MLS - microwave landing system. A microwave-based instrument approach system intended to replace ILS in the 1990s and claimed to offer a number of advantages such as the ability to fly segmented and curved precision approaches.
MLS.
Microwave Landing System
Mode.
A selection of one of several alternatives, such as guidance mode (VOR, TACAN, or Waypoint), or navigation mode (INS, Doppler, or dead reckoning) ...
MLS CATEGORIES-
a. MLS Category I. An MLS approach procedure which provides for an approach to a height above touchdown of not less than 200 feet and a runway visual range of not less than 1,800 feet.
d. MLS Area Navigation (MLS/RNAV), which provides area navigation with reference to an MLS ground facility.
LORAN Long RANge Navigation -- a navigation system, originally for marine use, which utilizes timing differences between multiple low-frequency transmissions to provide accurate latitude/longitude position information, at best to within 50 feet MLS ...
Microwave landing system (MLS)
Midair Collision MAC - Near Midair Collisions NMAC - Top 7 Reasons why midair collisions occur
Military Operations Area (MOA)
Minimum Approach Break-off Height - MABH
Minimum descent altitude (MDA) ...
MLS - Microwave Landing System
PAR - Precision Approach Radar (Military)
GPS (with vertical navigation via WAAS or EGNOS) - Global Positioning System
LAAS - Ground Based Augmentation System (GBAS) for Global Satellite Navigation Systems (GNSS) ...
Electronic components emitting signals which provide vertical reference to airborne instruments during instrument approaches such as ILS/MLS, or ...
With respect to the operation of aircraft, means the height or altitude at which a decision must be made during an ILS, MLS, or PAR instrument approach to either continue the approach or to execute a missed approach.
Each procedure is designated for use with a specific type of electronic navigation system including NDB, TACAN, VOR, ILS/MLS, and RNAV. These charts are identified by the type of navigational aid(s) that provide final approach guidance.
 See also: Navigation, Aircraft, ILS, Flight, Altitude
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