Obstacle light for day and night time marking of structures that present a hazard to aviation. This L550-XXX-AD is specifically designed for the replacement market. White flashing in day and red flashing/steady burning in twilight and night mode. This specific L550 is using the same visual flashing characteristic as its predecessor the L450. Improving interchangeability and integration within a field of existing obstacle lights.

Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-01
Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-02
Orga Aviation – Datasheet Drawing – L550 – 20kd – rP02-03

    Key features

    • Similar white flashing characteristic as its predecessor the L450
    • Easy interchangeable within existing L450 obstruction light system setup
    • Integrated design with built-in photocell and monitoring – no additional power supply enclosures required
    • Housing based on 30 years of experience offshore product design experience
    • Orga optical design produces highly accurate and uniform narrow light beam
    • Lightweight and easy to install
    • Extremely low wind factor
    • Constant power draw in day mode – eliminates high peak power demands
    • No maintenance required over service life
    • Extremely low power consumption
    • Long life power supply to match LED life, does not use electrolytic capacitors
    • Optional integrated GPS based flash synchronisation between lights. UTC 0.0.0
    • 15-year field proven power supply technology
    • For replacement market only
    • Five year warranty
    • Made in the Netherlands


    • In compliance with ICAO Annex 14 Volume 1, Sixth Edition, July 2013, Chapter 6, Medium Intensity Type A / Type B / Type C obstacle light
    • Various national approvals available upon request

    Performance characteristics

    • Horizontal beam pattern: 360°
    • Flashing: see table
    • Effective intensity: see table
    • Vertical beam pattern: 3° minimum

     Electrical characteristics

    • Operating voltage: 120-240 Vac nominal 50-60 Hz
    • Power factor: >0.9 in day intensity mode
    • Power consumption: See table
    • Overvoltage protection: Class III according to IEC61643-1

    Physical characteristics

    • Dimensions: L x W x H:  see drawing
    • Weight: 12 kg
    • Design degree of protection: IP65
    • Operating temperature range: -40 ºC/+55 ºC
    • Shipping information: 550 x 550 x400 mm; approx. 16 kg
    • Supplied with pre-mounted Orga cable for easy installation and high reliability ready for use
    • Cable bending radius static: 7x cable diameter
    • Outer cable diameter: Ø12.5 +/- 0.5 mm
    • Cable weight: 260 g/m
    • Level indicators for correct mounting

    System design, control and monitoring

    • Use as a stand-alone light, or in a multiple light system with an Orga CIP controller
    • Optional Orga CIP controller facilities provides control interfaces for:
      • “smart switch” aircraft detection input
      • Visibility condition variable intensity input
      • Remote photocell control input/override
      • Visibility condition variable intensity input; intensity steps 30% and 10%