Are flashcards effective for the ASTB?

Yes. Flashcards use active recall — retrieving an answer from memory — which research shows is one of the most effective ways to make information stick. That's ideal for the ASTB's Aviation and Nautical Information Test, which is mostly memorizable knowledge.

What topics do the ASTB flashcards cover?

The four scored subtests and the test's structure: aviation aerodynamics and aircraft components, nautical and carrier terminology, mechanical comprehension (levers, pulleys, gears, fluids), math formulas, reading strategy, and the OAR, AQR, PFAR and FOFAR ratings.

How should I study with these flashcards?

Mix the modes: flip to learn, type to test recall, match for speed, and quiz to check yourself. Start early, review daily, and drill the highly memorizable Aviation and Nautical deck — it's the fastest place to gain points.

Are the ASTB flashcards free?

Yes — 100% free, all four study modes, no paywall.

The four forces of flight

Lift, weight, thrust, and drag. Lift opposes weight; thrust opposes drag.

The upward aerodynamic force, generated mainly by the wings, that opposes weight.

The downward force of gravity on the aircraft, opposed by lift.

The forward force from the engine or propeller that opposes drag.

The rearward force of air resistance that opposes thrust and the aircraft's motion.

Parasite drag (from the aircraft's shape, increases with speed) and induced drag (a by-product of lift, greatest at low speed).

Bernoulli's principle

As a fluid's speed increases, its pressure decreases. Faster air over a wing lowers pressure on top, helping create lift.

The angle between the wing's chord line and the oncoming air. Lift rises with it until the critical angle.

Critical angle of attack

The angle of attack beyond which airflow separates from the wing and it stalls.

A sudden loss of lift when the wing exceeds its critical angle of attack. It can occur at any airspeed.

Can a stall happen at high speed?

Yes. A stall is caused by exceeding the critical angle of attack, which can happen at any airspeed or attitude.

Increased lift and reduced drag when flying within about one wingspan of the ground.

An imaginary straight line from the leading edge to the trailing edge of a wing.

The cross-sectional shape of a wing or rotor blade designed to produce lift.

Swirling air shed from the wingtips, a source of induced drag and wake turbulence.

Primary controls on the wings' trailing edges that control roll about the longitudinal axis.

A primary control on the horizontal tail that controls pitch about the lateral axis.

A primary control on the vertical tail that controls yaw about the vertical axis.

Roll, pitch, yaw — which control?

Ailerons = roll, elevator = pitch, rudder = yaw.

The nose-to-tail axis; roll occurs about it (controlled by ailerons).

The wingtip-to-wingtip axis; pitch occurs about it (controlled by the elevator).

The up-down axis through the center; yaw occurs about it (controlled by the rudder).

Secondary high-lift devices on the wing's trailing edge that increase lift (and drag) at low speed.

Leading-edge high-lift devices that delay the stall by improving airflow at high angles of attack.

The tail assembly of an aircraft, including the horizontal and vertical stabilizers.

The main body of an aircraft that holds the crew, passengers, or cargo.

The fixed vertical tail fin that provides directional (yaw) stability; the rudder attaches to it.

Horizontal stabilizer

The fixed horizontal tail surface that provides pitch stability; the elevator attaches to it.

An instrument that shows the aircraft's altitude using atmospheric pressure.

An instrument that shows how fast the aircraft is moving through the air.

An instrument that shows the aircraft's pitch and bank relative to the horizon.

A forward-facing tube that measures ram air pressure for the airspeed indicator.

Equipment that replies to radar with a code and altitude so controllers can identify the aircraft.

Magnetic vs. true north

True north is the geographic pole; magnetic north is where the compass points. They differ by magnetic variation.

Coordinated Universal Time (UTC/GMT), used in aviation so everyone references one time zone.

One nautical mile per hour, the standard speed unit in aviation and at sea.

About 1.15 statute miles; based on one minute of latitude.

A runway's number is its magnetic heading rounded to the nearest 10 (e.g., heading 270 = runway 27).

