Training Aviation Glossary
Pilot certificates, ratings, instructor authorizations, methodology, examinations.
Training glossary terms cover the modern pilot training universe — the certificates and ratings (PPL / CPL / ATPL / MPL / LAPL / Instrument / Multi-Engine / Type / Class), the instructor and examiner authorizations (CFI / CFII / TRI / SFI / CRI / IRI / DPE / TRE / FE), the competency-based training methodology (CBTA / EBT / Core Competencies / Observable Behaviours, replacing the legacy KSA model), the multi-crew curriculum (MCC / APS-MCC / CRM / TEM / UPRT), and the logging conventions (PIC / SPIC / PICUS / dual / cross-country / actual vs simulated instrument time) that shape every cadet's career trajectory.
A
Ab Initio
Ab initio is a Latin term meaning 'from the beginning,' used in aviation to describe training programs that take students with no prior flight experience through to a professional pilot qualification.
Adverse Yaw
Adverse yaw is the tendency of an aircraft to yaw away from the direction of a rolling turn — for example, to yaw right as the pilot rolls left. It is caused by the extra induced drag on the raised, more-lifting wing, and the pilot corrects it with coordinated rudder applied in the direction of the roll.
Aeronautical Decision Making (ADM)
Aeronautical Decision Making is the FAA-defined systematic mental process pilots use to consistently determine the best course of action in a given set of circumstances. It is described in FAA Advisory Circular AC 60-22 and the Pilot's Handbook of Aeronautical Knowledge, and demonstrating it is required by the Airman Certification Standards.
Air Masses & Fronts
An air mass is a large body of air with fairly uniform temperature and moisture properties, taking on the character of the surface region where it forms. A front is the transition zone where two dissimilar air masses meet. The four front types — cold, warm, stationary, and occluded — each produce characteristic cloud, precipitation, wind-shift, and hazard patterns a pilot can anticipate.
Air Transport Pilot Certification Training Program (ATP-CTP)
The ATP-CTP is an FAA-mandated ground and simulator training course, required under 14 CFR §61.156 since August 2013, that every ATP-certificate applicant must complete before sitting the ATP Aeronautical Knowledge Test.
Aircraft Electrical System
An aircraft electrical system supplies and distributes electrical power for avionics, lights, and system controls. In a typical light aircraft it comprises a battery, an engine-driven alternator or generator, a voltage regulator, bus bars that distribute power to circuits, an ammeter or loadmeter that monitors charging, and circuit breakers or fuses that protect wiring.
Airline Transport Pilot License (ATPL)
The Airline Transport Pilot License (ATPL), known in the United States as the Airline Transport Pilot Certificate, is the highest level of pilot certification, required to serve as pilot in command of scheduled airline operations.
Airspeed Indicator
The airspeed indicator (ASI) is the pitot-static instrument that displays how fast the aircraft is moving through the air. It measures the difference between ram pressure from the pitot tube and static pressure from the static ports, and its color-coded arcs and lines mark the certificated speed limits — the stall, flap, structural cruise, and never-exceed speeds — for that aircraft.
Angle of Attack (AoA)
Angle of attack is the angle between the wing's chord line and the relative wind — the air the wing is actually moving through. It is the single variable that most directly governs the lift a wing produces, and every aerodynamic stall is an exceedance of the wing's critical angle of attack, regardless of airspeed or attitude.
AOPA Air Safety Institute (ASI)
The AOPA Air Safety Institute (ASI) is the safety-education arm of the AOPA Foundation, operating since 1950. It is one of the world's largest providers of free general-aviation safety education, offering online courses, videos, quizzes, accident case studies, an instructor-refresher course, and an annual accident report used widely across U.S. flight training.
AOPA High School Aviation STEM Curriculum
The AOPA High School Aviation STEM Curriculum is a free four-year secondary-school program, developed by the AOPA Foundation, that teaches science, technology, engineering, and math through aviation. It offers career pathways in piloting and unmanned aircraft systems and is designed to prepare students for aviation knowledge tests and further training.
AOPA You Can Fly Program
You Can Fly is AOPA's umbrella pilot-growth initiative, funded through the AOPA Foundation, that bundles several programs aimed at getting more people into aviation and keeping them flying. Its component efforts cover flight-training support, flying clubs, lapsed-pilot re-engagement, high-school STEM education, and scholarships.
APS-MCC (Airline Pilot Standard Multi-Crew Cooperation)
The Airline Pilot Standard MCC (APS-MCC) is an enhanced EASA multi-crew cooperation course, defined in AMC1 FCL.735.A and the European Aviation Safety Agency's Decision 2015/021/R, that extends the standard 25-hour MCC syllabus with airline-style scenario training, jet-orientation handling, performance training, and competency-based assessment to bring frozen-ATPL graduates to the operational standard expected by airline cadet assessment programmes.
Atmospheric Stability
Atmospheric stability is the tendency of the air to resist or encourage vertical motion. Stable air resists lifting and produces smooth flight, stratiform clouds, poor low-level visibility, and steady precipitation; unstable air encourages lifting and produces turbulence, cumuliform clouds, good visibility, and showery precipitation. Stability is determined by comparing the environmental lapse rate to the adiabatic rate at which a rising parcel cools.
