Oct 20, 2022 · This AC provides guidance for operating UA under the exception, including operations for certain educational and research purposes; FAA recognition of community-based organizations (CBO); and application for fixed sites and CBO-sanctioned UA flying events.

This advisory circular (AC) provides guidance to (1) persons operating unmanned aircraft (UA) under the exception for limited recreational operations of UA established in Section 349 of Public Law (P.L.) 115-254, FAA Reauthorization Act of 2018, codified at Title 49 of the United States Code (49 U.S.C.) § 44809; (2) persons using Unmanned Aircra...

Aug 3, 2016 · For specific information, you may request a copy of the aircraft record at https://aircraft.faa.gov/e.gov/ND/ The duration of aircraft registration certificates has been …

AC 91–57 () is an FAA Advisory Circular (AC) (Subject: Exception for Limited Recreational Operations of Unmanned Aircraft ) that provides interim safety guidance to individuals operating unmanned aircraft, commonly known as drones, but inclusive of flying model aircraft, for recreational purposes in the National Airspace System of the United Sta...

Below is our response to the FAA’s Advisory Circular 91-57c regarding the changes slated for the Exception for Limited Recreational Operations of Unmanned Aircraft.

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Jul 18, 2021 · Advisory Circular 91.57C is available on the FAA website only as a draft as of the time of writing. This means that anything written in the AC is not yet final and is now open to the public for comments. The deadline for comments is on August 9, 2021. The AC provides guidelines for pilots flying under Section 44809.

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o No. AC 91-57C provides application guidance for FAA recognition of CBOs. CBOs may tailor their safety guidelines for a particular type of model aircraft or drone flying (i.e. gliders, First-Person View flying, etc.).

Jul 30, 2015 · 内容提示： ICS 23.100.40 J 20 备案号：33643—2011 中 华 人 民 共 和 国 机 械 行 业 标 准JB/T 9157—2011代替 JB/T 9157—1999液压气动用球涨式堵头 尺寸及公差 Ball expansion type plugs for fluid power—Dimensions and tolerance 2011-08-15 发布 2011-11-01 实施中华人民共和国工业和信息化部 发布