The two ends of one runway differ by 18 (e.g., 09 and 27).

Tower light signals (steady/flashing green, red, white) used to direct aircraft that have lost radio communication.

A helicopter's spinning rotor acts like a rotating wing, generating lift as the blades move through the air.

Oxygen deficiency at altitude that impairs judgment and consciousness — a flight-physiology hazard.

Spatial disorientation

A pilot's inability to correctly sense aircraft attitude/position, especially without outside visual references.

Center of gravity (CG)

The balance point of the aircraft; loading must keep it within limits for safe control.

Four primary flight instruments

Altimeter, airspeed indicator, attitude indicator, and heading indicator (plus turn and vertical-speed).

An adjustment that relieves control pressure so the aircraft holds an attitude hands-off.

Your FREE ASTB Flashcards 2026 – 250+ Cards

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ASTB Flashcards

The four forces of flight: Lift, weight, thrust, and drag. Lift opposes weight; thrust opposes drag.
Lift: The upward aerodynamic force, generated mainly by the wings, that opposes weight.
Weight: The downward force of gravity on the aircraft, opposed by lift.
Thrust: The forward force from the engine or propeller that opposes drag.
Drag: The rearward force of air resistance that opposes thrust and the aircraft's motion.
Two types of drag: Parasite drag (from the aircraft's shape, increases with speed) and induced drag (a by-product of lift, greatest at low speed).
Bernoulli's principle: As a fluid's speed increases, its pressure decreases. Faster air over a wing lowers pressure on top, helping create lift.
Angle of attack: The angle between the wing's chord line and the oncoming air. Lift rises with it until the critical angle.
Critical angle of attack: The angle of attack beyond which airflow separates from the wing and it stalls.
Stall: A sudden loss of lift when the wing exceeds its critical angle of attack. It can occur at any airspeed.
Can a stall happen at high speed?: Yes. A stall is caused by exceeding the critical angle of attack, which can happen at any airspeed or attitude.
Ground effect: Increased lift and reduced drag when flying within about one wingspan of the ground.
Chord line: An imaginary straight line from the leading edge to the trailing edge of a wing.
Airfoil: The cross-sectional shape of a wing or rotor blade designed to produce lift.
Wingtip vortices: Swirling air shed from the wingtips, a source of induced drag and wake turbulence.
Ailerons: Primary controls on the wings' trailing edges that control roll about the longitudinal axis.
Elevator: A primary control on the horizontal tail that controls pitch about the lateral axis.
Rudder: A primary control on the vertical tail that controls yaw about the vertical axis.
Roll, pitch, yaw — which control?: Ailerons = roll, elevator = pitch, rudder = yaw.
Longitudinal axis: The nose-to-tail axis; roll occurs about it (controlled by ailerons).
Lateral axis: The wingtip-to-wingtip axis; pitch occurs about it (controlled by the elevator).
Vertical axis: The up-down axis through the center; yaw occurs about it (controlled by the rudder).
Flaps: Secondary high-lift devices on the wing's trailing edge that increase lift (and drag) at low speed.
Slats: Leading-edge high-lift devices that delay the stall by improving airflow at high angles of attack.
Empennage: The tail assembly of an aircraft, including the horizontal and vertical stabilizers.
Fuselage: The main body of an aircraft that holds the crew, passengers, or cargo.
Vertical stabilizer: The fixed vertical tail fin that provides directional (yaw) stability; the rudder attaches to it.
Horizontal stabilizer: The fixed horizontal tail surface that provides pitch stability; the elevator attaches to it.
Altimeter: An instrument that shows the aircraft's altitude using atmospheric pressure.
Airspeed indicator: An instrument that shows how fast the aircraft is moving through the air.
