English for Aviation Safety Procedures
Expert-defined terms from the Specialist Certification in Teaching English for Aviation Purposes course at London School of Business and Administration. Free to read, free to share, paired with a globally recognised certification pathway.
AAL, Above Aerodrome Level, refers to the height of an aircraft above the aerodr… #
Related terms include AGL, Above Ground Level, and MSL, Mean Sea Level. The concept of AAL is crucial in aviation safety procedures as it helps pilots to understand their position in relation to the aerodrome and make informed decisions about their flight path.
ACAS, Airborne Collision Avoidance System, is a system that uses transponders… #
Related terms include TCAS, Traffic Collision Avoidance System, and ASDE, Airport Surface Detection Equipment. ACAS is an essential tool in preventing mid-air collisions and is a critical component of aviation safety procedures.
ACF, Aerodrome Chart, is a graphical representation of an aerodrome, including i… #
Related terms include AIP, Aeronautical Information Publication, and NOTAM, Notice to Airmen. The ACF is a vital resource for pilots, providing them with essential information about the aerodrome and its surroundings.
AD, Aerodrome, refers to a defined area on land or water, including any building… #
Related terms include ADT, Aerodrome Traffic, and AGL, Above Ground Level. The concept of an AD is central to aviation safety procedures, as it provides a controlled environment for aircraft operations.
ADEP, Aerodrome Emergency Plan, is a document that outlines the procedures to be… #
Related terms include AEP, Aerodrome Emergency Procedures, and ERP, Emergency Response Plan. The ADEP is a critical component of aviation safety procedures, providing a framework for responding to emergencies and minimizing the risk of injury or damage.
ADIZ, Air Defense Identification Zone, is a designated area of airspace where ai… #
Related terms include ATC, Air Traffic Control, and IFR, Instrument Flight Rules. The concept of an ADIZ is essential to national security and aviation safety procedures, as it allows for the identification and tracking of aircraft in sensitive airspace.
AERAD, Aerodrome, refers to a defined area on land or water, including any build… #
The concept of an AERAD is central to aviation safety procedures, as it provides a controlled environment for aircraft operations.
AFC, Automatic Flight Control, refers to a system that uses computers and… #
Related terms include AFCS, Automatic Flight Control System, and AP, Autopilot. AFC is a critical component of modern aircraft, allowing for increased efficiency and reduced pilot workload.
AFIS, Aerodrome Flight Information Service, provides pilots with essential infor… #
Related terms include ATC, Air Traffic Control, and FSS, Flight Service Station. The concept of AFIS is essential to aviation safety procedures, as it provides pilots with critical information about the aerodrome and its surroundings.
AGL, Above Ground Level, refers to the height of an aircraft above the ground le… #
Related terms include AAL, Above Aerodrome Level, and MSL, Mean Sea Level. The concept of AGL is crucial in aviation safety procedures as it helps pilots to understand their position in relation to the terrain and make informed decisions about their flight path.
AHRS, Attitude and Heading Reference System, is a system that provides pilots wi… #
Related terms include ADC, Air Data Computer, and AH, Attitude Indicator. The concept of AHRS is essential to aviation safety procedures, as it provides pilots with critical information about the aircraft's position and orientation.
AIDC, Automatic Identification and Data Capture, refers to the use of technol… #
Related terms include ADS-B, Automatic Dependent Surveillance-Broadcast, and MLAT, Multilateration. AIDC is a critical component of modern air traffic control systems, allowing for increased efficiency and reduced pilot workload.
AIP, Aeronautical Information Publication, is a document that provides pilots wi… #
Related terms include ACF, Aerodrome Chart, and NOTAM, Notice to Airmen. The concept of AIP is essential to aviation safety procedures, as it provides pilots with critical information about the aerodrome and its surroundings.
AIS, Aeronautical Information Service, provides pilots with essential informatio… #
The concept of AIS is essential to aviation safety procedures, as it provides pilots with critical information about the aerodrome and its surroundings.
ALSF, Approach Lighting System with Flashers, is a system that provides pilots w… #
Related terms include ALS, Approach Lighting System, and PAPI, Precision Approach Path Indicator. The concept of ALSF is essential to aviation safety procedures, as it provides pilots with critical information about the runway and its surroundings.
ALT, Altitude, refers to the height of an aircraft above a reference level, such… #
The concept of ALT is crucial in aviation safety procedures as it helps pilots to understand their position in relation to the terrain and make informed decisions about their flight path.