Aviation Learning Management System (LMS)
A Learning Management System (LMS) in aviation is the software platform that delivers and tracks e-learning content — ground-school modules, theoretical knowledge courses, recurrent training videos, and quizzes — for trainees and qualified personnel. An aviation LMS focuses on content delivery and assessment of knowledge, distinct from a Training Management System (TMS) which manages the broader training operation.
Aviation Training Management System (ATMS)
An Aviation Training Management System (ATMS) is an aviation-specific Training Management System — the platform that holds the syllabus, schedules training events, captures grades and competencies, tracks qualifications, and produces authority-ready training records for flight schools, ATOs, airline cadet programmes, and air training centres.
B
Basic Instrument Rating (BIR)
The Basic Instrument Rating (BIR) is a simplified, fully competency-based EASA Part-FCL instrument rating for single-pilot non-high-performance aeroplanes. It was introduced to make instrument flying more accessible to private pilots, has no fixed minimum flight-hour requirement, and is valid only within EASA member states — it is not an ICAO-compliant instrument rating.
Building-Block Method (Blocks of Learning)
The building-block method is the principle in the FAA Aviation Instructor's Handbook (FAA-H-8083-9) that new knowledge and skill are best built on a solid foundation of previously mastered learning. Instruction is sequenced as blocks of learning that, like the stones of a pyramid, each support the next — so a syllabus progresses from simple to complex with earlier skills mastered before later ones depend on them.
C
Carburetor vs. Fuel Injection
Carburetion and fuel injection are the two ways a piston engine meters fuel into its induction air. A carburetor mixes fuel and air in a venturi before the cylinders; fuel injection delivers metered fuel to each intake port, avoiding carburetor icing but adding hot-start and vapor-lock quirks.
Certified Flight Instructor — Instrument (CFII)
A Certified Flight Instructor — Instrument (CFII) is a flight instructor who holds an instrument instructor rating, authorizing them to provide training for the instrument rating and to conduct instrument proficiency checks.
Certified Flight Instructor (CFI)
A Certified Flight Instructor (CFI) is a pilot who holds an FAA Flight Instructor Certificate, authorizing them to provide flight and ground training to student pilots and certificate holders seeking additional ratings.
Checkride
A checkride is the final practical examination conducted by an FAA Designated Pilot Examiner (DPE) or FAA inspector that a student must pass to earn a pilot certificate or rating.
Chief Flight Instructor
The Chief Flight Instructor is the senior, regulator-approved instructor at a flight school responsible for the conduct, quality, and compliance of the training programme.
Class Rating
A class rating is a regulatory authorization permitting a pilot to fly a specific class of aircraft, such as single-engine piston, multi-engine piston, or single-engine seaplane.
Class Rating Instructor (CRI)
A Class Rating Instructor (CRI) holds the instructor authorization under EASA Part-FCL FCL.905.CRI permitting delivery of class rating training on single-engine piston (SEP), multi-engine piston (MEP), single-engine turboprop (SET), and certain complex single-pilot aircraft — the intermediate instructor authorization for class-rated aircraft below the Type Rating Instructor (TRI) complexity threshold.
Commercial Pilot License (CPL)
A Commercial Pilot License (CPL), known in the United States as a Commercial Pilot Certificate, is an advanced pilot credential that authorizes the holder to act as pilot in command for compensation or hire.
Competency-Based Instrument Rating (CB-IR)
The Competency-Based Instrument Rating (CB-IR(A)) is a modular EASA Part-FCL pathway to the aeroplane Instrument Rating that credits a pilot's prior instrument experience to reduce required training. It confers exactly the same privileges as the traditional IR and is assessed by the same skill test, but its flight-training minimum is lower and its theoretical-knowledge syllabus is more flexible.
Competency-Based Training and Assessment (CBTA)
Competency-Based Training and Assessment (CBTA) is the ICAO-endorsed training methodology that defines pilot performance through observable competencies and behaviors rather than fixed hour minimums or task-by-task tick boxes — codified in ICAO Doc 9995 and adopted across IATA's training framework.
Computer-Based Training (CBT) in Aviation
Computer-Based Training (CBT) is self-paced electronic instruction delivered via desktop, web, or mobile interface — used widely in aviation for ground-school theoretical knowledge, recurrent compliance courses, type-rating CBT modules, and crew training. CBT is the content layer that runs inside an aviation Learning Management System (LMS) or Training Management System (TMS).
Constant-Speed Propeller
A constant-speed propeller is a variable-pitch propeller whose blade angle is automatically adjusted by a governor to hold a pilot-selected RPM. It lets the pilot set engine speed and manifold pressure independently, keeping the propeller at an efficient blade angle across climb, cruise, and descent. It is the propeller most often associated with the complex-aircraft endorsement.
Core Competencies (ICAO / IATA / EASA)
Core competencies are the finite set of pilot performance domains — typically nine, defined by ICAO and adopted by IATA and EASA — that together describe what a competent flight crew member does, and against which Competency-Based Training and Assessment is graded.
