ICAO Annex 14 Obstacle Light Requirements

Per International Civil Aviation Organization (ICAO) obstacle light requirements, all structures exceeding 45 meters above ground level (AGL) must be appropriately marked with aviation warning lights or paint. The information below provides guidance on ICAO lighting recommendations per ICAO Annex 14 6th Edition.

 

To help clients adhere to ICAO obstacle light requirements, Flash Technology offers a suite of compliant aerodrome lighting products. If you would like help determining what aviation obstruction lights are best suited your site, please contact us.

ICAO lighting requirements vary depending on the above ground level of the structure including any appurtenances. The graphics below reflect tower paint and obstruction lighting requirements and are based on International Civil Aviation Organization (ICAO) Annex 14 7th edition guidelines.

Dual Lighting

Red Lighting

White Lighting

International lighting requirements state that wind turbines, catenaries, bridges and other structures must also be marked if they present an aviation hazard.

Low Intensity Type A
Steady-Burning – RED
10 cd at night

Low Intensity Type B
Steady-Burning – RED
32 cd at night

Low Intensity Type C
Flashing (60-90 fpm) – YELLOW / BLUE
40 cd at twilight and night

Low Intensity Type D
Flashing (60-90 fpm) – YELLOW
200 cd at twilight and night

Low Intensity Type E
Flashing – RED
32 cd at night

Medium Intensity Type A
Flashing (20-60 fpm) – WHITE
20,000 cd at day and twilight; 2,000 cd at night

Medium Intensity Type B
Flashing (20-60 fpm) – RED
2,000 cd at night

Medium Intensity Type C
Steady-Burning – RED
2,000 cd at night

Medium Intensity Dual Types A and B
Flashing (20-60 fpm) – WHITE DAY; Flashing (20-60 fpm) – RED NIGHT
20,000 cd at day and twilight; 2,000 cd at night

Medium Intensity Dual Types A and C
Flashing (20-60 fpm) – WHITE DAY; Steady-Burning – RED NIGHT
20,000 cd at day and twilight; 2,000 cd at night

High Intensity Type A
Flashing (40-60 fpm) – WHITE
200,000 cd at day; 20,000 cd at twilight; 2,000 cd at night

High Intensity Type B
Flashing (40-60 fpm) – WHITE
100,000 cd at day; 20,000 cd at twilight; 2,000 cd at night

High Intensity Type A
Flashing (40-60 fpm) – WHITE
200,000 cd at day; 20,000 cd at twilight; 2,000 cd at night

High Intensity Type B
Flashing (40-60 fpm) – WHITE
100,000 cd at day; 20,000 cd at twilight; 2,000 cd at night

(cd=candela; fpm = flashes per minute)

ICAO does not provide official recommendations for the monitoring of obstacle lighting.

 

Automatic monitoring of airfield lighting, including runway approach lights, is required. Please see ICAO Annex 14 Chapter 8 as well as Document 9157 – Aerodrome Design Manual Part 5 Electrical Systems (2nd edition) for specific details on airfield light monitoring.