Can planes fly without radar?

Yes & no. An aircraft will always be detectable by radar of some type & at some range. There is also the possibility that certain radars cannot detect the presence of certain aircraft types, in certain orientations, at certain distances & the aircraft will fly by undetected.



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As soon as it drops off the radar, the first thing the air traffic controller will do is contact the next radar facility on the plane's flight path, and then others in the area, to see if they can detect it.

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Slowest aircraft The MacCready Gossamer Condor is a human-powered aircraft capable of flight as slow as 8 miles per hour (13 km/h). Its successor, the MacCready Gossamer Albatross can fly as slow as 9.23 miles per hour (14.85 km/h).

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Yes, weather radar can help predict convective turbulence and clear air turbulence. Most commercial aircraft now pack weather radar – from the Airbus A321 to the Boeing 777.

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Aircraft must fly over residential areas because of the small distances between some airports and neighborhoods. Therefore, it is sometimes necessary for aircraft to fly over these residential areas in order for aircraft to safely reach the airports.

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LOW FLYING AIRCRAFT CANNOT BE DETECTED BY STANDARD RADAR BECAUSE OF INTERFERENCE FROM CLUTTER. LOW FLYING AIRCRAFT CANNOT BE DETECTED BY STANDARD RADAR BECAUSE OF INTERFERENCE FROM CLUTTER.

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It's widely known that RADAR systems are not able to detect stationary objects, only moving ones. Actually, they are are to detect them but just not where they come from, so a barrier in the middle of the road and a traffic sign on the side of the street, they would look like the same to the RADAR system.

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Severe turbulence can cause a plane to drop so suddenly that pilots temporarily lose control. But, again, that's not enough to crash the plane. That's not to say it's never happened. In 1966, human error and turbulence combined to bring a plane down over Mount Fuji.

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Usually the pilots will leave the autopilot engaged. In small airplanes with limited autopilots, it is better to fly manually, but with more sophisticated airplanes the autopilot is a valid option in turbulence. Severe turbulence is actually very rare.

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Routes with the most turbulence
  • New York to London. One of the most popular routes which experience turbulence is flying from New York to London (and also London to New York). ...
  • Seoul to Dallas. ...
  • Flying into certain airports near the equator. ...
  • Flying into Reno, Nevada. ...
  • London to South Africa.


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No person may operate an aircraft at an indicated airspeed of more than 200 knots (230 mph) at or below 2,500 feet above the surface, within 4 nautical miles of the primary Class C or Class D airport.

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Technically this is the so-called 'stall speed', where air passes over the wings fast enough to sustain altitude, and for small planes this can be less than 50km/h (31mph).

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When VC-25A or the currently under development VC-25B are in the air but not carrying the president, air traffic controllers may refer to them by their tail numbers, Special Air Missions (SAM) 28000 and 29000, or by a call sign of their choosing.

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Military aircraft in particular are exempt from many civil rules and regulations which would see most aircraft having an active transponder and of course their operational requirements will dictate they often do. That said, ultimately, any plane CAN disable it if they wish.

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The most well know of these is the code 7700. This is used to indicate an emergency of any kind. A pilot will enter this when in an emergency situation - either instructed by ATC after declaring an emergency or without communication if there is no time.

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Can a pilot switch off radar? Air traffic controllers may then request pilots to turn the transponders off or to standby. Also, if the transponder is sending faulty information, the pilot might want to turn it off. Planes are still visible on primary radar until they get below the radar's coverage ability.

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