minimum safe altitude warning


Also found in: Acronyms.

minimum safe altitude warning (MSAW)

A function of the ARTS (automated radar terminal system) III computer that aids the controller by alerting him or her when a tracked mode C-equipped aircraft is below, or is predicted to go below, a predetermined safe altitude. See also automated radar terminal system.
References in periodicals archive ?
The asterisk indicates that the Minimum Safe Altitude Warning system is turned off for that aircraft, so he can fly as low as he wants without triggering MSAW altitude alarms.

Full browser ?