Attitude indicator: An instrument that shows the aircraft's pitch and bank relative to the horizon.
Pitot tube: A forward-facing tube that measures ram air pressure for the airspeed indicator.
Transponder: Equipment that replies to radar with a code and altitude so controllers can identify the aircraft.
Magnetic vs. true north: True north is the geographic pole; magnetic north is where the compass points. They differ by magnetic variation.
Zulu time: Coordinated Universal Time (UTC/GMT), used in aviation so everyone references one time zone.
Knot: One nautical mile per hour, the standard speed unit in aviation and at sea.
Nautical mile: About 1.15 statute miles; based on one minute of latitude.
Runway numbering: A runway's number is its magnetic heading rounded to the nearest 10 (e.g., heading 270 = runway 27).
Opposite runway ends: The two ends of one runway differ by 18 (e.g., 09 and 27).
Light-gun signals: Tower light signals (steady/flashing green, red, white) used to direct aircraft that have lost radio communication.
Helicopter lift: A helicopter's spinning rotor acts like a rotating wing, generating lift as the blades move through the air.
Hypoxia: Oxygen deficiency at altitude that impairs judgment and consciousness — a flight-physiology hazard.
Spatial disorientation: A pilot's inability to correctly sense aircraft attitude/position, especially without outside visual references.
Center of gravity (CG): The balance point of the aircraft; loading must keep it within limits for safe control.
Four primary flight instruments: Altimeter, airspeed indicator, attitude indicator, and heading indicator (plus turn and vertical-speed).
Trim: An adjustment that relieves control pressure so the aircraft holds an attitude hands-off.
Throttle: The control that sets engine power and therefore thrust.
Bank: The angle the aircraft is rolled left or right; banking turns the aircraft.
Leading edge: The front edge of a wing that first meets the oncoming air.
Trailing edge: The rear edge of a wing where ailerons and flaps are located.
Port: The left side of a ship or aircraft when facing the bow (front).
Starboard: The right side of a ship or aircraft when facing the bow (front).
Bow: The front of a ship.
Stern: The back of a ship.
Memory aid for port: 'Port' and 'left' both have four letters.
CV / CVN: Designation for an aircraft carrier (CVN = nuclear-powered).
DDG: Designation for a guided-missile destroyer.
Amphibious assault ship: A 'big-deck' (L-class) ship that carries Marines, helicopters, and vertical/short-takeoff aircraft.
Catapult: A flight-deck device that accelerates an aircraft to flying speed for launch (CATOBAR carriers).
Arresting gear: Cables on the flight deck that a landing aircraft's tailhook catches to stop quickly.
Tailhook: A hook lowered from a carrier aircraft to catch an arresting cable on landing.
CATOBAR: Catapult-Assisted Take-Off But Arrested Recovery — the U.S. carrier launch/recovery method.
The island: The superstructure (command tower) on a carrier's flight deck.
Hangar bay: The enclosed deck below the flight deck where aircraft are stored and maintained.
Yellow shirt (flight deck): Aircraft director, catapult, and arresting-gear officer on the carrier flight deck.
Purple shirt ('grapes'): Aviation fuel handlers on the carrier flight deck.
Red shirt (flight deck): Ordnance handlers and the crash & salvage crew on the flight deck.
Green shirt (flight deck): Catapult and arresting-gear crews and maintenance personnel.
Blue shirt (flight deck): Aircraft handlers / plane pushers who move and chock aircraft.
White shirt (flight deck): Safety, medical, and landing-signal officers.
Keel: The central structural backbone running along the bottom of a ship's hull.
Hull: The watertight body of a ship.
Aft: Toward the stern (rear) of a ship.
Forward (naut.): Toward the bow (front) of a ship.
Knots at sea: Ship speed is measured in knots — one nautical mile per hour.
Helm: The ship's steering control (the wheel).
List: A persistent lean of a ship to one side.
Draft (ship): The vertical distance from the waterline to the bottom of the hull.
