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TWX670 Tactical Weather Detection System

Avidyne TWX670 Tactical Weather System System

TWX670 Weather System




  • Overview
  • Specifications
  • TWX670 Video

TWX670 Tactical Weather Detection System

Introducing the TWX670 Tactical Weather Detection System - Lightning is the first physical property of a storm cell that can be detected, and unlike precipitation, lightning is the best determinant of dangerous thunderstorm activity.

“Gear of the Year -2012” – Aviation Consumer

“For the serious weather pilot, having both NEXRAD and lightning detection brings an undeniable edge. By tracking strike rate, sferics give instantaneous information on a storm’s maturity level and of all the detectors we’ve tried, Avidyne’s TWX670 has the best overall feature set for the price.”


Avidyne TWX670

Avidyne’s new TWX670 is a third-generation lightning-based weather detection system that provides a simple and intuitive color-contoured display with instantaneous picture of surrounding weather.

Great Accuracy Means Truly Tactical Weather Detection

The TWX670 is the first and only lightning-based, real time, tactical, color weather avoidance solution. It accurately detects and clearly displays electrical discharges– the primary indicator of thunderstorms–in real time, regardless of aircraft maneuvering. With its significantly-improved accuracy over previous-generation lightning detection systems, the TWX670 provides true tactical weather avoidance in the critical 0 – 25nm range, making it a perfect complement to the strategic benefits of satellite-based datalink weather.

Completing the Picture

Lightning is one of the first physical properties of a storm cell that can be detected, and unlike precipitation, lightning is the best determinant of dangerous thunderstorm activity. Storm cells and their intensities are displayed in color contours eliminating the guess-work associated with interpreting legacy weather displays. Providing a color-contoured map of a thunderstorm’s electrical activity over time, the TWX670 easily allows the pilot to determine the areas of greatest intensity, and clearly identify areas with potential for convective wind shear, turbulence, microbursts, hail and icing.

TWxCell Mode™

TWX670 TWX ModeWith the TWX670’s color-contoured TWxCell Mode, each cell grid is displayed as a hexagonal array of cell weights (colors). Color-filled hexagons highlight the most intense regions of thunderstorm activity, presenting a visually contoured color display with dynamic sectors. TWxCell Mode permits the pilot to quickly identify the most intense regions of thunderstorm activity.

The TWX670 combines the data of all lightning activity occurring over a running three-minute period, regardless of the number of strikes. This provides a meaningful dynamic map of the lightning discharge rate and density for immediate visual acquisition of critical information. With the TWX670, there’s no need to spend time observing discrete events to determine the level of thunderstorm activity.

Strike Mode

TWX670 Strike ModeIn Strike Mode, up to 1024 strikes are displayed for up to 3 minutes. Each transmitted strike includes range, bearing, and weight (color). Regional activity, not age, determines the strike color. Strikes that are more recent but further away cannot “drown out” flashes that are closer and less recent. This provides a level of comfort to pilots transitioning from less capable systems. Color enhancement helps to identify areas of high intensity while still providing a view of the discrete events.

Versatile MHD300

TWX670 Displayed on MHD300

Avidyne’s MHD300 can display TWX670 Lightning, traffic when interfaced with the TAS600-Series TAS, and TAWS when interfaced with a Honeywell EGPWS system. Its standard 3-ATI form factor allows for easy installation in virtually any fixed-wing or rotorcraft panel. NVG-compatible versions are also available. Click here for more information on the MHD300.

TWX670 Specifications

Product Features

• Close-range lightning detection
(0nm-25nm and up to 200nm)
• Geo-stabilized lightning
• Audible callouts
• High degree of noise immunity
• Clear and Restore capability
• Built-in test capability
• Built-in skin mapping and noise analysis


TWX670 Sensor
TSO-C110a Airborne Passive
Thunderstorm Detection


• Width: 2.5" (64mm)
• Height: 4.0" (102mm)
• Depth: 7.9" (201mm)

1.4 lbs (0.64 kg)


• 10-30 VDC, 0.4 A @ 28 VDC

Display Options:

• 7ea RS-232 Outputs to drive:
- Avidyne MHD300(TWxCell & Color Strike Modes)
- Avidyne EX500/EX5000 MFD
- Many popular 3rd-party Lightning Displays (Compatibility Mode)

ANT67 Antenna


• Width: 5.0" (127mm)
• Height: 1.3" (33mm)
• Length: 9.5" (241mm)


1.7 lbs (0.77 kg)

MHD300 Multi-Hazard Display


• Width: 3.18" (80.8mm)
• Height: 3.18" (80.8mm)
• Depth: 7.36" (186.9mm)


1.88 lbs (0.85 kg)

• TSO-C110a Airborne Passive Thunderstorm Detection
• TSO-C113 Multi Purpose Display
• TSO-C147 Traffic Advisory System(TAS)
• NVG compatible
• Available in gray or black bezel

See how the TWX670 can help for safer flying.