PPL Stage
Terms relevant to PPL training and PPL holders — primary licence privileges, currency rules, and recreational flying concepts.
Operational(28)
Altimeter & Altimetry Settings
The pressure altimeter is an aneroid-barometer instrument that displays altitude by sensing the drop in atmospheric pressure with height. Altimetry settings — QNH, QNE, and QFE, entered in the Kollsman window — tell the instrument what reference to measure from, so the same aircraft can read height above sea level, above the standard datum, or above a field.
ATC (Air Traffic Control)
Air Traffic Control (ATC) is the ground-based service provided by qualified controllers to direct aircraft on the ground and through controlled airspace for the primary purposes of preventing collisions, organising and expediting the flow of air traffic, and providing advisory information and assistance, governed internationally by ICAO Annex 11 (Air Traffic Services) and ICAO Doc 4444 (PANS-ATM), and in the United States by FAA Order JO 7110.65 (Air Traffic Control) and 14 CFR Part 65 (controller certification).
Aviation Fuel Grades (AvGas & Jet-A)
Aviation fuels fall into two families: aviation gasoline (AvGas) for piston engines and kerosene-based jet fuel for turbines. AvGas grades are dyed by color — 100LL is blue — while Jet-A is clear to straw. Putting the wrong fuel in an aircraft, or misfueling, can be catastrophic.
Carbon Monoxide Poisoning
Carbon monoxide (CO) poisoning occurs when exhaust gas leaks into the cabin — most often through a cracked exhaust or heater muff when cabin heat is on — and CO binds to the blood far more readily than oxygen. Because CO is colorless and odorless, pilots rely on detectors and symptom awareness, and the response is to shut off cabin heat, get fresh air, use oxygen if available, and land.
Fog Types
Fog is a cloud at or near the surface that reduces visibility to less than one kilometer (below about five-eighths of a statute mile in US reporting). It forms either by cooling air to its dew point or by adding moisture to it. The principal aviation types — radiation, advection, upslope, steam, and precipitation-induced fog — differ in how they form and dissipate, which drives the dispatch and go/no-go decision.
Glass Cockpit (PFD/MFD)
A glass cockpit replaces the analog instrument panel with electronic displays — a primary flight display (PFD) and one or more multi-function displays (MFD). Solid-state sensors, an attitude and heading reference system (AHRS) and an air data computer (ADC), feed a single integrated picture of attitude, altitude, airspeed, heading, and navigation.
Icing Conditions and Anti/De-Icing
Icing conditions exist when visible moisture is present and the temperature at the aircraft is at or below freezing, allowing ice to accumulate on the airframe or in the induction system. Structural ice degrades lift, adds weight and drag, and can disrupt control, while induction ice starves the engine. Most training aircraft are not certified for flight into known icing and must avoid it.
Instrument Flight Rules (IFR)
Instrument Flight Rules (IFR) are the regulations under which a pilot operates an aircraft solely by reference to instruments, with separation from other traffic and terrain provided by air traffic control rather than by visual reference.
LAHSO (Land and Hold Short Operations)
LAHSO are air traffic control operations in which a landing aircraft is instructed to land and stop before an intersecting runway, taxiway, or other designated point. Acceptance is at the pilot's discretion based on the available landing distance, and student pilots are not permitted to accept a LAHSO clearance.
LOC (Localizer)
A Localizer (LOC) is the lateral (azimuth) guidance component of an Instrument Landing System (ILS), broadcasting a directional VHF signal in the 108.10 to 111.95 MHz band that defines the extended runway centreline; while the LOC is one of the two ILS guidance elements (the other being the glideslope), it is also published as a standalone non-precision approach aid where no glideslope is installed or operational, giving rise to the distinct LOC and LOC BC (back course) approach procedure types.
Magneto & Ignition System
A magneto is an engine-driven generator that produces the high-voltage spark for a piston engine independently of the aircraft battery and alternator. Trainers use two magnetos feeding two spark plugs per cylinder, giving redundancy and more complete combustion.
