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Flash Products

FTS 370i-2 Vanguard Integrated Wind Turbine Lighting

L-864 LED Obstruction Lighting System for Wind Turbines

The Vanguard Medium FTS 370i-2 IR is available as an FAA L-864 or ICAO Type B medium intensity aircraft warning light specifically designed for wind turbines. The FTS 370i utilizes LED technology, advanced optics and industry-leading surge protection to ensure long-term reliability and compliance. For wind turbines with a rotor tip height between 500’ and 700’, two Vanguard 370i-2 IR units can be used together on one nacelle to meet FAA AC 70/7460-1L specifications.


Standard Features

  • Powder-coated aluminum top plate and base
  • Fully integrated system – no external controller
  • Dry contact for integration with Aircraft Detection Lighting System (ADLS)
  • Surge immunity of 25kA withstands 99% of all lighting strikes
  • GPS for synchronized flashing
  • Patented 360-degree light collector to control mode change
  • Infrared (IR) LEDs for compatibility with NVG and NVIS
  • Patented Fresnel optics to minimize ground scatter
  • Field configurable flash rate to 20 or 30 fpm
  • 1 dry contact relay: beacon, sync and mode status


System Options

  • Mounting brackets available for multiple turbine manufacturers
  • Additional overvoltage protection (OVP) device protects against lightning strikes(approved for Siemens turbines)


Regulatory Compliance

  • FAA L-864 per AC 150/5345-43J
  • ICAO Medium Intensity type B
  • DGAC L-864
  • CSA
  • CE



  • 5-year parts warranty

Please fill out the form below or call 615.503.2000 with questions or to order this product.

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    Input Voltage

    120-240 VAC


    50-60 Hz

    FH Dimensions

    15.75″ dia. x 7.31″ height
    (8.7″ to the top of GPS)
    400 dia. x 180.6 mm (220.7 mm top of GPS)

    FH Weight

    26.3 lbs (11.9 kg)

    FH Aerodynamic Wind Area

    99.125 in2 (63,900.51 mm2)

    Protection Rating



    Night Power Consumption

    20 fpm

    30 fpm

    40 fpm

    L-864 red night at 2,000 ± 25% ECD flash intensity

    7 watts

    10 watts

    13 watts

    Power consumption is 2 watts in stand-by.


    FAA logoIntertek L864 FTS 370i-2 IR certification to FAA AC 150-5345-43J (476)
    ICAO logoICAO 6th Edition
    DGAC Mexico logoDGAC
    CSA logoCSA Certificate of Compliance FTS 370i and FTS 370i IR
    CE logoCE Declaration of Conformity FTS 370i
    Flash Technology is an ISO 9001:2015 certified manufacturing facility.Flash Technology is an ISO 9001:2015 manufacturing facility.



    FTS 370i datasheet


    Current Manual

    Vanguard FTS 370i-2 Rev A
    Manuals for older product revisions can be found in the Knowledge Base.



    Flash Technology Vanguard-HD