Defines: a) the typical application for a permanently installed sound monitor around an airport; b) performance specifications for instruments, requirements for installing and operating unattended instruments so as to determine continuously monitored sound pressure levels of aircraft sound at selected locations; c) requirements for monitoring the sound of aircraft operations from an airport; d) requirements for the quantities to be determined to describe the sound of aircraft operations; e) requirements for data to be reported and how often the reports should be published; f) a procedure to determine the expanded uncertainty of the reported data in accordance with the Guide to the expression of uncertainty in measurements.