AMSL, Above Mean Sea Level, refers to the height of an aircraft above the mean s… #
The concept of AMSL is essential to aviation safety procedures, as it provides pilots with critical information about their altitude and position in relation to the terrain.
AOCC, Area Operations Control Center, is a facility that coordinates and control… #
Related terms include ATC, Air Traffic Control, and ACC, Area Control Center. The concept of AOCC is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
AP, Autopilot, refers to a system that uses computers and algorithms</… #
Related terms include AFCS, Automatic Flight Control System, and APD, Autopilot Disconnect. The concept of AP is essential to modern aircraft, allowing for increased efficiency and reduced pilot workload.
APCH, Approach, refers to the phase of flight where an aircraft approaches the r… #
Related terms include APP, Approach Procedure, and IFR, Instrument Flight Rules. The concept of APCH is essential to aviation safety procedures, as it requires pilots to follow specific procedures and guidelines to ensure safe landing.
API, Application Programming Interface, refers to a set of protocols and… #
Related terms include AIDC, Automatic Identification and Data Capture, and SWIM, System Wide Information Management. The concept of API is essential to modern air traffic control systems, allowing for increased efficiency and reduced pilot workload.
APOA, Airport Obstacle Assessment, is a process that evaluates the hazards</i… #
Related terms include APO, Airport Obstacle, and OCA, Obstacle Clearance Altitude. The concept of APOA is essential to aviation safety procedures, as it helps to identify and mitigate hazards to aircraft operations.
APP, Approach Procedure, refers to a set of procedures and guidelines<… #
Related terms include APCH, Approach, and IFR, Instrument Flight Rules. The concept of APP is essential to aviation safety procedures, as it requires pilots to follow specific procedures and guidelines to ensure safe landing.
APU, Auxiliary Power Unit, refers to a self #
contained power source that provides electricity and hydraulic power to an aircraft, used for starting engines and powering systems. Related terms include GPU, Ground Power Unit, and PPU, Portable Power Unit. The concept of APU is essential to modern aircraft, allowing for increased efficiency and reduced pilot workload.
ARC, Area of Responsibility, refers to the geographical area for which an air tr… #
The concept of ARC is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
ARFF, Aircraft Rescue and Fire Fighting, refers to the emergency services provid… #
Related terms include AEP, Aerodrome Emergency Plan, and ERP, Emergency Response Plan. The concept of ARFF is essential to aviation safety procedures, as it provides a critical response to emergencies and minimizes the risk of injury or damage.
ASAS, Airborne Separation Assurance System, is a system that uses transponder… #
Related terms include ACAS, Airborne Collision Avoidance System, and TCAS, Traffic Collision Avoidance System. The concept of ASAS is essential to aviation safety procedures, as it provides pilots with critical information to prevent collisions.
ASDE, Airport Surface Detection Equipment, is a system that uses radar an… #
Related terms include ASR, Airport Surveillance Radar, and MSSR, Monopulse Secondary Surveillance Radar. The concept of ASDE is essential to aviation safety procedures, as it provides air traffic controllers with critical information about aircraft and vehicle movements on the airport surface.
ASR, Airport Surveillance Radar, is a system that uses radar to detect an… #
Related terms include ASDE, Airport Surface Detection Equipment, and MSSR, Monopulse Secondary Surveillance Radar. The concept of ASR is essential to aviation safety procedures, as it provides air traffic controllers with critical information to manage air traffic.
ATC, Air Traffic Control, refers to the service provided by air traffic controll… #
Related terms include ACC, Area Control Center, and APP, Approach Procedure. The concept of ATC is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
ATIS, Automatic Terminal Information Service, provides pilots with essential inf… #
Related terms include ASOS, Automated Surface Observing System, and AWOS, Automated Weather Observing System. The concept of ATIS is essential to aviation safety procedures, as it provides pilots with critical information about the airport and its surroundings.
ATS, Air Traffic Service, refers to the services provided by air traffic control… #
The concept of ATS is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
AWOS, Automated Weather Observing System, provides pilots with essential informa… #
Related terms include ASOS, Automated Surface Observing System, and ATIS, Automatic Terminal Information Service. The concept of AWOS is essential to aviation safety procedures, as it provides pilots with critical information about the weather and its impact on flight operations.
AZM, Azimuth, refers to the direction of an aircraft or a radio signal, m… #
Related terms include HDG, Heading, and TRK, Track. The concept of AZM is essential to aviation safety procedures, as it helps pilots to understand their position and orientation in relation to the terrain and other aircraft.