Crew Resource Management (CRM)
Crew Resource Management (CRM) is the discipline — born from accident analysis in the late 1970s — of using all available resources (information, equipment, and people) to achieve safe and efficient flight, codified into mandatory training under EASA Part-ORO and FAA Advisory Circular 120-51E.
Cross-Country Flight
A cross-country flight is a flight between two points that exceeds a specified distance, typically 50 nautical miles, and is a required component of most pilot training programmes.
Cross-Country Time — FAA and EASA Variations
"Cross-country" flight time is not a single definition in aviation regulations — the FAA uses at least four distinct definitions under 14 CFR §61.1(b)(3) depending on the certificate sought, while EASA Part-FCL FCL.010 applies a single pre-planned-route standard; misapplying the wrong definition to logged hours causes certification failures.
D
Demonstration-Performance Method
The demonstration-performance method is the classic five-phase technique in the FAA Aviation Instructor's Handbook (FAA-H-8083-9) for teaching a physical or mental skill: explanation, demonstration, student performance, instructor supervision, and evaluation. Often called the telling-and-doing technique, it is the default method a flight instructor uses to teach a maneuver.
Designated Pilot Examiner (DPE)
A Designated Pilot Examiner (DPE) is an experienced pilot authorized by the FAA to conduct practical tests (checkrides) and issue pilot certificates and ratings on behalf of the Administrator.
E
EAA Young Eagles
EAA Young Eagles is the Experimental Aircraft Association's free introductory-flight program for youth ages 8 to 17, launched in 1992. Volunteer EAA pilots give young people a first flight at no cost, and the program has flown more than two million participants, making it a major entry point into general aviation.
EASA Assessment of Competence (Instructor Competencies, FCL.920)
The EASA Assessment of Competence is the practical and oral examination an instructor candidate must pass to be issued or revalidate a flight-instructor certificate under Part-FCL. It is built on the instructor competencies defined in FCL.920 — the "teaching and learning" abilities an instructor must demonstrate — and is the EASA counterpart to the FAA's Fundamentals of Instructing and CFI framework.
Electronic Training Records (ETR) / Digital Training Records
Electronic Training Records (ETR) — also called Digital Training Records — are the digital evidence of a trainee's progression through an aviation training programme: lesson completions, instructor grades, competency assessments, ground-school progress, signed endorsements, and skill-test results, captured and stored in a Training Management System rather than on paper.
Evidence-Based Training (EBT)
Evidence-Based Training (EBT) is the recurrent-training methodology defined in ICAO Doc 9995 and EASA AMC1 ORO.FC.231 that replaces fixed maneuver-based recurrent checking with training and assessment built from analysis of actual operational data.
F
FAA WINGS Pilot Proficiency Program
The FAA WINGS Pilot Proficiency Program is a voluntary, FAA-sponsored recurrent training program through which pilots earn Phase credit by completing approved knowledge and flight activities each year.
FITS (FAA/Industry Training Standards)
FITS (FAA/Industry Training Standards) is an FAA-industry program that formalized scenario-based training, learner-centered grading, and single-pilot resource management into a single integrated training strategy. Developed originally for technically advanced aircraft, it reshaped modern general-aviation instruction and helped bridge the move from the Practical Test Standards toward the Airman Certification Standards.
Flight Computer (E6B)
The E6B is a manual flight computer, traditionally a circular slide rule on one face and a wind-triangle slide on the other, used to solve time-speed-distance, fuel, unit-conversion, and wind problems. Electronic versions perform the same functions, and either form is an accepted tool on the FAA knowledge and practical tests.
Flight Examiner (FE / FIE / IRE / CRE / TRE)
Flight Examiners are a family of EASA examiner authorizations under Part-FCL FCL.1000–FCL.1025 — including the Flight Examiner (FE), Flight Instructor Examiner (FIE), Instrument Rating Examiner (IRE), Class Rating Examiner (CRE), and Type Rating Examiner (TRE) — each authorizing the conduct of specific skill tests, proficiency checks, and examiner assessments, with authority granted by and under oversight of the relevant national competent authority.
Flight Instructor Refresher Course (FIRC)
A Flight Instructor Refresher Course (FIRC) is an FAA-approved course a Certificated Flight Instructor uses to satisfy the recent-experience requirement for the flight instructor certificate every 24 calendar months under 14 CFR 61.197. Completing an approved FIRC is one of several ways to keep instructing privileges current.
Frozen ATPL
"Frozen ATPL" is industry shorthand — not a regulatory term in EASA Part-FCL or FAA §61 — for the career stage of a pilot who has passed the full ATPL theoretical knowledge examinations and holds a CPL with Instrument Rating but has not yet accumulated the 1,500 hours of flight time required for ATPL issue under EASA FCL.510(a), with the theoretical knowledge credit remaining valid for 7 years from the last examination passed.
G
Go-Around / Rejected Landing
A go-around, or rejected landing, is the decision and procedure to discontinue an approach or landing and climb away for another attempt. The pilot applies power, pitches for the climb, and reconfigures the airplane in a disciplined sequence — and the option to go around is the safety backstop behind every stabilized-approach standard.
