Sec. 1.2 Abbreviations and symbols.

	AGL above ground level. ALS approach light system. ASR airport surveillance radar. ATC air traffic control. CAS calibrated airspeed. CAT II Category II. CONSOL or CONSOLAN a kind of low or medium frequency long range navigational aid. DH decision height. DME distance measuring equipment compatible with TACAN. EAS equivalent airspeed. FAA Federal Aviation Administration. FM fan marker. GS glide slope. HIRL high-intensity runway light system. IAS indicated airspeed. ICAO International Civil Aviation Organization. IFR instrument flight rules. ILS instrument landing system. IM ILS inner marker. INT intersection. LDA localizer-type directional aid. LFR low-frequency radio range. LMM compass locator at middle marker. LOC ILS localizer. LOM compass locator at outer marker. M mach number. MAA maximum authorized IFR altitude. MALS medium intensity approach light system. MALSR medium intensity approach light system with runway alignment indicator lights. MCA minimum crossing altitude. MDA minimum descent altitude. MEA minimum en route IFR altitude. MM ILS middle marker. MOCA minimum obstruction clearance altitude. MRA minimum reception altitude. MSL mean sea level. NDB(ADF) nondirectional beacon (automatic direction finder). NOPT no procedure turn required. OEI one engine inoperative. OM ILS outer marker. PAR precision approach radar. RAIL runway alignment indicator light system. RBN radio beacon. RCLM runway centerline marking. RCLS runway centerline light system. REIL runway end identification lights. RR low or medium frequency radio range station. RVR runway visual range as measured in the touchdown zone area. SALS short approach light system. SSALS simplified short approach light system. SSALSR simplified short approach light system with runway alignment indicator lights. TACAN ultra-high frequency tactical air navigational aid. TAS true airspeed. TCAS a traffic alert and collision avoidance system. TDZL touchdown zone lights. TVOR very high frequency terminal omnirange station.
	VA design maneuvering speed. VB design speed for maximum gust intensity.
	VC design cruising speed. VD design diving speed.
	VDF/MDF demonstrated flight diving speed. VEF the speed at which the critical engine is assumed to fail during takeoff.
	VF design flap speed.
	VFC/MFC maximum speed for stability characteristics.
	VFE maximum flap extended speed.
	VH maximum speed in level flight with maximum continuous power.
	VLE maximum landing gear extended speed.
	VLO maximum landing gear operating speed.
	VLOF lift-off speed. VMC minimum control speed with the critical engine inoperative.
	VMO/MMO maximum operating limit speed.
	VMU minimum unstick speed.
	VNE never-exceed speed.
	VNO maximum structural cruising speed.
	VR rotation speed.
	VS the stalling speed or the minimum steady flight speed at which the airplane is controllable.
	VS0 the stalling speed or the minimum steady flight speed in the landing configuration.
	VS1 the stalling speed or the minimum steady flight speed obtained in a specific configuration.
	VTOSS takeoff safety speed for Category A rotorcraft.
	VX speed for best angle of climb.
	VY speed for best rate of climb.
	V1 the maximum speed in the takeoff at which the pilot must take the first action (e.g., apply brakes, reduce thrust, deploy speed brakes) to stop the airplane within the accelerate-stop distance. V1 also the minimum speed in the takeoff, following a failure of the critical engine at VEF, at which the pilot can continue the takeoff and achieve the required height above the takeoff surface within the takeoff distance.
	V2 takeoff safety speed.
	V2 min minimum takeoff safety speed.
	VFR visual flight rules.
	VHF very high frequency.
	VOR very high frequency omnirange station.
	VORTAC collocated VOR and TACAN.