Visual observation of obstruction lights is required and accomplished how often in a 24 hour period?

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Multiple Choice

Visual observation of obstruction lights is required and accomplished how often in a 24 hour period?

The main idea being tested is the required frequency of visually checking obstruction lights. These lights must be observed once in each 24-hour period, i.e., daily, to confirm they are functioning properly. This daily check helps ensure the lights are still visible to aircraft and catches any burnout or fault promptly so repairs can be made before the next day of operation. While more thorough tests exist (for brightness, power systems, and overall performance) at longer intervals, the standard daily visual observation is the essential, minimal frequency to maintain ongoing conspicuity. Checking more often than once per day isn’t typically required and would add unnecessary workload.

The main idea being tested is the required frequency of visually checking obstruction lights. These lights must be observed once in each 24-hour period, i.e., daily, to confirm they are functioning properly. This daily check helps ensure the lights are still visible to aircraft and catches any burnout or fault promptly so repairs can be made before the next day of operation. While more thorough tests exist (for brightness, power systems, and overall performance) at longer intervals, the standard daily visual observation is the essential, minimal frequency to maintain ongoing conspicuity. Checking more often than once per day isn’t typically required and would add unnecessary workload.

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