Ground Effect
Ground effect is the change in an aircraft's aerodynamic behavior when it operates within roughly one wingspan of the surface, principally a reduction in induced drag. It lets an aircraft become airborne below normal climb speed on takeoff and produces float on landing, and understanding it is a checkride oral staple.
Ground School
Ground school is the classroom or online theoretical instruction component of pilot training, covering subjects such as aerodynamics, regulations, weather, navigation, and aircraft systems.
Ground-Reference Maneuvers
Ground-reference maneuvers are low-altitude training maneuvers — turns around a point, S-turns across a road, and the rectangular course — flown to a precise ground track while correcting for wind. They teach a pilot to divide attention between flying the airplane and the ground, and to vary bank angle continuously to hold a constant-radius path as the wind changes the aircraft's groundspeed.
Gyroscopic Instruments
Gyroscopic instruments are the attitude indicator, heading indicator, and turn coordinator, all of which use a spinning rotor to sense the aircraft's motion. They rely on two gyroscopic properties — rigidity in space and precession — and are driven by a vacuum system, the electrical system, or an integrated electronic sensor.
H
HFACS (Human Factors Analysis and Classification System)
HFACS is a structured framework, developed by Wiegmann and Shappell, that turns James Reason's Swiss cheese model into a practical classification tool. It sorts the human factors behind an accident or incident into four levels — unsafe acts, preconditions for unsafe acts, unsafe supervision, and organizational influences — so investigators can identify latent organizational causes rather than stopping at pilot error.
High-Performance & Complex Endorsements
These are two separate one-time logbook endorsements under 14 CFR 61.31. A complex endorsement (61.31(e)) is needed for an airplane with retractable landing gear, flaps, and a controllable-pitch propeller; a high-performance endorsement (61.31(f)) is needed for an airplane with an engine of more than 200 horsepower.
Hyperventilation
Hyperventilation is over-breathing — an excessive rate and depth of respiration that flushes too much carbon dioxide from the blood, usually triggered by stress, anxiety, or fear in flight. It produces light-headedness, tingling, and visual disturbance that closely mimic hypoxia, and it is corrected by slowing the breathing rate back to normal.
Hypoxia and Supplemental Oxygen
Hypoxia is a deficiency of oxygen reaching the body's tissues, and especially the brain, that impairs judgment, vision, and coordination in flight. Because its onset is often insidious and euphoric, aviation regulation addresses it directly through supplemental-oxygen rules such as 14 CFR 91.211.
I
ICAO TRAINAIR PLUS Programme
TRAINAIR PLUS is ICAO's global network of recognized aviation training organizations that develop and share Standardized Training Packages (STPs) built to a common competency-based course-development methodology set out in ICAO Doc 9941. Membership signals that a training organization builds courses to an internationally recognized standard and can draw on the network's shared course library.
IMSAFE Checklist
IMSAFE is the FAA's personal pre-flight self-assessment mnemonic a pilot uses to judge fitness to fly: Illness, Medication, Stress, Alcohol, Fatigue, and Emotion. It is the tool behind the Pilot element of the PAVE risk framework and a cornerstone of a school's go/no-go culture.
Instructor-Led Training (ILT) and Virtual Instructor-Led Training (vILT)
Instructor-Led Training (ILT) is synchronous training delivered in person by a qualified instructor — classroom theoretical knowledge instruction, briefing/debriefing, simulator sessions, and flight lessons. Virtual Instructor-Led Training (vILT) is the same model delivered remotely via video conferencing, used increasingly for theoretical knowledge instruction, briefings, and ground-school components that don't require physical co-location.
Instrument Approach
An instrument approach is a prescribed flight manoeuvre that guides a pilot from the en route phase to a point from which a landing can be made, using navigational aids when visual reference to the ground is not available.
Instrument Proficiency Check (IPC)
An Instrument Proficiency Check is the evaluation required under 14 CFR 61.57(d) to regain instrument currency once a pilot has been out of currency for more than six months. It covers the tasks in the Instrument Rating ACS and must be given by a qualified instructor, examiner, or authorized check pilot.
Instrument Rating
An instrument rating is an additional qualification added to a pilot certificate or license that authorizes the holder to fly under Instrument Flight Rules (IFR), navigating solely by reference to cockpit instruments in reduced visibility or cloud conditions.
Instrument Rating Instructor (IRI)
An Instrument Rating Instructor (IRI) holds the instructor authorization under EASA Part-FCL FCL.905.IRI permitting delivery of instrument rating training — including the full IR(A) syllabus under FCL.605 and Competency-Based IR training under FCL.605.A — in both aircraft and approved FSTDs, without requiring the full Flight Instructor (FI) certificate for the corresponding aircraft category.
Integrated vs Modular ATPL Training
The two structurally distinct paths to a frozen ATPL under EASA Part-FCL: the Integrated ATPL(A) program under FCL.510.A and Appendix 3.A — a single ab-initio course from zero flight hours to frozen ATPL at one Approved Training Organization — versus the Modular path under FCL.310, FCL.605, FCL.720.A, and FCL.735.A, which builds the frozen ATPL through sequential standalone courses that may be completed at different ATOs over an extended period.