BADA, Base of Aircraft Data, refers to a database that contains information abou… #
Related terms include PANS-OPS, Procedures for Air Navigation Services - Operations, and ICAO, International Civil Aviation Organization. The concept of BADA is essential to aviation safety procedures, as it provides air traffic controllers with critical information about aircraft performance and capabilities.
BARO, Barometric, refers to the use of barometers to measure atmospheric… #
Related terms include QNH, Barometric Pressure, and QFE, Barometric Pressure at Aerodrome Elevation. The concept of BARO is essential to aviation safety procedures, as it provides pilots with critical information about the weather and its impact on flight operations.
BCF, Braking Coefficient, refers to the measure of an aircraft's braking perform… #
Related terms include BFL, Braking Force Limit, and TFL, Thrust Force Limit. The concept of BCF is essential to aviation safety procedures, as it helps pilots to understand the aircraft's braking capabilities and limitations.
CA, Controlled Airspace, refers to the airspace where air traffic control servic… #
Related terms include UA, Uncontrolled Airspace, and RA, Restricted Airspace. The concept of CA is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
CAS, Calibrated Airspeed, refers to the indicated airspeed of an aircraft, corre… #
Related terms include IAS, Indicated Airspeed, and TAS, True Airspeed. The concept of CAS is essential to aviation safety procedures, as it provides pilots with critical information about the aircraft's airspeed and performance.
CAT, Clear Air Turbulence, refers to the turbulence that occurs in clear air, wi… #
Related terms include CAT II, Clear Air Turbulence Type II, and CAT III, Clear Air Turbulence Type III. The concept of CAT is essential to aviation safety procedures, as it requires pilots to be aware of the potential for turbulence and take necessary precautions to ensure safe flight operations.
CDI, Course Deviation Indicator, refers to an instrument that indicates the d… #
Related terms include VOR, VHF Omnidirectional Range, and NDB, Non-Directional Beacon. The concept of CDI is essential to aviation safety procedures, as it provides pilots with critical information about their position and orientation in relation to the terrain and other aircraft.
CFIT, Controlled Flight Into Terrain, refers to the accident that occurs when an… #
Related terms include GPWS, Ground Proximity Warning System, and TAWS, Terrain Awareness and Warning System. The concept of CFIT is essential to aviation safety procedures, as it highlights the importance of accurate navigation and situational awareness.
CRZ, Cruise, refers to the phase of flight where an aircraft is flying at a stea… #
Related terms include CLB, Climb, and DES, Descent. The concept of CRZ is essential to aviation safety procedures, as it requires pilots to monitor the aircraft's performance and make adjustments as necessary to ensure safe flight operations.
CTA, Control Area, refers to the airspace where air traffic control services are… #
Related terms include CTR, Control Zone, and TMA, Terminal Control Area. The concept of CTA is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
CTR, Control Zone, refers to the airspace surrounding an airport, where air traf… #
Related terms include CTA, Control Area, and TMA, Terminal Control Area. The concept of CTR is essential to aviation safety procedures, as it provides a centralized control system for managing air traffic.
DA, Decision Altitude, refers to the altitude at which a pilot must decide to ei… #
Related terms include DH, Decision Height, and MDA, Minimum Descent Altitude. The concept of DA is essential to aviation safety procedures, as it requires pilots to make critical decisions about the safety of the approach.
DAP, Decision Altitude Point, refers to the point at which a pilot must decide t… #
Related terms include DA, Decision Altitude, and DH, Decision Height. The concept of DAP is essential to aviation safety procedures, as it requires pilots to make critical decisions about the safety of the approach.
DBS, Distance #
Based Separation, refers to the separation of aircraft based on their distance from each other, often using radar or ADS-B systems to measure the distance. Related terms include MSS, Minimum Separation Standard, and TBS, Time-Based Separation. The concept of DBS is essential to aviation safety procedures, as it provides a critical method for separating aircraft and preventing collisions.
DES, Descent, refers to the phase of flight where an aircraft is descending to a… #
Related terms include CLB, Climb, and CRZ, Cruise. The concept of DES is essential to aviation safety procedures, as it requires pilots to monitor the aircraft's performance and make adjustments as necessary to ensure safe flight operations.
DF, Direction Finding, refers to the process of determining the direction of a <… #
Related terms include NDB, Non-Directional Beacon, and VOR, VHF Omnidirectional Range. The concept of DF is essential to aviation safety procedures, as it provides pilots with critical information about their position and orientation in relation to the terrain and other aircraft.
