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In this example, the transponder code selected is 1200 for VFR flight (in North American airspace). The green IDENT button is marked "ID". The green IDENT button is marked "ID". A transponder (short for trans mitter-res ponder [ 1 ] and sometimes abbreviated to XPDR, [ 2 ] XPNDR, [ 3 ] TPDR [ 4 ] or TP [ 5 ] ) is an electronic device that ...
VFR requires a pilot to be able to see outside the cockpit to control the aircraft's altitude, navigate, and avoid obstacles and other aircraft. [3] Governing agencies establish specific requirements for VFR flight, including minimum visibility, and distance from clouds, to ensure that aircraft operating under VFR are visible from enough distance to ensure safety.
Visual flight rules (VFR) flight standard squawk code used in North American airspace when no other has been assigned or is applicable. [7] [3] 1201 US: Assigned via FAR 93.95 for use by VFR aircraft in the immediate vicinity of LAX. [3] US (Visual flight rules (VFR) glider operations for gliders not in contact with ATC, through February 2012 ...
VFR pilots may use cockpit instruments as secondary aids to navigation and orientation, but are not required to; the view outside of the aircraft is the primary source for keeping the aircraft straight and level (orientation), flying to the intended destination , and avoiding obstacles and hazards (separation).
When the transponder receives an interrogation request, it broadcasts the configured transponder code (or "squawk code"). This is referred to as "Mode 3A" or more commonly, Mode A. A separate type of response called "Ident" can be initiated from the airplane by pressing a button on the transponder control panel.
It usually happens when the aircraft is inside controlled airspace, and the local weather is less than the minimums required for flight under visual flight rules (VFR) within the airspace in question. [5] Note that an aircraft might be able to fly under SVFR even in Class A airspace, where instrument flight rules (IFR) flight is the norm. [6]
Transponder pulse-code reporting Mode B Transponder code and altitude reporting Mode C Transponder code, altitude, and TCAS reporting MOE maintenance organisation exposition MOPS Minimum Operational Performance Standard MORA Minimum Off Route Altitude MOSArt Modular Open System Architecture MP manifold pressure: MPL multi-crew pilot license: MPU
For example, if a desired route requires GPS, then the pilot should file /G, even if the aircraft also qualifies for other suffixes (this may be moot due to new RNAV routing requirements to use the ICAO form & codes). Pilots are recommended to file the maximum capability of their aircraft in the equipment suffix.