K
Knowledge Test (Written Exam)
A knowledge test is the written, multiple-choice examination that a pilot applicant must pass before taking the practical test for a certificate or rating.
KSA Grading (Knowledge, Skills, Attitudes)
KSA grading is the legacy training-assessment model that graded pilot performance against three taxonomic categories — Knowledge, Skills, and Attitudes — and which Competency-Based Training and Assessment has progressively replaced with competency- and observable-behavior-based grading.
L
Learner-Centered Grading (Collaborative Assessment)
Learner-Centered Grading, also called collaborative assessment, is an evaluation approach that pairs the learner's own critique of a lesson with a detailed instructor debrief, replacing simple pass/fail maneuver ticks. Its aim is to build the pilot's judgment and self-assessment skills, and it is one of the three tenets of the FAA/Industry Training Standards (FITS).
Left-Turning Tendencies (P-Factor, Torque, Slipstream, Precession)
Left-turning tendencies are the four aerodynamic and mechanical effects that make a single-engine propeller aircraft yaw or roll left at high power and low airspeed: torque reaction, spiraling slipstream, P-factor, and gyroscopic precession. Together they are the reason the pilot must hold right rudder during takeoff and climb.
Light Aircraft Pilot Licence (LAPL)
The Light Aircraft Pilot Licence (LAPL) is an EASA pilot license designed for recreational flying in light aircraft, offering a lower-cost and less complex pathway to piloting than the traditional PPL.
Line Training and Initial Operating Experience (IOE)
Line training and Initial Operating Experience (IOE) — codified in 14 CFR §121.434 and §135.244 (FAA) and EASA Part-ORO.FC.220 — is the structured phase of supervised line operations a newly type-rated pilot completes after type rating issuance and before unrestricted line operations, with a Line Training Captain providing supervision and progressive sign-off.
Load Factor (G-Force)
Load factor is the ratio of the total lift the wings produce to the actual weight of the aircraft, expressed in G. In straight-and-level flight it is 1 G; in any maneuver that requires the wings to support more than the aircraft's weight — a turn, a pull-up, a gust — it rises, increasing structural stress and raising the airspeed at which the wing will stall.
LOFT (Line Oriented Flight Training)
LOFT is a simulator-based training methodology in which a crew flies an uninterrupted, operationally realistic scenario — gate to gate — designed to develop crew coordination, decision-making, and threat management rather than isolated maneuver proficiency.
M
Magnetic Compass Errors
Magnetic compass errors are the predictable ways the wet magnetic compass reads inaccurately. They include the static errors of variation and deviation and the dynamic, dip-driven errors seen in flight: acceleration and deceleration error (ANDS) on east-west headings, turning error (UNOS) near north and south, and oscillation in turbulence.
Magnetic Variation & Deviation
Variation is the angular difference between true north and magnetic north at a given location; deviation is the compass error caused by magnetic influences within the aircraft itself. Pilots apply both, in the TVMDC sequence, to convert a true course measured on a chart into the compass heading actually flown.
MEP (Multi-Engine Piston Class Rating)
The Multi-Engine Piston (MEP) class rating is the EASA Part-FCL class rating, defined under FCL.725 and the class rating structure in Appendix 9 to Part-FCL, that authorises the holder of a Private Pilot Licence (PPL), Commercial Pilot Licence (CPL), or higher to operate single-pilot multi-engine piston aeroplanes — typically light twins in the under-5,700-kg MTOM range — with separate land (MEP(land)) and sea (MEP(sea)) variants.
Multi-Crew Cooperation (MCC)
Multi-Crew Cooperation (MCC) is the EASA-mandated course under Part-FCL FCL.735.A that prepares a single-pilot-trained CPL holder to operate as a flight crew member on a multi-pilot aircraft, focusing on the role split, communication, and CRM behaviors that single-pilot training cannot deliver.
Multi-Engine Instructor (MEI)
A Multi-Engine Instructor (MEI) is a certified flight instructor who holds the additional multi-engine instructor rating, authorizing them to provide flight training in multi-engine aircraft and for the multi-engine class rating.
Multi-Engine Rating
A multi-engine rating is an additional class rating added to a pilot certificate or license that authorizes the holder to act as pilot in command of aircraft with more than one engine.
Multi-Pilot Licence (MPL)
The Multi-Pilot Licence (MPL) is an ab-initio pilot license introduced by ICAO in 2006 (ICAO Doc 9868, PANS-TRG) and codified in EASA regulation under Part-FCL FCL.405.A and FCL.410.A, together with Appendix 5 to Part-FCL, creating a competency-based pathway directly from zero flight hours to type-rated airline first officer on a specific multi-pilot aircraft type.
Multi-Pilot Time
Multi-pilot time is flight time accrued as a required crew member on an aircraft type-certificated for multi-pilot operations. It is a distinct logbook category under EASA Part-FCL FCL.010 and a binding experience component for ATPL(A) issue under FCL.510(a), requiring a minimum 500 hours on multi-pilot aeroplanes.