DH, Decision Height, refers to the height at which a pilot must decide to either… #
Related terms include DA, Decision Altitude, and MDA, Minimum Descent Altitude. The concept of DH is essential to aviation safety procedures, as it requires pilots to make critical decisions about the safety of the approach.
DME, Distance Measuring Equipment, refers to the equipment used to measure the d… #
The concept of DME is essential to aviation safety procedures, as it provides pilots with critical information about their position and orientation in relation to the terrain and other aircraft.
DOC, Document, refers to a written or electronic record of information, often us… #
The concept of DOC is essential to aviation safety procedures, as it provides a critical record of information about aircraft operations and safety procedures.
EAT, Expected Approach Time, refers to the expected time of arrival at the airpo… #
Related terms include ETA, Estimated Time of Arrival, and ETD, Estimated Time of Departure. The concept of EAT is essential to aviation safety procedures, as it provides a critical method for planning and coordinating air traffic operations.
ECAM, Electronic Centralized Aircraft Monitor, refers to a system that displays… #
Related terms include EICAS, Engine Indicating and Crew Alerting System, and ECIS, Electronic Centralized Information System. The concept of ECAM is essential to aviation safety procedures, as it provides pilots with critical information about the aircraft's systems and performance.
EDTO, Engine Data Trend Monitoring, refers to the process of monitoring and anal… #
Related terms include EDP, Engine Data Processing, and ETM, Engine Trend Monitoring. The concept of EDTO is essential to aviation safety procedures, as it provides a critical method for monitoring and optimizing engine performance.
EFB, Electronic Flight Bag, refers to a portable electronic device that contains… #
Related terms include EFB-CC, Electronic Flight Bag - Crew Component, and EFB-FO, Electronic Flight Bag - Flight Operations. The concept of EFB is essential to aviation safety procedures, as it provides pilots with critical information and support for flight operations.
EGPWS, Enhanced Ground Proximity Warning System, refers to a system that provide… #
The concept of EGPWS is essential to aviation safety procedures, as it provides a critical method for preventing controlled flight into terrain.
EHS, Engine Health System, refers to a system that monitors and analyzes engine… #
The concept of EHS is essential to aviation safety procedures, as it provides a critical method for monitoring and optimizing engine performance.
ELT, Emergency Locator Transmitter, refers to a device that transmits a distr… #
Related terms include EPIRB, Emergency Position-Indicating Radio Beacon, and PLB, Personal Locator Beacon. The concept of ELT is essential to aviation safety procedures, as it provides a critical method for locating and rescuing aircraft in distress.
EMAS, Engineered Materials Arresting System, refers to a system that is designed… #
Related terms include EMAS-1, Engineered Materials Arresting System - Type 1, and EMAS-2, Engineered Materials Arresting System - Type 2. The concept of EMAS is essential to aviation safety procedures, as it provides a critical method for preventing accidents and reducing damage.
ENR, En Route, refers to the phase of flight where an aircraft is flying between… #
Related terms include ENR-1, En Route - Type 1, and ENR-2, En Route - Type 2. The concept of ENR is essential to aviation safety procedures, as it provides a critical method for describing and managing the route of flight.
EOBT, Estimated Off #
Block Time, refers to the estimated time at which an aircraft will depart from the gate, often used to plan and coordinate air traffic operations. Related terms include ETD, Estimated Time of Departure, and EOBT-1, Estimated Off-Block Time - Type 1. The concept of EOBT is essential to aviation safety procedures, as it provides a critical method for planning and coordinating air traffic operations.
EOD, Engine Oil Dilution, refers to the process of diluting engine oil wi… #
Related terms include EOD-1, Engine Oil Dilution - Type 1, and EOD-2, Engine Oil Dilution - Type 2. The concept of EOD is essential to aviation safety procedures, as it provides a critical method for reducing engine wear and improving engine performance.
EP, Emergency Procedure, refers to a procedure that is followed in the ev… #
Related terms include EP-1, Emergency Procedure - Type 1, and EP-2, Emergency Procedure - Type 2. The concept of EP is essential to aviation safety procedures, as it provides a critical method for responding to and mitigating the effects of an emergency.
ETD, Estimated Time of Departure, refers to the estimated time at which an aircr… #
Related terms include EAT, Expected Approach Time, and EOBT, Estimated Off-Block Time. The concept of ETD is essential to aviation safety procedures, as it provides a critical method for planning and coordinating air traffic operations.
