a precision landing
1Precision 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… …
2precision approach procedure — A standard instrument approach procedure utilizing azimuth and glide path information provided by an ILS (instrument landing system), an MLS (microwave landing system), or a PAR (precision approach radar) …
3Landing footprint — After Atmospheric reentry, a non powered spacecraft will land on an area depending upon entry angle, entry mass, atmosphere and drag. It is therefore impossible to know the spacecraft s landing point with absolute precision. By simulating varying …
4Precision Approach Path Indicator — The Precision Approach Path Indicator (PAPI) is a light system positioned beside the runway that consists of two, three, or four boxes of lights that provide a visual indication of an aircraft s (fixed wing or rotor wing) position on the… …
5precision instrument runway — A runway having an operative nonvisual precision approach aid (i.e., instrument landing system) specially marked with nonprecision instrument runway indications along with a touchdown zone, fixed distance markers, and side strips. The normal… …
6precision approach — An approach in which range, azimuth, and glide slope information are provided to the pilot. This information may be provided by a pilot interpreted aid, such as ILS (instrument landing system), or given by a ground controller, as in a GCA (ground …
7Microwave landing system — The NASA 737 research aircraft on the Wallops runway in 1987 with the Microwave Landing System equipment in the foreground. A microwave landing system (MLS) is an all weather, precision landing system originally intended to replace or supplement… …
8Transponder Landing System — The Transponder Landing System (TLS) is an all weather, precision landing system that uses existing airborne transponder and ILS equipment to create a precision approach at a location where an ILS would normally not be… …
9Instrument landing system — The Instrument Landing System (ILS) is a ground based instrument approach system that provides precision guidance to an aircraft approaching a runway, using a combination of radio signals and, in many cases, high intensity lighting arrays to… …
10Joint Precision Approach and Landing System — The Joint Precision Approach and Landing System (JPALS) is a military, all weather landing system based on real time differential correction of the GPS signal, augmented with a local area correction message, and transmitted to the user via secure …