First-class lever: Fulcrum in the middle, between effort and load (e.g., a seesaw or crowbar).
Second-class lever: Load in the middle, between fulcrum and effort (e.g., a wheelbarrow). Always multiplies force.
Third-class lever: Effort in the middle, between fulcrum and load (e.g., tweezers or the forearm). Multiplies distance, not force.
Memory aid for lever classes: By what's in the middle: Fulcrum (1st), Load (2nd), Effort (3rd) — 'FLE.'
Fulcrum: The fixed pivot point about which a lever rotates.
Mechanical advantage: Output force divided by input force — how much a machine multiplies your effort.
Trade-off of mechanical advantage: More force always costs more distance: you move the effort farther to move the load less.
Fixed pulley: Changes only the direction of a force; gives no mechanical advantage.
Movable pulley: Attached to the load; provides mechanical advantage, roughly halving the effort needed.
Meshed gears direction: Two meshed gears turn in opposite directions.
Idler gear: A gear placed between two others so they turn the same direction; it doesn't change the gear ratio.
Gear ratio: The ratio of teeth between meshed gears; sets the trade between speed and torque.
Small vs. large gear speed: The smaller gear (fewer teeth) turns faster but with less torque.
Torque: A twisting force that causes rotation; equals force times the distance from the pivot.
Bernoulli (mechanical): Faster fluid flow means lower pressure.
Boyle's law: At constant temperature, a gas's pressure and volume are inversely related (squeeze it, pressure rises).
Pascal's principle: Pressure applied to a confined fluid transmits equally in all directions — the basis of hydraulics.
Hydraulic advantage: A small force on a small piston creates pressure that lifts a large load on a big piston.
Pressure: Force per unit area; smaller area under the same force means higher pressure.
Inclined plane: A ramp; a simple machine that reduces the force needed to raise a load by increasing the distance.
Screw: An inclined plane wrapped around a cylinder; converts rotation into linear force.
Wedge: Two inclined planes back to back; converts a driving force into splitting force.
Wheel and axle: A simple machine where a large wheel turns a small axle (or vice versa) to trade force and distance.
Friction: A force that opposes motion between surfaces in contact; produces heat and wastes energy.
Four-stroke engine cycle: Intake, compression, power, exhaust.
Newton's first law: An object stays at rest or in motion unless acted on by a net force (inertia).
Newton's second law: Force equals mass times acceleration (F = ma).
Newton's third law: For every action there is an equal and opposite reaction.
Center of gravity (mechanics): The point where an object's weight is balanced; affects stability and tipping.
Series circuit: Components in one path; the same current flows through all, and one break stops the circuit.
Parallel circuit: Components on separate branches; each gets the full voltage, and one break doesn't stop the others.
Fuse: A safety device that melts to break a circuit when current is too high.
Density: Mass per unit volume; objects less dense than a fluid float.
Buoyancy: The upward force a fluid exerts on a submerged or floating object.
Work: Force times the distance moved in the direction of the force.
Potential vs. kinetic energy: Potential is stored (e.g., by height); kinetic is the energy of motion.
Spring force: A spring's restoring force is proportional to how far it is stretched or compressed.
Velocity vs. pressure in a pipe: Where a pipe narrows, fluid speeds up and its pressure drops (Bernoulli).
Distance, rate, time formula: distance = rate × time (d = rt).
Solve for rate: rate = distance ÷ time.
Solve for time: time = distance ÷ rate.
Order of operations (PEMDAS): Parentheses, Exponents, Multiplication/Division (left to right), Addition/Subtraction (left to right).
Slope of a line: Change in y over change in x (rise over run): m = (y2 − y1) ÷ (x2 − x1).
