Honeywell Obstruction Lighting is located in Urbana, Ohio with business hours from 8:00 AM to 5:00 PM EST, Monday through Friday. For Obstruction Lighting Customer Service or Technical Support please call 877-285-4466 and select the appropriate option. International callers use 937-484-2000. For after hours Flex-Tech Support between 7am - 7pm EST please call 937-869-6406 or 937-869-6290, or arrange for an Evening or Weekend Technical Support appointment by calling 877-285-4466, Option 4, during regular business hours. New Page: Internet Sales Specials. These items will be available on a first come, first serve basis and quantities may be limited. Please contact Customer Service at 877-285-4466, option 1, to place an order for these items.

High Intensity Obstruction Lighting Standards (FAA Style C)

	L-856 High Intensity Strobe 3 Flashguards required per level for 360° coverage
	L-865 Medium Intensity Strobe required for appurtenances of 40 feet or greater

Notes:

• The height of the main structure excluding all appurtenances such as rods, antennas, obstruction lights, etc., determines the number of light levels.
  Note: Any appurtenances over 40 feet (12 meters) requires additional lighting, consisting of a Medium Intensity L-865 White Strobe.
• When high intensity white lights are operated 24 hours a day, other methods of marking and lighting may be omitted. This system should not be recommended on structures 500 feet (153 meters) AGL or less unless an FAA aeronautical study shows otherwise.
• The chart above illustrates the requirements for standard lighting of towers and supporting structures in accordance with FAA Advisory Circular 70/7460-1; Chapters 3, 4, 7, and 13.