Digital Clock/USB Charger

Accurate time-keeping is essential for any pilot and in-flight USB charging power is a necessity. The MD93 Series Digital Clock/USB Charger features intuitive operation with four modes: Local Time, Universal Time, Flight Timer and Stopwatch. The Dual USB Charging Port charges any standard or high-power device with a USB interface, while protecting itself and the charging device from short circuit, power surges and over-current potential.


Product Flier

Installation Manual
IM 9018205

Technical Drawing
OL 6420093

Service Bulletins
SB MD93-01


  • More than 10-year internal battery maintains time and
    flight timer memory when
    not powered by the aircraft
  • Compact 2-inch size fits standard panel cutout
  • Short circuit, power surge and over-current protection
  • Designed and built in Wichita, Kansas, USA
  • One-year limited warranty
  • Output Power: 2.1 amps per
    USB port
  • Input Voltage: 10 – 32 VDC
  • Output Voltage: 5 VDC ± 0.25
    per USB port
  • Charge one or two products simultaneously at full power
  • Six-digit, seven-segment
    LED clock
  • Modes: Local Time, Universal Time, Flight Timer, Countdown Timer and Stopwatch

Technical Specifications

Model Number MD93
Part Numbers 6420093-1
Input Voltage 10–32 VDC
Input Current 31 W max; 2.2 amps at 14 VDC
1.1 amps at 28 VDC
Output Voltage 5 VDC ± 0.25 per USB port
Output Current 2.1 amps per USB port
Clock Accuracy ±0.5 seconds in 24 hours
Weight 0.3 lbs
Dimensions 2.39" W x 2.39" H x 1.15" D max
Temperature -40ºC to 70ºC (-40ºF to 158ºF)
Altitude 55,000 feet
Charging Port Type USB Standard-A
Mating Connector Kit MCI P/N 9018178
Mounting Rear-panel mounted, (4) #6 screws
Case Anodized aluminum black
Certification FAA TSO certified to C71
EASA ETSO certified to C71
RTCA DO-160G qualified

Related Proudcts

TA102 Dual USB Charging Port

Part Number 6430102-1 6430102-2 6430102-3 6430102-4
Power Input Rear Bottom Rear Bottom
USB Connector Sealed, Water Resistant Lighting