Slope-intercept form: y = mx + b, where m is the slope and b is the y-intercept.
Area of a rectangle: length × width.
Area of a triangle: one-half × base × height (½bh).
Area of a circle: pi × radius squared (πr²).
Circumference of a circle: 2 × pi × radius (2πr).
Pythagorean theorem: For a right triangle, a² + b² = c² (c is the hypotenuse).
Probability of an event: favorable outcomes ÷ total equally likely outcomes (a value from 0 to 1).
Probability of two independent events: Multiply their individual probabilities.
Percent change: change ÷ original value × 100.
Increase by 25%: Multiply by 1.25.
Decrease by 25%: Multiply by 0.75.
Convert 1/4 to a percent: 25%.
Convert 1/3 to a decimal: About 0.333.
Convert 3/4 to a percent: 75%.
Negative exponent: x⁻ⁿ = 1 ÷ xⁿ.
Product of like bases: xᵐ × xⁿ = xᵐ⁺ⁿ (add the exponents).
Power of a power: (xᵐ)ⁿ = xᵐⁿ (multiply the exponents).
√144 equals what?: 12.
Solve 3x + 7 = 22: x = 5 (subtract 7, then divide by 3).
Average (mean): Sum of the values divided by how many there are.
Median: The middle value of an ordered list (average the two middle values if even).
Mode: The value that appears most often in a data set.
Ratio: A comparison of two quantities, written a : b or a/b.
Proportion: An equation stating two ratios are equal; solve by cross-multiplying.
Interest (simple): Interest = principal × rate × time.
Fraction to decimal: Divide the numerator by the denominator.
Flip an inequality sign when...: You multiply or divide both sides by a negative number.
Perimeter of a rectangle: 2 × (length + width).
Volume of a rectangular box: length × width × height.
Sum of a triangle's interior angles: 180 degrees.
Angles on a straight line: Add up to 180 degrees.
Angles around a point: Add up to 360 degrees.
Exponent of zero: Any nonzero number to the power 0 equals 1.
Absolute value: The distance of a number from zero; always non-negative.
Prime number: A whole number greater than 1 with no divisors other than 1 and itself.
Greatest common factor (GCF): The largest number that divides two or more numbers evenly.
Least common multiple (LCM): The smallest number that two or more numbers all divide into.
Reciprocal: 1 divided by the number; multiplying a number by its reciprocal gives 1.
Convert a decimal to a percent: Multiply by 100 and add a percent sign.
Calculator on the Math Skills Test?: No — none allowed; you get scratch paper only.
RCT golden rule: Answer only from the passage — never from outside knowledge.
True-but-unsupported trap: An answer accurate in the real world but not established by the passage; it's wrong.
Main idea: The central point the whole passage supports — broader than any single detail.
Supporting detail: A specific fact the passage states that backs the main idea.
Inference (reading): A conclusion the passage implies but doesn't state outright; pick the best-supported one.
Absolute-word trap: Choices with 'always,' 'never,' or 'all' often overstate the passage.
Predict-then-match: Paraphrase the question and predict the answer before reading the choices.
Eliminate strategy: Cross out choices you can't support with a line from the text.
Author's tone: The attitude the writing conveys (e.g., critical, neutral, enthusiastic).
Author's purpose: Why the passage was written — to inform, persuade, describe, or compare.
Scope trap: An answer that's too broad or too narrow compared with what the passage covers.
Time management (RCT): Don't over-read; find the supporting line and move on under time pressure.
Paraphrase the question: Restate it in your own words to clarify exactly what's being asked.
Best-supported answer: On every reading question, the credited choice is the one the text most directly backs.
Distractor: A wrong answer choice designed to look attractive (twisted detail, half-true, off-topic).
Read for logic: Track how the author's ideas connect — claim, evidence, conclusion.
ASTB-E: Aviation Selection Test Battery (Enhanced) — used by the Navy, Marine Corps, and Coast Guard to select officer aviation candidates.
How many ASTB-E subtests?: Seven.
