Volume: 1Date: 2024-01-01Original Date: 2024-01-01Title: Section 1.2 - Abbreviations and symbols.Context:
Title 14 - Aeronautics and Space. CHAPTER I - FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION. SUBCHAPTER A - DEFINITIONS AND GENERAL REQUIREMENTS. PART 1 - DEFINITIONS AND ABBREVIATIONS.
§ 1.2Abbreviations and symbols.In Subchapters A through K of this chapter:AFM
means airplane flight manual.
AGL
means above ground level.
ALS
means approach light system.
APU
means auxiliary power unit.
ASR
means airport surveillance radar.
ATC
means air traffic control.
ATS
means Air Traffic Service.
CAMP
means continuous airworthiness maintenance program.
CAS
means calibrated airspeed.
CAT II
means Category II.
CMP
means configuration, maintenance, and procedures.
DH
means decision height.
DME
means distance measuring equipment compatible with TACAN.
EAS
means equivalent airspeed.
EFVS
means enhanced flight vision system.
Equi-Time Point
means a point on the route of flight where the flight time, considering wind, to each of two selected airports is equal.
ETOPS
means extended operations.
EWIS
, as defined by § 25.1701 of this chapter, means electrical wiring interconnection system.
FAA
means Federal Aviation Administration.
FFS
means full flight simulator.
FM
means fan marker.
Code of Federal Regulations /
Title 14 - Aeronautics and Space /
Vol. 1 / 2024-01-0119
FSTD
means flight simulation training device.
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.
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.
Code of Federal Regulations /
Title 14 - Aeronautics and Space /
Vol. 1 / 2024-01-0120
VH
means maximum speed in level flight with maximum continuous power.
VLE
means maximum landing gear extended speed.
VLO
means maximum landing gear operating speed.
VLOF
means lift-off speed.
VMC
means minimum control speed with the critical engine inoperative.
VMO
/
MMO
means maximum operating limit speed.
VMU
means minimum unstick speed.
VNE
means never-exceed speed.
VNO
means maximum structural cruising speed.
VR
means rotation speed.
VREF
means reference landing speed.
VS
means the stalling speed or the minimum steady flight speed at which the airplane is controllable.
VS0
means the stalling speed or the minimum steady flight speed in the landing configuration.
VS1
means the stalling speed or the minimum steady flight speed obtained in a specific configuration.
VSR
means reference stall speed.
VSRO
means reference stall speed in the landing configuration.
VSR1
means reference stall speed in a specific configuration.
VSW
means speed at which onset of natural or artificial stall warning occurs.
V
TOSS
means takeoff safety speed for Category A rotorcraft.
VX
means speed for best angle of climb.
VY
means speed for best rate of climb.
V1
means 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. V
1
also means the minimum speed in the takeoff, following a failure of the critical engine at V
EF
, at which the pilot can continue the takeoff and achieve the required height above the takeoff surface within the takeoff distance.
V2
means takeoff safety speed.
V2min
means minimum takeoff safety speed.
VFR
means visual flight rules.
VGSI
means visual glide slope indicator.
VHF
means very high frequency.
VOR
means very high frequency omnirange station.
VORTAC
means collocated VOR and TACAN.
[Doc. No. 1150, 27 FR 4590, May 15, 1962]
Editorial Note:
For
Federal Register
citations affecting § 1.2, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at
www.govinfo.gov.