N
Night Rating
A night rating is an additional qualification under EASA and certain other regulatory frameworks that authorizes a pilot to exercise the privileges of their license during nighttime hours, which is not included in the base PPL or LAPL privileges outside the United States.
Night Vision & Visual Scanning
Night vision is how the eye sees in low light using the rod cells rather than the cones, and it behaves very differently from day vision — slower to adapt, colorless, low-acuity, and blind in the very center of the field. Effective night flying depends on protecting dark adaptation, viewing objects slightly off-center, and using a deliberate scanning technique.
P
PANS-TRG (ICAO Doc 9868, Training)
PANS-TRG is ICAO's Procedures for Air Navigation Services — Training, published as Doc 9868. It sets out how competency-based and evidence-based training and assessment are to be developed and implemented, and it is the source layer beneath the modern FAA and EASA training rules that ATOs work under, including CBTA, EBT, the MPL, and UPRT.
PAVE Checklist (Pilot, Aircraft, enVironment, External pressures)
PAVE is the FAA's preflight risk-assessment framework that sorts hazards into four categories — Pilot, Aircraft, enVironment, and External pressures — so a pilot can identify and mitigate risk before and during a flight. It is one of the core risk-management tools within aeronautical decision making.
PBN Endorsement (Performance-Based Navigation, Part-FCL)
The PBN endorsement is the pilot-side EASA privilege, held on the instrument rating under Part-FCL, confirming a pilot has been trained and assessed to fly Performance-Based Navigation (RNAV/RNP) procedures. Since 2020 it is a required part of every EASA instrument rating.
Pilot in Command Under Supervision (PICUS)
Pilot in Command Under Supervision (PICUS) is the EASA logbook convention — defined in Part-FCL FCL.010 and applied under AMC1 FCL.010 — for flight time during which a fully licensed pilot acts as PIC on a multi-pilot aircraft while a supervising captain carries the formal command authority; up to 500 hours of PICUS time may be credited toward the 1,500-hour PIC requirement for ATPL issue under FCL.510(a)(2).
Pilotage & Dead Reckoning
Pilotage is navigating by direct reference to visible landmarks; dead reckoning is navigating by computed heading, groundspeed, time, and distance corrected for wind. Together they form the foundational visual cross-country navigation skills taught before a student relies on radio aids or GPS.
Pitot-Static System
The pitot-static system is the plumbing that feeds outside air pressure to three primary flight instruments. A forward-facing pitot tube captures ram (dynamic plus static) air for the airspeed indicator, while one or more flush static ports sense ambient (static) pressure for the altimeter, the vertical speed indicator, and the airspeed indicator.
Practical Test (Checkride)
A practical test is the regulator-mandated flight examination that an applicant must pass to be issued a pilot certificate, rating, or instructor authorization — known colloquially in the United States as a "checkride."
Private Pilot License (PPL)
A Private Pilot License (PPL), known in the United States as a Private Pilot Certificate, is the foundational pilot credential that allows an individual to act as pilot in command of an aircraft for personal, non-commercial purposes.
Proficiency Check (LPC / IPC)
A proficiency check is a recurring practical evaluation of a pilot's skills required to revalidate or renew specific ratings, such as the Instrument Rating, Type Rating, or Class Rating.
R
Rating Revalidation vs Renewal (EASA FCL.740)
Under EASA Part-FCL FCL.740, revalidation means keeping a class or type rating alive before it expires — by proficiency check or, for certain ratings, by experience. Renewal is what you must do after a rating has already lapsed: refresher training determined by an ATO or DTO plus a proficiency check. The distinction turns on whether the rating is still valid on the day you act.
Reciprocating (Piston) Engine
A reciprocating engine, or piston engine, converts the pressure of burning a fuel-air mixture into rotary motion that turns the propeller. Almost every primary trainer uses one, running the four-stroke Otto cycle of intake, compression, power, and exhaust.
Region of Reversed Command (Backside of the Power Curve)
The region of reversed command is the low-speed flight regime in which flying slower actually requires more power, because induced drag dominates. It lies below the minimum-drag airspeed, and pilots also call it the backside of the power curve or 'behind the power curve.'
Restricted ATP Certificate (R-ATP)
The Restricted Airline Transport Pilot Certificate (R-ATP), established under 14 CFR §61.160, allows qualifying pilots to act as second-in-command on Part 121 air carrier operations at reduced total flight hour minimums — as low as 750 hours for military pilots and 1,000 hours for graduates of approved four-year aviation degree programs.
Rusty Pilots (Return-to-Flying)
Rusty Pilots is an AOPA program designed to bring lapsed or inactive certificated pilots back to flying. Offered as an in-person seminar, a live webinar, or a self-paced online course, it refreshes regulations, weather, airspace, and technology, and completion earns a logbook endorsement that satisfies the ground portion of a flight review.