The seven subtests: Math Skills, Reading Comprehension, Mechanical Comprehension, Aviation & Nautical Information, NATFI, Performance Based Measures, and a Biographical Inventory.
MST: Math Skills Test — arithmetic, algebra, and geometry, no calculator. One of the three OAR subtests.
RCT: Reading Comprehension Test — answer only from the passage. One of the three OAR subtests.
MCT: Mechanical Comprehension Test — applied physics. One of the three OAR subtests.
ANIT: Aviation and Nautical Information Test — aviation and seamanship knowledge; the most study-able subtest.
NATFI: Naval Aviation Trait Facet Inventory — a forced-choice personality inventory with no right answers.
PBM: Performance Based Measures — psychomotor and multitasking tasks on a stick-and-throttle controller with headphones.
BI-RV: Biographical Inventory with Response Validation — background questions with a built-in honesty check.
OAR: Officer Aptitude Rating — a 20–80 score from the Math, Reading, and Mechanical subtests.
Which subtests make up the OAR?: Math Skills, Reading Comprehension, and Mechanical Comprehension.
OAR score range: 20 to 80, with an average band around 40–60 (a t-score, not a stanine).
AQR: Academic Qualifications Rating — a 1–9 stanine predicting ground-school/academic success.
PFAR: Pilot Flight Aptitude Rating — a 1–9 stanine predicting primary-flight success for pilots.
FOFAR: Flight Officer Flight Aptitude Rating — a 1–9 stanine predicting flight success for naval flight officers.
Stanine: A 'standard nine' score (1–9) where 5 is average and 9 is the top ~4%.
Which ratings do pilot boards use?: AQR and PFAR.
Which ratings do NFO boards use?: AQR and FOFAR.
ASTB-E attempt limit: Three attempts in a lifetime; the cap cannot be waived.
Wait between 1st and 2nd attempt: 30 days.
Wait between 2nd and 3rd attempt: 90 days.
Which scores count on a retake?: Your most recent scores — even if they are lower.
Do ASTB scores expire?: No; your most recent valid scores stay on record until you test again.
Calculator on the ASTB?: Not allowed on the Math Skills Test — scratch paper only.
Is part of the ASTB adaptive?: Yes — the three academic subtests (Math, Reading, Mechanical) are computer-adaptive.
Full ASTB-E length: Roughly 2 to 3¼ hours.
OAR-only length: About 1½ to 2 hours.
HOTAS: Hands-On-Throttle-And-Stick — the stick-and-throttle controller used for the PBM.
PBM stick orientation: Inverted — push the stick forward and the cursor goes down, like real aircraft pitch.
Dichotic listening: A PBM task with different audio in each ear; attend to one ear and respond to it.
Can you study the PBM?: Not really — you can only familiarize yourself with the controls and the task stack.
ASTB vs. OAR: The OAR is part of the ASTB-E — it's the three academic subtests. The full ASTB adds aviation, personality, performance, and biographical subtests plus the aviation ratings.
Who owns the ASTB-E?: The Naval Aerospace Medical Institute (NAMI) at NAS Pensacola.
Lift formula factors: Lift depends on air density, wing area, the lift coefficient, and the square of velocity.
Induced drag at low speed: Induced drag is greatest at low airspeed/high angle of attack (e.g., during slow flight and takeoff).
Parasite drag at high speed: Parasite drag rises sharply as airspeed increases.
Dihedral: The upward angle of the wings from root to tip; it improves roll (lateral) stability.
Camber: The curvature of an airfoil; more camber generally produces more lift at a given speed.
Yaw: Rotation of the nose left or right about the vertical axis, controlled by the rudder.
Pitch: Rotation of the nose up or down about the lateral axis, controlled by the elevator.
Roll: Rotation of the wings up or down about the longitudinal axis, controlled by the ailerons.
Adverse yaw: The tendency of the nose to yaw opposite the direction of a roll; the rudder coordinates the turn.
Spoilers: Panels that rise from the wing to reduce lift and increase drag, used to descend or slow down.
Turbine engine: A jet engine that compresses air, adds fuel and ignites it, and expels exhaust to produce thrust.
