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  2. Radiotelephony procedure - Wikipedia

    en.wikipedia.org/wiki/Radiotelephony_procedure

    Radio call signs are a globally unique identifier assigned to all stations that are required to obtain a license in order to emit RF energy. The identifiers consist of from 3 to 9 letters and digits, and while the basic format of the call signs are specified by the ITU-R Radio Regulations, Article 19, Identification of stations, [5] the details are left up to each country's radio licensing ...

  3. Remote ID - Wikipedia

    en.wikipedia.org/wiki/Remote_ID

    Remote ID is a regulation of the US Federal Aviation Administration that requires registered drones (unmanned aircraft systems or UAS) to broadcast certain identifying and location information during flight, akin to a digital license plate for drones. [1]

  4. NIOSH air filtration rating - Wikipedia

    en.wikipedia.org/wiki/NIOSH_air_filtration_rating

    During the COVID-19 pandemic, the mask and respirator market rapidly grew, along with counterfeit respirators. [1] NIOSH, on behalf of the Department of Health and Human Services, filed a trademark application on June 17, 2020, for various 42 CFR 84 trademarks, including the N95, allowing NIOSH to enforce rules on counterfeit masks outside of rules defined in 42 CFR 84.

  5. Terrain awareness and warning system - Wikipedia

    en.wikipedia.org/wiki/Terrain_awareness_and...

    Findings from these early studies indicated that many such accidents could have been avoided if a GPWS had been used. As a result of these studies and recommendations from the U.S. National Transportation Safety Board (), in 1974 the FAA required all 14 CFR 121 (Part 121) certificate holders (that is, those operating large turbine-powered airplanes) and some 14 CFR 135 (Part 135) certificate ...

  6. Special access program - Wikipedia

    en.wikipedia.org/wiki/Special_access_program

    Authorized Classification and Control Markings Register Version 1.2, 12 May 2008; DCID 3/29, Controlled Access Program Oversight Committee, 2 June 1995; DOD 5220.22-M, National Industrial Security Program Operating Manual (NISPOM), 28 February, 2006; DODD 5200.1-R, Information Security Program, January 1997

  7. Single Audit - Wikipedia

    en.wikipedia.org/wiki/Single_Audit

    In the United States, the Single Audit, Subpart F of the OMB Uniform Guidance, is a rigorous, organization-wide audit or examination of an entity that expends $750,000 or more of federal assistance (commonly known as federal funds, federal grants, or federal awards) received for its operations.

  8. Rail transport in Romania - Wikipedia

    en.wikipedia.org/wiki/Rail_transport_in_Romania

    Push-pull operations on the electrified standard gauge lines are often carried out using locomotives of the Electroputere LE5100 family (or CFR Class 47). DMUs include the X 4500 and X 72500 (both ex SNCF) and CFR Class 96. Previously operating EMUs included the CFR Class TEA. Romania is a member of the International Union of Railways (UIC).