- Minimum Safe Altitude Warning
Minimum Safe Altitude Warning (MSAW) is an automated warning system for air traffic controllers (ATCO). It is a ground-based safety net intended to warn the controller about increased risk of controlled flight into terrain accidents by generating, in a timely manner, an alert of aircraft proximity to terrain or obstacles.
ICAO Doc 4444 requires that radar systems should provide for the display of safety-related alerts including the presentation of minimum safe altitude warning. It is worth mentioning that ICAO Doc 4444 does not provide a definition of the term MSAW. Instead the term MSAW is ambiguously used in ATC community to identify such warnings as well as for data processing systems providing the alert function.
- ^ "EUROCONTROL Specification for Minimum Safe Altitude Warning". Eurocontrol. 19 May 2009. http://www.eurocontrol.int/safety-nets/gallery/content/public/ec_specs/es_MSAW-09.pdf. Retrieved 2010-05-24.
- ^ Rules of the Air and Air Traffic Services. ICAO. Doc 4444-RAC/501.
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