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  2. 2018 New York City helicopter crash - Wikipedia

    en.wikipedia.org/wiki/2018_New_York_City...

    The flight was being conducted by the operator Liberty Helicopters under 14 CFR 91 rules as an air tour for aerial photography for FlyNYON under 14 CFR 136 rules. [ 5 ] [ 6 ] According to a 2014 study, the crash rate of Part 91 air tours is 3.5 per 100,000 hours flown, "similar to the reported crash rates in categories considered to be 'high ...

  3. List of aviation, avionics, aerospace and aeronautical ...

    en.wikipedia.org/wiki/List_of_aviation,_avionics...

    Part of A/C air conditioning system ACMS Aircraft condition monitoring system ACP Audio Control Panel ACR Avionic Communication Router ACS 1: Airman Certification Standards [4] FAA pilot testing ACS 2: Audio control system ACU 1: Air condition unit ACU 2: Alternator control unit [2] Protection from alternator over-voltage. AD Airworthiness ...

  4. International Traffic in Arms Regulations - Wikipedia

    en.wikipedia.org/wiki/International_Traffic_in...

    Defense-related articles and services on the United States Munitions List (USML) [2] are covered by the ITAR, which implement the provisions of the Arms Export Control Act (AECA), and are described in Title 22 (Foreign Relations), Chapter I (Department of State), Subchapter M of the Code of Federal Regulations.

  5. Medical prescription - Wikipedia

    en.wikipedia.org/wiki/Medical_prescription

    The degree symbol (°), which is commonly used as an abbreviation for hours (e.g., "q 2-4°" for every 2–4 hours), should not be used, since it can be confused with a '0' (zero). Further, the use of the degree symbol for primary, secondary, and tertiary (1°, 2°, and 3°) is discouraged, since the former could be confused with quantities (i ...

  6. Classified information in the United States - Wikipedia

    en.wikipedia.org/wiki/Classified_information_in...

    For the most part, the exemption reasoning and caveats are outlined in paragraphs (b)–(d) and (g)–(i) of Sec. 3.3 of Executive Order 13526, but paragraph (b) is typically the one being referenced as the exemption reason value <m>.

  7. Civil Rights Act - Wikipedia

    en.wikipedia.org/wiki/Civil_Rights_Act

    This statute was a major part of general federal policy during Reconstruction, and was closely related to the Second Freedmen's Bureau Act of 1866. According to Congressman John Bingham , "the seventh and eighth sections of the Freedmen's Bureau bill enumerate the same rights and all the rights and privileges that are enumerated in the first ...

  8. Diving cylinder - Wikipedia

    en.wikipedia.org/wiki/Diving_cylinder

    As an example, a 12-litre cylinder may be filled to 230 bar before a dive, and be breathed down to 30 bar before surfacing, using 2,400 litres or 2.4 m 3 of free air. The mass of gas used during the dive will depend on the mixture - if air is assumed, it will be approximately 2.9 kilograms (6.4 lb).