Appendix B - Acronyms and Abbreviations

RPZ—runway protection zone SD-ROB—radar weather report RQRD—required SDS—switched data service RRH—remote reading hygrothermometer SE—southeast RRHS—remote reading hydrometer SEL—single event level RRL—runway remaining lights SELF—simplified short approach lighting system with RRWDS—remote radar weather display sequenced flashing lights RRWSS—RWDS sensor site SFAR-38—Special Federal Aviation Regulation 38 RSA—runway safety area SFL—sequence flashing lights RSAT—runway safety action team SHPO—State Historic Preservation Officer RSR—en route surveillance radar SIC—service initiation charge RSS—remote speaking system SID— standard instrument departure; station identifier RSVN—reservation SIGMET—significant meteorological information RT—right turn; remote transmitter SIMMOD—airport and airspace simulation model RT & BTL—radar tracking and beacon tracking level SIMUL—simultaneous RTAD—remote tower alphanumerics display SIP—state implementation plan RTCA—Radio Technical Commission for Aeronautics SIR—packed or compacted snow and ice on runway(s) RTE—route SKED—scheduled RTP—regional transportation plan SLR—slush on runway(s) RTR—remote transmitter/receiver SM—statute miles RTRD—remote tower radar display SMGC—surface movement guidance and control RTS—return to service SMPS—sector maintenance processor subsystem RUF—rough SMS—safety management system; simulation modeling RVR—runway visual range system RVRM—runway visual range midpoint SN—snow RVRR—runway visual range rollout SNBNK—snowbank(s) caused by plowing RVRT—runway visual range touchdown SNGL—single RW—runway SNR—signal-to-noise ratio, also: S/N RWDS—same as RRWDS SOAR—system of airports reporting RWP—real-time weather processor SOC—service oversight center RWY—runway SOIR—simultaneous operations on intersecting runways SOIWR—simultaneous operations on intersecting wet S runways SPD—speed S—south SRAP—sensor receiver and processor S/S—sector suite SSALF—simplified short approach lighting system with SA—sand, sanded sequenced flashers SAC—Strategic Air Command SSALR—simplified short approach lighting system with SAFI—semi-automatic flight inspection runway alignment indicator lights SALS—short approach lighting system SSALS—simplified short approach lighting system SAT—Saturday SSB—single side band SATCOM—satellite communications SSR—secondary surveillance radar SAWR—Supplementary Aviation Weather Reporting Station STA—straight-in approach SAWRS—Supplementary Aviation Weather Reporting STAR—standard terminal arrival route System STD—standard SB—southbound STMUX—statistical data multiplexer SBGP—state block grant program STOL—short takeoff and landing SCC—System Command Center SUN—Sunday SCVTS—Switched Compressed Video Telecommunications SURPIC—surface picture Service SVC—service SDF—simplified directional facility; simplified direction SVCA—service A finding; software defined network SVCB—service B SDIS—switched digital integrated service SVCC—service C SDP—service delivery point B-10