AC 150/5220-16C, AUTOMATED WEATHER OBSERVING SYSTEMS (AW0S) FOR NON-FEDERAL APPLICATIONS

AC NO: 150/5220-16C, AUTOMATED WEATHER OBSERVING SYSTEMS (AW0S) FOR NON-FEDERAL APPLICATIONS. This advisory circular (AC) contains the Federal Aviation Administration's (FAA) standard for non-Federal AWOS's. An AWOS is a computerized system that automatically measures one or more weather parameters, analyzes the data, prepares a weather observation that consists of the parameter(s) measured, and broadcasts the observation to the pilot using an integral very high frequency (VHF) radio or an existing navigational aid (NAVAID) which may provide long-line dissemination of the observations.