Propeller: An airfoil that rotates to produce thrust by accelerating air rearward.
Heading indicator: An instrument showing the aircraft's compass heading.
Vertical speed indicator: An instrument showing the rate of climb or descent.
Turn coordinator: An instrument showing rate of turn and whether the turn is coordinated.
Service ceiling: The maximum altitude at which an aircraft can maintain a specified minimum climb rate.
Wright brothers: Credited with the first powered, controlled airplane flight in 1903 — common aviation-history fact.
Mach number: The ratio of an aircraft's speed to the speed of sound.
Center of pressure: The point on a wing where the total aerodynamic force acts; it moves with angle of attack.
Stall recovery: Reduce the angle of attack (lower the nose) and add power to regain airflow over the wing.
Standard atmosphere pressure: About 29.92 inches of mercury (1013 hPa) at sea level.
Three axes of flight: Longitudinal (roll), lateral (pitch), and vertical (yaw).
Topside: The weather decks / upper exterior of a ship.
Bulkhead: A vertical partition (wall) inside a ship.
Overhead: The ceiling of a compartment aboard ship.
Deck (ship): The floor of a compartment aboard ship.
Galley: The kitchen aboard a ship.
Bridge: The command center from which a ship is steered and navigated.
Ballast: Weight (often water) carried low in a ship to improve stability.
Mooring: Securing a ship to a pier, buoy, or anchor.
Knot (line): Also a unit of speed: one nautical mile per hour.
Fantail: The aftermost part of a ship's main deck.
Pressure and area: For a given force, smaller area produces greater pressure (P = F ÷ A).
Block and tackle: A pulley system using multiple movable pulleys to multiply force greatly.
Equilibrium: A state with no net force or torque, so an object stays at rest or moves steadily.
Acceleration: The rate of change of velocity; produced by a net force.
Momentum: Mass times velocity; conserved in collisions.
Lever balance: A lever balances when effort × effort-arm equals load × load-arm.
Heat expansion: Most materials expand when heated and contract when cooled.
Conduction: Heat transfer through direct contact between materials.
Voltage, current, resistance: Ohm's law: voltage = current × resistance (V = IR).
Static vs. kinetic friction: Static friction (before motion) is usually greater than kinetic friction (during motion).
Lubrication: Reduces friction between moving parts, cutting wear and heat.
Hydraulic brake: Uses Pascal's principle to transmit pedal force through fluid to the brake pads.
Context clues: Use surrounding words to infer a term's meaning within the passage.
Topic sentence: Often states the main idea of a paragraph; a quick anchor for comprehension.
Implied main idea: When the main point isn't stated outright, synthesize it from the details.
Cause and effect: Identify which event leads to which outcome in the passage.
Compare and contrast: Note how the passage shows similarities and differences between ideas.
Fact vs. opinion: Distinguish verifiable statements from the author's judgments.
Convert minutes to hours: Divide minutes by 60.
Average speed (round trip): Total distance divided by total time — not the average of the two speeds.
Distributive property: a(b + c) = ab + ac.
Percent of a number: Multiply the number by the percent written as a decimal.
Two objects approaching: Add their speeds to get the closing rate.
One object overtaking another: Subtract the slower speed from the faster to get the gap-closing rate.
Square of 12: 144.
Square of 15: 225.
Where is the ASTB administered?: At Navy recruiting offices, NROTC units, Marine officer-selection offices, and military institutes — 250+ sites.
Why no calculator on the MST?: To measure your mental math and number sense under time pressure.
Is the ANIT worth studying?: Yes — it's largely knowledge, so it's the most improvable subtest and a fast way to raise aviation ratings.
Average stanine: 5 (the 40th–60th percentile).
Competitive aviation stanine: Generally 6 or higher.