S
Scenario-Based Training (SBT)
Scenario-Based Training (SBT) is a training method that builds learning around structured, real-world flight situations rather than isolated maneuvers. Grounded in the theory of situated cognition, it is one of the three tenets of the FAA/Industry Training Standards (FITS) and is designed to develop the decision-making a pilot actually uses in flight.
Sectional Chart (VFR Navigation Chart)
A sectional chart is the FAA's 1:500,000-scale visual aeronautical chart used for VFR navigation, depicting airspace, terrain and elevation, airports, navaids, obstacles, and radio frequencies. Sectionals are revised on a 56-day cycle, and the equivalent across ICAO and EASA states is the 1:500,000 ICAO VFR chart.
Short-Field & Soft-Field Technique
Short-field and soft-field techniques are the maximum-performance takeoff and landing procedures used when runway length or surface condition demands them. The short-field procedure squeezes the most out of a limited distance over an obstacle; the soft-field procedure keeps weight off the wheels on grass, mud, or snow. Both are required tasks on the FAA private and commercial practical tests.
Simulated Instrument Time
Simulated instrument time is flight time during which the pilot is solely controlling the aircraft by reference to instruments, with outside visual reference blocked by a view-limiting device — historically called "hood time."
Single-Engine Piston (SEP) Class Rating
The Single-Engine Piston (SEP) class rating is the most common EASA Part-FCL aeroplane class rating, covering single-engine piston landplanes. It is valid for two years and can be revalidated either by a proficiency check or, uniquely among the common ratings, by experience — flying a defined amount in the year before expiry plus a short training flight with an instructor.
Single-Pilot Resource Management (SRM)
Single-Pilot Resource Management (SRM) is the discipline of managing every resource available to a lone pilot — on-board equipment, outside services, and the pilot's own attention — so that the safe outcome of a flight is never in doubt. It adapts Crew Resource Management to the solo cockpit and is one of the three tenets of the FAA/Industry Training Standards (FITS).
Skill Test
A skill test is the EASA practical examination conducted by an authorized examiner to assess a pilot candidate's competency for the initial issue of a license, rating, or certificate, serving as the European equivalent of the FAA checkride.
Slips (Forward Slip & Sideslip)
A slip is a cross-controlled maneuver in which aileron and rudder are deflected in opposite directions so the airplane flies partly sideways to the relative wind. A forward slip increases drag to lose altitude without gaining airspeed; a sideslip aligns the fuselage with the runway during a crosswind landing while holding the upwind wing down to stop drift.
Slow Flight (Maneuvering at Minimum Controllable Airspeed)
Slow flight is controlled flight at a low airspeed and high angle of attack where the flight controls feel mushy, induced drag dominates, and the airplane operates on the back side of the power curve. Under the current FAA Airman Certification Standards it is flown just above the stall-warning threshold — fast enough that the horn or buffet does not activate.
Solo Flight
A solo flight is a flight in which the student pilot is the sole occupant of the aircraft, having been endorsed by their instructor to fly without supervision.
Spatial Disorientation
Spatial disorientation is a pilot's inability to correctly perceive the aircraft's attitude, altitude, or motion relative to the earth, particularly when outside visual reference is lost. It arises when the body's balance and motion senses feed the brain misleading information, and it is a leading killer in general-aviation accidents involving loss of control.
Sport Pilot Certificate
The Sport Pilot Certificate, codified under 14 CFR Part 61 Subpart J (§§61.303–61.327) and established by the FAA's 2004 Light-Sport Aircraft Rule, allows pilots to fly Light-Sport Aircraft (LSA) without an FAA medical certificate, requiring a minimum of 20 flight hours and a U.S. driver's license as medical evidence.
Stage Check
A stage check is a formal evaluation conducted by a designated check instructor at prescribed points in a training syllabus to verify that a student has mastered the skills and knowledge required before advancing to the next phase.
Stall Awareness, Recovery, and Spin Training
Stall and spin training is the structured curriculum element — required under 14 CFR §61.107(b) / §61.127(b) for PPL/CPL stall awareness and §61.183(i) for FAA flight instructor spin training, and under EASA Part-FCL FCL.135.A for ATPL/MPL basic UPRT — that develops a pilot's recognition, prevention, and recovery from aerodynamic stall and aggravated-stall spin departure.
Startle and Surprise Effect
Startle is the involuntary physical reflex triggered by a sudden, intense stimulus; surprise is the cognitive disruption caused by an event that violates the pilot's expectations. Together they degrade performance in the first seconds of an abnormal situation and are a recognized contributor to loss-of-control accidents.
Steep Turns
A steep turn is a performance maneuver — a 360-degree (or 720-degree) coordinated turn at a steep bank angle — that demonstrates a pilot's ability to manage the increased load factor and stall speed of a banked turn while holding altitude, airspeed, and coordination. The FAA private pilot standard is a 45-degree bank; the commercial standard is 50 degrees.
Student Pilot in Command (SPIC)
Student Pilot in Command (SPIC) is the EASA logging convention — defined under Part-FCL FCL.010 and applied through Part-FCL Subpart B and Subpart C — for flight time during which a student pilot acts as Pilot in Command on a flight that includes an instructor on board, with the instructor exercising supervision but not exercising command authority.
