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  2. Boeing X-53 Active Aeroelastic Wing - Wikipedia

    en.wikipedia.org/wiki/Boeing_X-53_Active_Aero...

    The designation "X-52" was skipped in sequence to avoid confusion with Boeing's B-52 Stratofortress bomber. [ 2 ] The pre-production version of the F/A-18 was an ideal aircraft for proving AAW technology, a relatively high wing aspect ratio for a fighter, with adequate strength, but no additional stiffness needed to be added to change its ...

  3. List of buildings with 100 floors or more - Wikipedia

    en.wikipedia.org/wiki/List_of_buildings_with_100...

    This is a list of buildings with 100 floors or more above ground.Dubai and Chicago have three buildings with at least 100 floors. All of the buildings on this list are over 1,000 ft (305 meter) "supertalls" and are among the world's tallest buildings.

  4. Height above ground level - Wikipedia

    en.wikipedia.org/wiki/Height_above_ground_level

    In aviation, atmospheric sciences and broadcasting, a height above ground level (AGL [1] or HAGL) is a height measured with respect to the underlying ground surface.This is as opposed to height above mean sea level (AMSL or HAMSL), height above ellipsoid (HAE, as reported by a GPS receiver), or height above average terrain (AAT or HAAT, in broadcast engineering).

  5. Latest radar evidence suggests Black Hawk in DC disaster was ...

    www.aol.com/latest-radar-evidence-suggests-black...

    Newly released data from ground-based radar came out Tuesday suggesting an Army helicopter was higher than it was supposed to be when it collided with American Airlines Flight 5342 a week ago ...

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

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

    Above aerodrome elevation [1] In aviation, above aerodrome level (AAL), or above aerodrome elevation (AAE), denotes that an altitude is given above the nearest aerodrome or airport. AAIB Air Accidents Investigation Branch: United Kingdom AAIM Aircraft Autonomous Integrity Monitoring AAO Assumed adverse obstacle AAS Airport advisory service [1] AC

  7. VFR over-the-top - Wikipedia

    en.wikipedia.org/wiki/VFR_Over-The-Top

    The flight visibility at the cruising altitude of the aircraft must be at least 5 miles and the weather at the destination aerodrome must be forecast to have a sky condition of scattered cloud or better, a ground visibility of 5 miles or greater with no forecast of precipitation, fog, thunderstorm or blowing snow, and that these conditions must ...