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Night aviation regulations in the US
Night aviation regulations in the US are administered and enforced by the Federal Aviation Administration (FAA).
==Definitions==
Three definitions of night time are used in the Federal Aviation Regulations in the US:
# The period between sunset and sunrise, when aircraft position lights must be on.〔(【引用サイトリンク】 Title 14 CFR Part 91 Sec. 91.209 - Aircraft lights )〕
# The standard definition of "night" is the period between evening civil twilight and morning civil twilight.〔(【引用サイトリンク】 Title 14 CFR Part 1 Sec. 1.1 - Definitions and Abbreviations )〕 In addition to position lights, an approved anticollision light must be used at night.〔(【引用サイトリンク】 Title 14 CFR Part 91 Section 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and equipment requirements )〕 (AirNav ) is a good source for sunset and sunrise and evening civil twilight and morning civil twilight.
# The period between 1 hour after sunset and 1 hour before sunrise, which applies to airman currency requirements for carrying passengers.〔(【引用サイトリンク】 Title 14 CFR Part 61 Sec. 61.57 - Recent flight experience: Pilot in command. )〕
To log night flight training and required landings, one uses the standard definition of night.〔〔(【引用サイトリンク】 Title 14 CFR Part 61 Sec. 61.109 - Aeronautical Experience )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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