Precision approach radar

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A/N GPN-22

Precision approach radar (PAR) is a type of radar guidance system designed to provide lateral and vertical guidance to an aircraft pilot for landing, until the missed approach point is reached. Controllers monitoring the PAR displays observe each aircraft's position and issue instructions to the pilot that keep the aircraft on course during final approach. It is similar to an instrument landing system (ILS) but requires control instructions. One type of instrument approach that can make use of PAR is the ground-controlled approach (GCA).

An Air Force air traffic controller is reflected in the precision approach radar scope as he directs an aircraft.

Precision Approach Radars are most frequently used at military air traffic control facilities. Many of these facilities use the FPN-63 or the MPN-14K Precision Approach Radar. This Radar can provide precision guidance to a distance of 20 miles in normal mode and 15 miles in MTI mode. The OJ-333 Radar scope is the indicator which the air traffic controller uses to provide instructions to the pilots.

[edit] See also

• Instrument approach
• Ground-controlled approach

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