True or False: Temporary obstruction lights should be operated 24 hours per day at the uppermost part of a structure or object.

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Multiple Choice

True or False: Temporary obstruction lights should be operated 24 hours per day at the uppermost part of a structure or object.

Temporary obstructions must be marked and lit to warn pilots, and when a structure is temporary, the lighting at its highest point should be kept on around the clock for the duration of the obstruction. Keeping the topmost light on 24 hours a day ensures visibility to aircraft at all times, regardless of time of day, weather, or changing site conditions. The highest point is the critical hazard that pilots need to see clearly, so constant illumination reduces the risk of a collision. Therefore, the statement is true. Continuous operation helps avoid gaps in warning that could occur if lighting were limited to nighttime or only sometimes.

Temporary obstructions must be marked and lit to warn pilots, and when a structure is temporary, the lighting at its highest point should be kept on around the clock for the duration of the obstruction. Keeping the topmost light on 24 hours a day ensures visibility to aircraft at all times, regardless of time of day, weather, or changing site conditions. The highest point is the critical hazard that pilots need to see clearly, so constant illumination reduces the risk of a collision. Therefore, the statement is true. Continuous operation helps avoid gaps in warning that could occur if lighting were limited to nighttime or only sometimes.

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