Medical Certificate
A medical certificate is an FAA-issued document certifying that a pilot meets the physical and mental health standards required to exercise the privileges of their pilot certificate.
METAR (Aviation Routine Weather Report)
A METAR is a standardized, coded surface aviation weather observation issued every hour — or more frequently as a SPECI when conditions change significantly — from certified reporting stations worldwide, governed by ICAO Annex 3 and WMO Technical Regulations 49.3, and required for operator preflight weather assessment under 14 CFR §121.97 and FAA Order 7900.5.
Mixture Control & Leaning
The mixture control sets the ratio of fuel to air fed to a piston engine. Leaning reduces the fuel in the mixture to match the thinner air at altitude, improving efficiency and smoothness, while too-lean or too-rich settings waste fuel or risk engine damage.
Mountain Wave and Rotor
A mountain wave is an oscillating flow of air set up on the downwind side of a mountain range when strong, stable wind is forced up and over the terrain. It produces smooth but powerful updrafts and downdrafts, distinctive lenticular clouds at the wave crests, and violent, chaotic rotor turbulence beneath the crests near mountaintop level.
NDB (Non-Directional Beacon)
A Non-Directional Beacon (NDB) is a ground-based radio navigation transmitter operating in the Low Frequency (LF) and Medium Frequency (MF) bands (typically 190–535 kHz) that broadcasts a non-directional signal which the aircraft's Automatic Direction Finder (ADF) equipment uses to determine bearing to the station, supporting non-precision approaches, en-route navigation in regions with limited VOR coverage, and as a back-up navigation aid in primary VOR or GNSS-equipped aircraft.
Night Flight Time
Night flight time is the flight time logged between the end of evening civil twilight and the beginning of morning civil twilight — defined in 14 CFR §1.1 (FAA) and EASA Part-FCL FCL.010 by reference to the sun's position rather than a fixed clock time — and is required as a distinct logbook column because specific certificate, rating, and currency requirements use night time as a separate qualifying criterion.
Pilot Currency Rules (FAA)
FAA pilot currency rules — primarily codified in 14 CFR §61.57 for recent flight experience and §61.56 for flight review — define the minimum recurrent flight activity a certificated pilot must maintain to legally exercise the privileges of their certificate, covering passenger-carrying recency, night recency, and instrument recency.
POH (Pilot's Operating Handbook)
The Pilot's Operating Handbook (POH) is the manufacturer-produced operating manual for a specific aircraft serial number, structured under the GAMA (General Aviation Manufacturers Association) Specification No. 1 standard for FAA-certificated aircraft and required to be on board the aircraft during operation under 14 CFR 91.9 (FAA) and the equivalent operations regulations in other jurisdictions.
Pressure Altitude and ISA Deviation
Pressure altitude is the altitude above the standard datum plane, read when the altimeter is set to 29.92 inHg (1013.25 hPa). ISA deviation is the difference between the actual temperature and the temperature the International Standard Atmosphere predicts at that altitude. Together, pressure altitude and temperature drive density altitude and set the entry values for aircraft performance charts.
RNP (Required Navigation Performance)
Required Navigation Performance (RNP) is the ICAO Performance-Based Navigation (PBN) specification, defined in ICAO Doc 9613 (PBN Manual), that requires the aircraft to maintain a specified lateral navigation accuracy with onboard performance monitoring and alerting, distinguishing RNP from the related RNAV (Area Navigation) specification in which monitoring and alerting are not required.
Runway Markings, Signs & Lighting
The painted markings, airfield signs, and lighting that identify runways, taxiways, and holding positions and tell pilots where they may and may not go. This standardized visual language is the primary defense against runway incursions on the ground.
Stabilized Approach Criteria
Stabilized approach criteria are the operator-defined performance gates an aircraft must satisfy by a specified altitude (typically 1,000 ft AAL in IMC, 500 ft AAL in VMC) — codified in ICAO Doc 9870 (Manual on the Prevention of Runway Excursions), FAA AC 120-71 / 91-79, and EASA AMC1 ORO.GEN.110 — below which the approach must be discontinued via a missed approach if any criterion is unmet.
