11. Except in Alaska, during what time period should lighted position lights be displayed on an aircraft?

Title 14 § 91.209 Aircraft lights.

No person may:

(a) During the period from sunset to sunrise (or, in Alaska, during the period a prominent unlighted object cannot be seen from a distance of 3 statute miles or the sun is more than 6 degrees below the horizon) —

(1) Operate an aircraft unless it has lighted position lights;
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