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VFR flight is not allowed in airspace known as class A, regardless of the meteorological conditions except after failure of two way radio communications [5] or during declared emergencies such as VFR traffic attempting to avoid severe weather formations.
If the radio failure occurs in visual flight rules (VFR) conditions in an area where radio communication is required, the pilot is expected to continue under VFR and land when feasible. If flying under instrument flight rules (IFR) conditions, and VFR conditions exist or are encountered after the failure, the flight should be continued in VFR ...
A pilot may be requested to squawk a given code by an air traffic controller, via the radio, using a phrase such as "Cessna 123AB, squawk 0363". The pilot then selects the 0363 code on their transponder and the track on the air traffic controller's radar screen will become correctly associated with their identity.
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 ...
To see the differences in the coding systems, consider a VFR aircraft with a VHF communication radio, VOR receiver with glideslope for ILS approaches, ADF, a GPS and a pressure altitude reporting transponder. It would be coded as SG/C on an ICAO form and as /G on the FAA domestic form.
Aircraft must establish two-way radio communication with ATC and obtain a clearance to enter Class B airspace. All aircraft operating inside or within 30 NM of the primary Class B airport(s) are required to have a transponder with Mode C. The 30 NM Mode C Veil is denoted on VFR charts by a thin magenta line.
Although dangerous and illegal, a certain amount of VFR flying is conducted in IMC. A scenario is a VFR pilot taking off in VMC conditions, but encountering deteriorating visibility while en route. Continued VFR flight into IMC can lead to spatial disorientation of the pilot which is the cause of a significant number of general aviation crashes ...
While flying VFR-on-top, pilots are required to stay in an appropriate VFR altitude, maintain the required VFR visibility and cloud clearance requirement, while comply with other IFR requirements (minimum IFR altitudes, position reporting, radio communications, course to be flown, adherence to ATC clearance, etc). [2] [3]