Student Pilot Certificate
A student pilot certificate is an FAA-issued authorization document that allows a student pilot to fly solo, serving as the foundational pilot certificate before earning a private pilot license.
Total Flight Time (Total Time)
Total flight time — colloquially "total time" on a pilot CV — is the aggregate of all flight time across all aircraft categories, all roles (PIC, SIC, dual, solo), and the entire career, defined under 14 CFR §1.1 (FAA) as pilot time commencing when the aircraft first moves under its own power for flight and ending when it comes to rest after landing, and under EASA Part-FCL FCL.010 with substantially equivalent language.
VASI & PAPI
VASI (Visual Approach Slope Indicator) and PAPI (Precision Approach Path Indicator) are runway light systems that show a pilot whether the aircraft is above, on, or below the visual glide path using combinations of red and white lights, most commonly to a 3-degree descent angle.
Visual Flight Rules (VFR)
Visual Flight Rules (VFR) are the regulations under which a pilot operates an aircraft in weather conditions clear enough to allow the pilot to see where the aircraft is going by visual reference to the ground and other aircraft.
Wind Shear and Microburst
Wind shear is a sudden change in wind speed or direction over a short distance, either horizontally or vertically. A microburst is an intense, short-lived convective downdraft whose horizontal outflow near the ground produces the most dangerous form of low-level wind shear, capable of overwhelming an aircraft's climb performance on takeoff or approach.
Regulatory(26)
Advisory Circular (AC)
An Advisory Circular (AC) is a non-regulatory guidance document published by the FAA — and analogously by EASA as Acceptable Means of Compliance (AMC) and Guidance Material (GM), by Transport Canada as Advisory Circular, and by other national authorities under similar names — that describes a method of compliance with regulatory requirements, provides interpretive guidance, or makes recommendations on aviation safety topics, with numbering aligned to the regulatory subject area it addresses.
Airman Certification Standards (ACS)
The Airman Certification Standards (ACS) are FAA documents that define the knowledge, risk management, and skill standards an applicant must demonstrate to earn each pilot certificate or rating.
Approved Training Organization (ATO)
An Approved Training Organization (ATO) is a flight training provider certified by a national aviation authority under EASA or ICAO standards to deliver approved pilot training courses.
ARFF (Aircraft Rescue and Firefighting)
Aircraft Rescue and Firefighting (ARFF) is the specialised airport emergency service responsible for responding to aircraft accidents, incidents, and emergencies on or in the immediate vicinity of an airport, with categorisation, equipment, and response standards governed by 14 CFR Part 139 in the FAA framework and ICAO Annex 14, Volume I, Chapter 9 internationally.
Aviation Medical Examiner (AME)
An Aviation Medical Examiner (AME) is a physician designated by the FAA under 14 CFR Part 183 §183.21 to examine applicants for FAA medical certificates and to issue First, Second, and Third-Class medical certificates on behalf of the FAA.
BasicMed
BasicMed is an FAA medical certification alternative that allows qualifying pilots to fly under a self-attested medical regime supervised by any state-licensed physician, in lieu of holding a Third-Class FAA Medical Certificate.
Canadian Recreational Pilot Permit
The Recreational Pilot Permit is a restricted Canadian pilot credential that sits below the Private Pilot Licence. It limits the holder to one passenger, day VFR flight, and non-high-performance single-engine aircraft, and can be exercised on a Category 4 self-declared medical.
CFR (Code of Federal Regulations)
The Code of Federal Regulations (CFR) is the codified body of general and permanent regulations issued by the executive departments and agencies of the US federal government, organised into 50 Titles by subject area, with aviation operating principally under Title 14 (Aeronautics and Space) and adjacent regulatory matter under Title 49 (Transportation, including TSA), Title 38 (Veterans Affairs, including GI Bill education benefits), and Title 10 (Armed Forces, including reserve component education programmes).
