The following abbreviations are used throughout My CFI Book without being spelled out.
AC: Advisory Circular
ACS: Airman Certification Standards
ADI: Attitude Direction Indicator
ADIZ: Air Defense Identification Zone
ADS-B: Automatic Dependent Surveillance-Broadcast
AFM: Airplane Flight Manual
AGL: Above Ground Level
AIM: Aeronautical Information Manual
AMEL: Airplane Multi-Engine Land
AMES: Airplane Multi-Engine Sea
AOA: Angle of Attack
ASEL: Airplane Single-Engine Land
ASES: Airplane Single-Engine Sea
ASI: Airspeed Indicator or Aviation Safety Inspector
ASOS: Automated Surface Observing System
ATC: Air Traffic Control
ATIS: Automatic Terminal Information Service
ATP: Airline Transport Pilot
AWOS: Automated Weather Observing System
CAS: Calibrated Airspeed
CDI: Course Deviation Indicator
CFI: Certificated Flight Instructor
CFII: Certificated Flight Instructor-Instrument
CFIT: Controlled Flight Into Terrain
CFR: Code of Federal Regulations
CG: Center of Gravity
CRM: Crew Resource Management
DA: Decision Altitude
DH: Decision Height
DME: Distance Measuring Equipment
DP: Departure Procedure
DPE: Designated Pilot Examiner
EAS: Equivalent Airspeed
EFB: Electronic Flight Bag
EGT: Exhaust Gas Temperature
ELT: Emergency Locator Transmitter
ETA: Estimated Time of Arrival
ETE: Estimated Time En Route
FAA: Federal Aviation Administration
FBO: Fixed Base Operator
FOI: Fundamentals of Instruction
FMS: Flight Management System
FPM: Feet Per Minute
FPNM: Feet Per Nautical Mile
FSDO: Flight Standards District Office
FSIMS: Flight Standards Information Management System
FSS: Flight Service Station
GA: General Aviation
GBAS: Ground-Based Augmentation System
GS: Ground Speed or Glide Slope
GP: Glide Path
GPS: Global Positioning System
HAT: Height Above Touchdown
HSI: Horizontal Situation Indicator
IAS: Indicated Airspeed
IACRA: Integrated Airman Certification and/or Rating Application
ICAO: International Civil Aviation Organization
InFO: Information for Operators
IFR: Instrument Flight Rules
ILS: Instrument Landing System
IMC: Instrument Meteorological Conditions
IPC: Instrument Proficiency Check
KCAS: Knots Calibrated Airspeed
KTAS: Knots True Airspeed
KIAS: Knots Indicated Airspeed
LAHSO: Land and Hold Short Operations
LNAV: Lateral Navigation
LDA: Localizer Type Directional Aid
LOC: Localizer
LOC-I: Loss of Control – Inflight
LP: Localizer Performance
LPV: Localizer Performance with Vertical Guidance
LSA: Light-Sport Aircraft
MDA: Minimum Descent Altitude
MEA: Minimum En Route Altitude
MEI: Multi-Engine Instructor
METAR: Meteorological Terminal Aviation Routine (Weather Report)
MSA: Minimum Safe Altitude
MSL: Mean Sea Level
NAVAID: Navigational Aid
NDB: Nondirectional Radio Beacon
NM: Nautical Mile
NOTAM: Notice to Air Missions
NTSB: National Transportation Safety Board
OROCA: Off-Route Obstruction Clearance Altitude
PAPI: Precision Approach Path Indicator
PHAK: Pilot’s Handbook of Aeronautical Knowledge
PIC: Pilot in Command
PIREP: Pilot Weather Report
POH: Pilot’s Operating Handbook
PTS: Practical Test Standards
RAIM: Receiver Autonomous Integrity Monitoring
RNAV: Area Navigation
RNP: Required Navigation Performance
RPM: Revolutions Per Minute
RVR: Runway Visual Range
SAIB: Special Airworthiness Information Bulletins
SAFO: Safety Alerts for Operators
SBAS: Satellite-Based Augmentation System
SID: Standard Instrument Departure
SM: Statute Mile
SMS: Safety Management System
SOP: Standard Operating Procedure
SPRM: Single Pilot Resource Management
STAR: Standard Terminal Arrival Route
SUA: Special Use Airspace
TAF: Terminal Area Forecast
TAS: True Airspeed
TCO: Training Course Outline
TDZE: Touchdown Zone Elevation
TERPS: U.S. Standard for Terminal Instrument Procedures
UTC: Universal Coordinated Time
VASI: Visual Approach Slope Indicator
VDP: Visual Descent Point
VFR: Visual Flight Rules
VNAV: Vertical Navigation
VMC: Visual Meteorological Conditions
VOR: Very High-Frequency Omni-Directional Range
VSI: Vertical Speed Indicator
WAAS: Wide Area Augmentation System