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IES Progress Report
Featured Events
Light + Justice Symposium
IES24 Conference
Street & Area Lighting Conference
Research Symposium
Special Events
Light for Life®: Museum Symposium
Illumination Awards & Gala
Lighting Education Tour
Aviation Lighting Conference
Research & Education
Research
About IES Research
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FIRES Forum
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obstruction beacon
[11.2.2.2.7] [See
hazard or obstruction beacon (aeronautical lighting)
.]
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