Class 2 Medical Certificate
A Class 2 medical certificate is the standard required for private pilot privileges in the EASA system (Part-MED) and for commercial pilot privileges in the FAA system (14 CFR Part 67 Subpart C, Second-Class), with validity periods and examination requirements less stringent than Class 1.
Class 3 / Third-Class Medical Certificate
A Third-Class medical certificate (FAA) is the minimum standard for exercising private pilot privileges under 14 CFR Part 67 Subpart D — and is the medical regime BasicMed was designed to relieve qualifying pilots from.
Color Vision Standards & Testing (OCVT / MFT)
The FAA color vision requirement — the ability to distinguish the aviation signal colors — is part of every medical examination under 14 CFR Part 67. Applicants who fail an approved screening test can still qualify through operational testing (the OCVT and, for higher classes, a Medical Flight Test), earning a Letter of Evidence that removes the color vision limitation.
Declared Training Organization (DTO)
A Declared Training Organization (DTO) is a lighter-weight EASA flight training provider that operates by declaration rather than full certification, authorized to offer PPL and LAPL training courses.
EASA (European Union Aviation Safety Agency)
EASA is the EU aviation safety agency established by Regulation (EC) 1592/2002 and now governed by Regulation (EU) 2018/1139, responsible for setting airworthiness, licensing, operations, and UAS standards across 31 European Member States.
FAR Part 121 — Scheduled Airline Operations
14 CFR Part 121 is the FAA regulation governing U.S. scheduled passenger and all-cargo air carrier operations, including domestic, flag, and supplemental operators such as American, Delta, United, FedEx, and UPS. It prescribes operating certificates, crewmember training programs (§121.401), flight/duty time limits (§§121.470–121.471), and mandatory Continuous Airworthiness Maintenance Programs (§121.367).
FAR Part 137 — Agricultural Aircraft Operations
14 CFR Part 137 governs agricultural aircraft operations in the United States — aerial application of pesticides, herbicides, fertilizers, and seed dispersal — establishing certificate requirements, pilot qualifications, operating limitations, and recordkeeping for both private and commercial ag operators.
FAR Part 67 — Medical Standards and Certification
14 CFR Part 67 establishes the FAA's medical standards for pilot certification, defining three classes of medical certificate — First, Second, and Third — with progressively less stringent standards, and the certification procedures governing issuance, denial, and Special Issuance.
Flight Training Organisation (FTO)
A Flight Training Organization (FTO) is an ICAO and legacy EASA term for an approved organization that provides flight crew training under a structured and regulated curriculum.
IACRA (Integrated Airman Certification and Rating Application)
IACRA is the FAA's web-based system for submitting, tracking, and processing airman certification and rating applications, replacing the traditional paper-based FAA Form 8710-1.
Licence Conversion
Licence conversion is the regulatory process by which a pilot certificate or rating issued by one civil aviation authority is recognized, validated, or re-issued by another authority — for example, converting an FAA PPL to an EASA Part-FCL PPL.
Light-Sport Aircraft (LSA)
Light-Sport Aircraft (LSA) is an FAA aircraft category defined in 14 CFR §1.1, limited to aircraft with a maximum takeoff weight of 1,320 lb (1,430 lb for seaplanes), a maximum stall speed of 45 knots CAS, a maximum cruise speed of 120 knots CAS, and no more than two seats — the category that Sport Pilot Certificate holders are authorized to fly.
Part 141
Part 141 refers to FAA-certificated flight schools that operate under 14 CFR Part 141, following an FAA-approved curriculum with structured syllabi, stage checks, and periodic oversight.
Part 61
Part 61 refers to flight training conducted under 14 CFR Part 61, where instructors set the curriculum and training pace without a formal FAA-approved syllabus.
Part-FCL
Part-FCL (Flight Crew Licensing) is the EASA regulation that establishes the requirements for the issue, revalidation, and renewal of flight crew licenses and ratings in European aviation.
Required Aircraft Documents (ARROW)
ARROW is the memory aid for the documents that must be aboard a US civil aircraft in flight: Airworthiness certificate, Registration certificate, Radio station license (for international operations), Operating limitations, and Weight and balance data. The requirement comes chiefly from 14 CFR 91.203 and 91.9.
