spaschal on DSK3GDR082PROD with CFR Federal Aviation Administration, DOT Section 1.2 POC means portable oxygen concentrator. PTRS means Performance Tracking and Reporting System. RAIL means runway alignment indicator light system. RBN means radio beacon. RCLM means runway centerline marking. RCLS means runway centerline light system. REIL means runway end identification lights. RFFS means rescue and firefighting services. RNAV means area navigation. RR means low or medium frequency radio range station. RVR means runway visual range as measured in the touchdown zone area. SALS means short approach light system. SATCOM means satellite communications. SSALS means simplified short approach light system. SSALSR means simplified short approach light system with runway alignment indicator lights. TACAN means ultra-high frequency tactical air navigational aid. TAS means true airspeed. TCAS means a traffic alert and collision avoidance system. TDZL means touchdown zone lights. TSO means technical standard order. TVOR means very high frequency terminal omnirange station. VA means design maneuvering speed. VB means design speed for maximum gust intensity. VC means design cruising speed. VD means design diving speed. VDF/MDF means demonstrated flight diving speed. VEF means the speed at which the critical engine is assumed to fail during takeoff. VF means design flap speed. VFC/MFC means maximum speed for stability characteristics. VFE means maximum flap extended speed. VFTO means final takeoff speed. VH means maximum speed in level flight with maximum continuous power. VLE means maximum landing gear extended speed. FTD means flight training device. GS means glide slope. HIRL means high-intensity runway light system. IAS means indicated airspeed. ICAO means International Civil Aviation Organization. IFR means instrument flight rules. IFSD means in-flight shutdown. ILS means instrument landing system. IM means ILS inner marker. INT means intersection. LDA means localizer-type directional aid. LFR means low-frequency radio range. LMM means compass locator at middle marker. LOC means ILS localizer. LOM means compass locator at outer marker. M means mach number. MAA means maximum authorized IFR altitude. MALS means medium intensity approach light system. MALSR means medium intensity approach light system with runway alignment indicator lights. MCA means minimum crossing altitude. MDA means minimum descent altitude. MEA means minimum en route IFR altitude. MEL means minimum equipment list. MM means ILS middle marker. MOCA means minimum obstruction clearance altitude. MRA means minimum reception altitude. MSL means mean sea level. NDB (ADF) means nondirectional beacon (automatic direction finder). NM means nautical mile. NOPAC means North Pacific area of operation. NOPT means no procedure turn required. OEI means one engine inoperative. OM means ILS outer marker. OPSPECS means operations specifications. PACOTS means Pacific Organized Track System. PAR means precision approach radar. PMA means parts manufacturer approval. 19 VerDate Sep<11>2014 12:50 Apr 30, 2019 Jkt 247046 PO 00000 Frm 00029 Fmt 8010 Sfmt 8010 Y:\SGML\247046.XXX 247046