ICAO Medium Intensity Type B or C

ICAO Medium Intensity Type B or C


This Avlite light fixture is a flashing, medium intensity LED obstruction light designed to comply with ICAO MIOL Type B or Type C requirements. The model can be used for marking obstacles from 45 metres above ground, such as telecommunication towers, wind turbines, buildings and other tall structures.

Avlite’s LED obstruction lights offer an ultra bright, energy efficient and cost effective lighting solution. The light fixture is available in two configurations, universal DC (12–48VDC) or universal AC (110–240VAC).
The advanced light optic uses multiple, high intensity LEDs for efficient operation. The corrosion resistant, acrylic lens is specifically designed for use with LEDs to maximize light intensity and uniformity. The light fixture incorporates internal diagnostic checking and an alarm contact for remote monitoring. The alarm relay is energised in normal operation and is released if there is an LED or power fault.



  • Cost effective, energy efficient obstruction lighting solution
  • Available in universal DC: will accept between 12–48VDC
  • Available in universal AC: will accept between 110–240VAC
  • Alarm contact for remote monitoring
  • Light sensor for day/night operation
  • LED technology reduces maintenance time and costs
  • Provision for external hardware synchronisation


  • Solar powered configurations
  • On-board GPS receiver for synchronisation
  • GSM monitoring to enable operators to remotely monitor the lighting status
  • RS422/485 communication ports for hardwired synchronisation or advanced monitoring


Certified to ICAO Annex 14 Volume 1, ‘Aerodrome Design and Operations’, Sixth Edition, July 2013, Table 6.3 – Medium Intensity Obstruction Light Type B (red flashing)