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並前往https://www.faa.gov/documentlibrary/media/advisory_circular/ac_91-57a.pdf

September 2, 2015 Initiated by: AJV-115 AC No. 91-57A 1 ...

Date: September 2, 2015. Initiated by: AJV-115. AC No. 91-57A. 1. PURPOSE. This advisory circular (AC) provides guidance to persons operating Unmanned.

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