UK National Private Pilot Licence (NPPL)
The UK National Private Pilot Licence is a UK-only, sub-ICAO pilot licence for simple light aircraft, microlights, and self-launching motor gliders. It is valid only on UK-registered aircraft in UK airspace and can be used with a self-declared Pilot Medical Declaration.
UK Pilot Medical Declaration (PMD)
The UK Pilot Medical Declaration is a self-certified medical route offered by the UK CAA. It lets qualifying private pilots fly light aircraft without an aviation medical examination, by declaring they meet the equivalent of the DVLA Group 1 driving medical standard.
Training(56)
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.
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.
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.
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 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.
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.
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.
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.
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.
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.
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-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.
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.
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.
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.
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).
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.
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-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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Upset Prevention and Recovery Training (UPRT)
Upset Prevention and Recovery Training (UPRT) is the specialized flight training mandated under EASA Part-FCL FCL.745.A and codified in ICAO Doc 10011 that prepares pilots to recognize, prevent, and recover from aeroplane upsets — large deviations in pitch, bank, or speed that can lead to Loss of Control In-Flight (LOC-I), the leading cause of fatal accidents in commercial aviation.
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Cadet Program and Bonded Training
A cadet program is an airline-sponsored ab-initio pilot training pipeline that recruits zero-time candidates and trains them to First Officer standard; bonded training is any arrangement in which the training cost is sponsored by an employer against a contractual service commitment, with liquidated damages provisions if the pilot leaves before the bond period expires.
Chapter 1606 — Montgomery GI Bill (Selected Reserve)
Chapter 1606 of Title 10 U.S. Code, the Montgomery GI Bill — Selected Reserve (MGIB-SR), is a US Department of Defense education benefit administered through the Department of Veterans Affairs that provides a monthly stipend during approved education or flight training to currently-serving members of the Selected Reserve and Army or Air National Guard, contingent on continued reserve service.
Chapter 30 — Montgomery GI Bill (Active Duty)
Chapter 30 of Title 38 U.S. Code, the Montgomery GI Bill — Active Duty (MGIB-AD), is a US Department of Veterans Affairs education benefit that pays the veteran a flat monthly stipend during enrolment in an approved education or flight training programme, in exchange for a $1,200 buy-in deduction taken from active-duty pay during the service member's first twelve months of service.
Chapter 31 — Veteran Readiness and Employment (VR&E)
Chapter 31 of Title 38 U.S. Code, formally known as Veteran Readiness and Employment (VR&E) and historically as Vocational Rehabilitation and Employment, is a US Department of Veterans Affairs programme that funds employment-oriented training — including flight training — for veterans with a service-connected disability rated at 10 percent or higher when VA counsellor evaluation determines training is necessary to overcome employment barriers caused by the disability.
Chapter 35 — Survivors' and Dependents' Educational Assistance (DEA)
Chapter 35 of Title 38 U.S. Code, the Survivors' and Dependents' Educational Assistance programme (DEA), is a US Department of Veterans Affairs education benefit that pays a monthly stipend during approved education or flight training to spouses and children of veterans who died in service, died of service-connected causes, or are permanently and totally disabled from service-connected causes.
Discovery Flight
A discovery flight is an introductory flying experience designed to give prospective students their first taste of piloting an aircraft, typically lasting 30 to 60 minutes with a certified flight instructor.
Dual Instruction
Dual instruction is flight time during which a student pilot flies with a certified flight instructor (CFI) who provides training, guidance, and oversight from the other seat.
Flight Hour
A flight hour is the fundamental unit of measurement in aviation training and billing, representing one hour of aircraft operation as recorded by the aircraft's Hobbs meter or tachometer.
Simulator Time
Simulator time is training time logged in a Flight Simulation Training Device (FSTD) — such as an AATD, BATD, or full-flight simulator — that may count toward the flight hour requirements for pilot certificates and ratings.