ETM, Engine Trend Monitoring, refers to the process of monitoring and analyzing… #
Related terms include EDP, Engine Data Processing, and EDTO, Engine Data Trend Monitoring. The concept of ETM is essential to aviation safety procedures, as it provides a critical method for monitoring and optimizing engine performance.
EUROCAE, European Organization for Civil Aviation Equipment, refers to an organi… #
Related terms include EUROCAE-1, European Organization for Civil Aviation Equipment - Type 1, and EUROCAE-2, European Organization for Civil Aviation Equipment - Type 2. The concept of EUROCAE is essential to aviation safety procedures, as it provides a critical method for improving safety and efficiency in aviation operations.
FIR, Flight Information Region, refers to a region of airspace where flight info… #
Related terms include FIR-1, Flight Information Region - Type 1, and FIR-2, Flight Information Region - Type 2. The concept of FIR is essential to aviation safety procedures, as it provides a critical method for coordinating and managing air traffic operations.
FL, Flight Level, refers to the altitude of an aircraft, expressed in hun… #
Related terms include FL-1, Flight Level - Type 1, and FL-2, Flight Level - Type 2. The concept of FL is essential to aviation safety procedures, as it provides a critical method for describing the altitude of an aircraft.
FOD, Foreign Object Damage, refers to the damage caused to an aircraft by for… #
Related terms include FOD-1, Foreign Object Damage - Type 1, and FOD-2, Foreign Object Damage - Type 2. The concept of FOD is essential to aviation safety procedures, as it provides a critical method for describing the damage caused to an aircraft by foreign objects.
FPL, Flight Plan, refers to a document that outlines the route and pro… #
Related terms include FPL-1, Flight Plan - Type 1, and FPL-2, Flight Plan - Type 2. The concept of FPL is essential to aviation safety procedures, as it provides a critical method for coordinating and managing air traffic operations.
FPV, First Person View, refers to a system that provides a virtual view o… #
Related terms include FPV-1, First Person View - Type 1, and FPV-2, First Person View - Type 2. The concept of FPV is essential to aviation safety procedures, as it provides a critical method for improving safety and efficiency in aviation operations.
FSS, Flight Service Station, refers to a facility that provides communication… #
Related terms include FSS-1, Flight Service Station - Type 1, and FSS-2, Flight Service Station - Type 2. The concept of FSS is essential to aviation safety procedures, as it provides a critical method for coordinating and managing air traffic operations.
FTD, Flight Training Device, refers to a simulator or other device used to tr… #
Related terms include FTD-1, Flight Training Device - Type 1, and FTD-2, Flight Training Device - Type 2. The concept of FTD is essential to aviation safety procedures, as it provides a critical method for improving safety and efficiency in aviation operations.
GCA, Ground #
Controlled Approach, refers to a system that provides guidance to aircraft during approach and landing, often used to improve safety and efficiency in aviation operations. Related terms include GCA-1, Ground-Controlled Approach - Type 1, and GCA-2, Ground-Controlled Approach - Type 2. The concept of GCA is essential to aviation safety procedures, as it provides a critical method for improving safety and efficiency in aviation operations.
GDP, Gross Domestic Product, refers to the total value of goods and se… #
Related terms include GDP-1, Gross Domestic Product - Type 1, and GDP-2, Gross Domestic Product - Type 2. The concept of GDP is essential to aviation safety procedures, as it provides a critical method for measuring the economic performance of a country.
GND, Ground, refers to the surface of the Earth, often used to describ… #
Related terms include GND-1, Ground - Type 1, and GND-2, Ground - Type 2. The concept of GND is essential to aviation safety procedures, as it provides a critical method for describing the location of an aircraft or other object in relation to the ground.
GPWS, Ground Proximity Warning System, refers to a system that provides warni… #
Related terms include GPWS-1, Ground Proximity Warning System - Type 1, and GPWS-2, Ground Proximity Warning System - Type 2. The concept of GPWS is essential to aviation safety procedures, as it provides a critical method for preventing controlled flight into terrain.
GRS, Glide Slope, refers to the path that an aircraft follows during appr… #
Related terms include GRS-1, Glide Slope - Type 1, and GRS-2, Glide Slope - Type 2. The concept of GRS is essential to aviation safety procedures, as it provides a critical method for describing the descent of an aircraft to the runway.