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M803 Digital Clock

Price range: $498.00 through $821.00

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

Frequently Bought Together

Model Type

Clear

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Description

Part Number		Part Description
M803-5V		MODEL 803-5V UT, LT, FT, & ET DIGITAL CLOCK 5V LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
M803-5V-NVG		MODEL 803-5V-NVG UT, LT, FT, & ET DIGITAL CLOCK 5V NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
M803B-2-0/5V-BATT		MODEL 803-5V-BELL UT, LT, FT, & ET DIGITAL CLOCK 5V LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED) BELL PN. M803B-2-0/5V-BATT
M803-14V		MODEL 803-14V UT, LT, FT, & ET DIGITAL CLOCK 14V LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
M803-14V-NVG		MODEL 803-14V-NVG UT, LT, FT, & ET DIGITAL CLOCK 14V NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
M803-28V		MODEL 803-28V UT, LT, FT, & ET DIGITAL CLOCK 28V LIGHTING, VOLTMETER, OAT (F & C) (TEMP. PROBE INCLUDED)
M803-28V-NVG		MODEL 803-28V-NVG UT, LT, FT, & ET DIGITAL CLOCK 28V NIGHT VISION LIGHTING GREEN A (TEMP. PROBE INCLUDED)
M803B2-0/28V-B		MODEL 803-28V-CESSNA CLOCK OAT VOLTMETER GRAY BUTTONS 28V LIGHTING CESSNA PN. M803B-2-0/28V-B

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

M803 Brochure/Manual (PDF)
Electrical (PDF)
Overall Dimensions (PDF)
Continuing Airworthiness (PDF)
Temp. Probe Analog 12ft Part # C307PS (PDF)

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.