Mid-Continent Chronos Digital Clock / Max Power USB Chargers

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Mid-Continent Chronos Digital Clock / Max Power USB Chargers

6 Reviews 2 Answered Questions Select Model: Dual USB-A / USB-C, 22-32VDC (8 Mode)Dual USB-A, 10-32VDC (8 Mode)Dual USB-A, 10-32VDC (5 Mode)Single USB-A, 10-32VDC (8 Mode)Clock Only, 10-32VDC (8 Mode) Quantity Add to Cart Add to Wishlist FREE Shipping Item qualifies for free outbound shipping. Please note other excluded items on the same order may incur a freight charge. Free shipping must be selected in cart for promotion to apply. Eligible for Flat Rate Shipping Item qualifies for flat rate outbound shipping. Please note other excluded items on the same order may incur a freight charge. Flat Rate Shipping must be selected in cart for promotion to apply. 30 Day Risk Free Purchase FREE Shipping + Returns Item qualifies for free outbound and return shipping. Please note other excluded items on the same order may incur a freight charge. Free shipping must be selected in cart for promotion to apply. 30 Day Risk Free Purchase Flat Rate Shipping + FREE Returns Item qualifies for flat rate outbound and free return shipping. Please note other excluded items on the same order may incur a freight charge. Flat rate shipping must be selected in cart for promotion to apply. Flat rate shipping will not be reimbursed if item is returned. 30 Day Risk Free Purchase Eligible for FREE Return Shipping Item qualifies for free outbound and return shipping. Please note other excluded items on the same order may incur a freight charge. Free shipping must be selected in cart for promotion to apply. JUMP TO

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• Overview
• Features
• Specifications
• Documents
• Accessories
• Reviews
• Q&A
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Overview

The CH93 series, part numbers 6420093-( ), is a multi-function digital clock / chronometer / voltmeter / temperature unit with multiple options for USB Charging Ports. The unit fits into a standard, rear-mounted, 2-¼” avionics panel cutout. Power is drawn from the aircraft main bus to light a white, six digit, seven segment LED clock. The clock can display several different modes: local time, universal time, flight timers, elapsed and countdown timers and optionally, bus voltage and up to two temperature inputs. The CH93 display is daylight readable with two methods of brightness control. It can be controlled automatically using the internal photocell or manually with an external dimming bus voltage. The CH93 clock has an internal battery to maintain clock time and flight timer memory when the aircraft is not in use. The USB Charging Ports are designed as DCPs (Dedicated Charging Ports) to industry-standard protocol per the USB Battery Charging 1.2 Compliance Plan. Some models also comply with the higher power requirements of USB Power Delivery 2.0 and 3.0. Early-generation or smaller consumer electronics typically accept one (1.0) amp during charging. However, newer electronics, such as tablets and larger devices can accept, and in some cases, require up to 3 amps to charge and operate.

Features

• Six-digit, seven-segment LED clock
• 8 Modes Local Time, UTC / Zulu Time, Flight Timer, Countdown Timer, Stopwatch, Volts, OAT and Secondary Air Temp (probes not included)
• Clock settings include 12- or 24-hour mode and seconds On or Off
• External lighting control and built-in photocell for automatic dimming
• Internal, field-replaceable battery maintains Time and Flight Timer
• memory, without aircraft power
• Compact, 2-inch size fits standard panel cutout
• Up to 75 watts total USB power
• Compatible with Apple, Android and other USB devices
• Protects itself and the charging device from short circuit, power surges
• and over-current potential
• Designed and built in Wichita, Kansas, USA
• 2-year limited warranty

Specifications

• Power Input: 10–32 VDC all models except 6420093-5 which is 22–32 VDC
• USB Power Output: 5 - 20 VDC (variable); 75 W, 6.0A
• Clock Accuracy: ±0.5 seconds in 24 hours, ± 3 minutes per year
• Weight: 5.0 oz (0.3 lbs)
• Modes: Local Time, UTC / Zulu Time, Flight Timer, Countdown Timer, Stopwatch, Volts, OAT and Secondary Air Temp (probes not included)
• Operating Temp: -40ºC to 70ºC (-40ºF to 158ºF)
• Altitude: 55,000 feet
• Mounting: Rear-panel mounted, (4) #6 screws
• Dimensions: 2.39 x 2.39 x 1.22 inches
• Connector Kit: MCIA P/N 8017287
• USB Interface: Dual USB-A/USB-C PD
• Case: Anodized aluminum black
• Certification: FAA TSO certified to C71, EASA ETSO certified to C71, RTCA DO-160G qualified

Documents

• Installation Manual and Operating Instructions (PDF)
• Drawing Specifications (PDF)
• MD93-01 Service Bulletin (PDF)

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Reviews

Submit a Review Alberta A Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-5 28V

July 25, 2025

Has all the features as advertised. The numbers are bright and crisp. The charger the most amazing feature.

Dadbeh J Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-5 28V

November 23, 2023

Nice a easy to used is complete intent

Alfonso C Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-2 Dual USB

November 18, 2023 Alfonso C Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-2 Dual USB

November 18, 2023 Brad L Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-4

February 11, 2023

Easy to install

Jason F Verified Purchase

Mid-Continent Instruments and Avionics CHRONOS Digital Clock 6420093-4

December 15, 2021

Q&A

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Please note, Aircraft Spruce ®'s personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce ® assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the diffrence between 10-06963 and 10-07295?

10-06963 is a clock with USB charging points. 10-07295 is a multi-function digital clock / chronometer / voltmeter / temperature unit with multiple options for USB Charging Ports.

Q: Do I need and STC to install this unit in my Mooney?

Those installing this article, on or in a specific type or class of aircraft, must determine that the aircraft installation conditions are within the TSO standards, specification of the article and deviations as listed above. TSO articles must have separate approval for installation in an aircraft. The article may be installed only according to 14 CFR part 43 or the applicable airworthiness requirements.

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