Student Progress Tracking
Student progress tracking is the systematic monitoring of a trainee's advancement through a flight training syllabus — lesson completion, dual and solo hours, maneuver grades, knowledge-test and stage-check results, endorsements, and readiness milestones. It gives instructors and management a continuous, evidence-based picture of where every student stands.
Swiss Cheese Model (Reason's Accident Causation)
The Swiss Cheese Model, developed by psychologist James Reason, depicts an organization's defenses against accidents as successive layers, each with holes. An accident happens only when the holes in every layer momentarily line up, letting a hazard pass through all defenses. It is the theoretical basis of modern safety management systems.
Synthetic Flight Instructor (SFI)
A Synthetic Flight Instructor (SFI) holds the instructor authorization under EASA Part-FCL FCL.905.SFI permitting delivery of type rating training and instrument rating training exclusively in qualifying Flight Simulation Training Devices (FFS, FTD, FNPT II) — without being required to hold the corresponding aircraft type rating or class rating for actual flight instruction.
T
Tailwheel Endorsement
A tailwheel endorsement is the one-time logbook sign-off required under 14 CFR 61.31(i) before a pilot may act as pilot in command of a tailwheel — conventional-gear — airplane. It certifies that an instructor has trained the pilot in tailwheel takeoffs, landings, and go-arounds and found them proficient.
Temperature, Dew Point & Lapse Rate
The dew point is the temperature to which air must be cooled to become saturated. The temperature/dew-point spread indicates how close the air is to forming cloud or fog — a small spread means saturation is near. The lapse rate is the rate at which temperature changes with altitude, and comparing the standard, dry adiabatic, and moist adiabatic rates explains where clouds form and whether the air is stable.
The Dirty Dozen (Maintenance Human Factors)
The Dirty Dozen is a list of the twelve most common human-error preconditions in aviation maintenance and operations — factors such as complacency, fatigue, and pressure that repeatedly precede mistakes. Each item is paired with practical countermeasures, or "safety nets," and the list is a foundation of maintenance human-factors and SMS training worldwide.
The Laws of Learning (FOI)
The Laws of Learning are the six principles the FAA Aviation Instructor's Handbook (FAA-H-8083-9) uses to describe how people acquire and retain knowledge and skill: Readiness, Exercise, Effect, Primacy, Intensity, and Recency — remembered by the mnemonic REEPIR. Every flight and ground instructor is expected to design lessons that work with these principles rather than against them.
The Levels of Learning
The Levels of Learning are the four ascending cognitive levels the FAA Aviation Instructor's Handbook (FAA-H-8083-9) uses to describe the depth at which something has been learned: Rote, Understanding, Application, and Correlation. Correlation — the ability to associate and apply knowledge to new situations — is stated as the goal of aviation instruction.
The Teaching Process (Four Steps)
The Teaching Process is the four-step framework in the FAA Aviation Instructor's Handbook (FAA-H-8083-9) for delivering any lesson: Preparation, Presentation, Application, and Review & Evaluation (assessment). Every well-built ground or flight lesson falls logically into these four steps, and they form the backbone of sound lesson-plan design.
Threat and Error Management (TEM)
Threat and Error Management (TEM) is the safety-management framework — developed from Line Operations Safety Audit data at the University of Texas Human Factors Research Project — that describes how flight crews identify threats, prevent or trap errors, and manage undesired aircraft states in normal line operations.
Thunderstorm Life Cycle
Every thunderstorm cell passes through three stages — cumulus (building), mature, and dissipating. It requires three ingredients: sufficient moisture, an unstable atmosphere, and a lifting mechanism. The mature stage is the most dangerous, containing the full set of hazards — severe turbulence, hail, lightning, strong updrafts and downdrafts, microbursts, and a gust front — which is why pilots avoid thunderstorms by a wide margin.
Training Management System (TMS) in Aviation
A Training Management System (TMS) is the software that runs the training operation at a flight school, ATO, airline cadet program, or air training centre — holding the syllabus, scheduling lessons and instructors, capturing competencies and grades, and producing audit-ready training records for FAA, EASA, UK CAA, CASA, and other authorities.
Type Rating
A type rating is an authorization added to a pilot certificate or license that qualifies the holder to act as pilot in command of a specific type of complex, high-performance, or large aircraft that requires specialized training beyond a standard class rating.
Type Rating Examiner (TRE)
A Type Rating Examiner (TRE) holds the examiner authorization under EASA Part-FCL FCL.1005.TRE permitting conduct of type rating skill tests, Licence Proficiency Checks (LPCs), and Operator Proficiency Checks (OPCs) on specific multi-pilot or complex single-pilot aircraft types — the highest type-specific examining authority in the EASA system below the competent authority itself.
Type Rating Instructor (TRI)
A Type Rating Instructor (TRI) holds the instructor authorization under EASA Part-FCL FCL.905.TRI that permits delivery of type rating training on a specific aircraft type — either multi-pilot aeroplanes (TRI(MPA)) or single-pilot complex aircraft (TRI(SPA)) — and is the most senior instructor credential in the EASA licence system below examiner.