIS Green A lighting
  • Voltage: 12 to 30 Volts
  • Weight: 5.02 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

  • Bell Helicopter Textron Model 407




Frequently Asked Questions

 

Q: My clock is displaying all 88:88's on the bottom of the display, what is going on?

A: First check memory battery and see if it is low or dead, remove battery and power up unit and see if that fixes your problem. If not, it is probably a bad display driver and unit would need to be sent in for repair.

 

Q: My backlighting is uneven or doesn't work, what is wrong?

A: The unit uses incandescent bulbs and some or all of them have probably burnt out.

 

Q: My unit is reading _ _ _ on temp reading, what does this mean?

A: It means the unit is not seeing the probe, it is either a bad connection, or a bad probe. Check wiring then replace probe if wiring is fine.

 

Q: My unit is reading --- on the top line of the temp display, what does this mean?

A: This means there is probably a short inside the probe, replace probe, C307PS.

 

Q: My display digits are off, ghosting, what is wrong?

A: The LCD display has moved inside the unit and is miss-aligned and needs to come back in for alignment. It is possible that the LCD display could be cracked in one of the corners.

 

Q: My button fell off, how do I fix it?

A: You can either send unit in for repair, or replace button with 5 minute 2 part epoxy. Remove case with single screw in back and glue button to switch shaft. Place unit face down on buttons till glue dries.

 

Q: When trying to set time, FT, or ET, more than the flashing digit is changing, what is wrong?

A: The clock IC has failed and needs to be replaced.