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  2. N95 respirator - Wikipedia

    en.wikipedia.org/wiki/N95_respirator

    An N95 respirator is a disposable filtering facepiece respirator or reusable elastomeric respirator filter that meets the U.S. National Institute for Occupational Safety and Health (NIOSH) N95 standard of air filtration, filtering at least 95% of airborne particles that have a mass median aerodynamic diameter of 0.3 micrometers under 42 CFR 84, effective July 10, 1995.

  3. Practical Test Standards - Wikipedia

    en.wikipedia.org/wiki/Practical_Test_Standards

    Beginning in 2011, the FAA began an effort to supersede the Practical Test Standards with the Airman Certification Standards. These would add "task-specific knowledge and risk management elements." This took effect for PAR and IRA in June 2016, with revisions (such as slow flight proficiency and testing of the initiation of a stall) and the ...

  4. Instrument rating in the United States - Wikipedia

    en.wikipedia.org/wiki/Instrument_Rating_in_the...

    The rating is also required: When flying an airplane under Special VFR at night (helicopters are excepted from the regulation). When a commercial pilot is flying an airplane carrying passengers for hire on flights in excess of 50 nautical miles (90 km) or at night. In Class A airspace, since all Class A operations must be conducted IFR.

  5. 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.

  6. Flight test - Wikipedia

    en.wikipedia.org/wiki/Flight_test

    This allows the required data to be acquired in the minimum number of flight hours. The software used to control the flight test process is known as Flight Test Management Software, and supports the Flight Test Engineer in planning the test points to be flown as well as generating the required documentation. [citation needed]

  7. What Does a Plane Go Through Before It Can Fly? - AOL

    www.aol.com/lifestyle/2010-08-17-what-does-a...

    Boeing Rest easy in your window seat -- your plane has been tested and tested ... and tested Anyone who's sat in a window seat and watched an airplane's wing shake through turbulence like a leaf ...

  8. Disposable masks can take up to 450 years to decompose ... - AOL

    www.aol.com/lifestyle/disposable-masks-450-years...

    That’s three-quarters of 129 billion masks that end up in the trash monthly — or 3.4 billion daily — according to one frequently cited estimate of global mask use, and that’s on top of all ...

  9. US airlines are required to refund you for a canceled flight ...

    www.aol.com/us-airlines-required-refund-canceled...

    Airlines in the United States are now required to give passengers cash refunds if their flight is significantly delayed or canceled, even if that person does not explicitly ask for a refund.