時(shí)間：2011-09-15 17:20來源：藍(lán)天飛行翻譯 作者：航空 點(diǎn)擊：次
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SOP standard operating procedure specific range measure of an aircraft's fuel efficiency, expressed as nautical miles flown per pound of fuel burned (nm/lb) SPL Student Pilot's Licence. No longer issued in the UK, where a CAA medical certificate serves as an SPL. squawk to transmit an assigned code via a transponder (see SSR below). SR sunrise SRG Safety Regulation Group of the CAA SRZ Special Rules Zone. An area of protected airspace surrounding an airfield and extending from the surface upwards to a specific level which affords safety to air traffic movements in the vicinity of airfields whose traffic level does not warrant the establishment of a Control Zone. Also SRA, Special Rules Area. extending vertically and horizontally from a level above the surface, but not necessarily terminating at the same upper level as the SRZ. SRA Surveillance Radar Approach. Also Special Rules Area. SRE Surveillance Radar Element of a GCA. SS sunset SSB single sideband. Reduction of bandwith by transmitting only one sideband and suppressing the other, and usually also the carrier wave. SSR secondary surveillance radar. A radar system comprising a ground-based transmitter/receiver which interrogates a compatible unit in the aircraft (see transponder), providing instant radar identification without having to manoeuvre. Assigned four-digit transponder codes are referred to as squawk codes. STAR Standard Terminal Arrival Route, for inbound IFR traffic. STC Supplemental Type Certificate. U.S. system for post-type certification approval of aircraft modifications such as re- engining, STOL kits, etc, where the full certification process is not deemed necessary. Also used by manufacturers to certify (often greatly changed) new models of old types under so-called 'grandfather rights'. STOH since top overhaul STOL short take-off and landing. Also VTOL, V/STOL |