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By Career EmployerUpdated Sep 12, 2026

250+ free ASTB flashcards — 4 ways to study

ASTB Flashcard of the DayNew daily

The classic card. Do you know this one?

Click Study Flashcards above to open the flashcard hub — 250+ ASTB cards you can flip, match, type, or quiz yourself on. Every card is drawn from the ASTB-E subtests — aviation, mechanical, math, and nautical knowledge — so you study exactly what the exam tests.^[1] Pair them with our free practice test and study guide.

ASTB Flashcard Study Modes

Flip mode walks you through one card at a time so you can rate what stuck. Match turns terms and definitions into a timed sorting game. Type shows the definition and asks you to spell the term back, so a card like Fulcrum has to come from memory. Quiz builds multiple choice questions from the same 274 cards.

Free ASTB flashcards from Career Employer — active recall for aviation, mechanical, math, and nautical knowledge

Why Flashcards Work for the ASTB

Aviation: Aerodynamics & Aircraft is the biggest block at 72 cards, and it drills the vocabulary that flight-oriented questions lean on: the three axes and the forces acting on an airframe, plus cockpit and performance language. Expect fronts such as Yaw, Bank and Stall, along with Lift, Drag and Trim, so the words are automatic before you reason about a scenario.

Math Skills carries 53 cards covering the arithmetic and algebra vocabulary you have to recognize instantly, from Median and Mode to Reciprocal, Proportion and Prime number, with recall items like Square of 12 and Square of 15. Mechanical Comprehension adds 50 cards on physics and simple machines, where Torque, Fulcrum and Wedge sit next to Work, Friction and Density.

Subtests, Ratings & Test Format holds 39 cards on the structure of the exam and the scores it produces, including the card that asks about OAR and companion fronts such as AQR, PFAR and ANIT, plus subtest labels like MCT and PBM. Nautical & Carrier Knowledge runs 38 cards on ship orientation and hardware, with Bow, Aft and Port alongside Keel, Helm and DDG.

Reading Comprehension Strategy is the smallest set at 22 cards, and it names the habits and traps rather than content facts. Fronts like Main idea, Scope trap and Distractor sit beside Author’s tone, Topic sentence and the RCT golden rule, giving you language for why a tempting answer choice is still wrong.

That matters for the ASTB, whose Aviation and Nautical Information Test is mostly memorizable facts (the four forces, control surfaces, carrier deck colors, nautical terms) and whose Mechanical and Math subtests reward instant recall of core concepts and formulas. Used alongside our practice test and study guide, flashcards turn review time into measurable progress.^[3]

ASTB Flashcards by Subtest

The cards are organized by ASTB-E subtest. Weight your study toward the highly memorizable Aviation and Nautical decks — that’s the most study-able subtest — while keeping the Mechanical and Math concepts sharp:^[1]

ASTB flashcards by subtest (2026)
Subtest area	What the cards cover
Aviation: Aerodynamics & Aircraft	Four forces, lift, stall, control surfaces, instruments, flight terms
Nautical & Carrier Knowledge	Port/starboard, ship designations, carrier ops, flight-deck jersey colors
Mechanical Comprehension	Levers, pulleys, gears, hydraulics, fluids, gas laws, engines, circuits
Math Skills	Formulas, conversions, rates, probability, algebra and geometry essentials
Reading Comprehension Strategy	Passage-only answers, distractor traps, main-idea and inference tactics
Subtests, Ratings & Format	The 7 subtests, the OAR/AQR/PFAR/FOFAR ratings, attempts and the PBM

How to Get the Most Out of These Flashcards

Start with aviation. Aviation: Aerodynamics & Aircraft is the largest domain at 72 cards, and its terms reappear inside mechanical and nautical questions, so early passes there pay off twice.
Type-drill the definitions you fumble. Reciprocal and Torque are good first targets, since recognizing them in Flip is easier than producing them cold from the definition.
Use Match for short labels. The one-word nautical fronts and the subtest acronyms sort quickly under time pressure, which is exactly how you want to recall Bow, Aft and OAR.
Switch to the practice test once Quiz stops surprising you. When multiple choice on a domain runs clean, move to full-length timing and use the study guide for the gaps it exposes.
Rotate rather than marathon. Cycle two domains per session across the 274 cards, revisiting Mechanical Comprehension and Math Skills often, and keep the 22 reading strategy cards as a short closing set.

ASTB Flashcards FAQ

Hundreds of free ASTB-E flashcards, organized across the subtests — aerodynamics and aircraft, nautical and carrier knowledge, mechanical comprehension, math skills, reading strategy, and the ratings/format. They're free to use with no account required.

References

1.U.S. Marine Corps. “Marine Corps Aviation — Officer Programs.” U.S. Marine Corps. ↑
2.Federal Aviation Administration. “Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25).” Federal Aviation Administration. ↑
3.Institute of Education Sciences (U.S. Dept. of Education). “Organizing Instruction and Study to Improve Student Learning (Practice Guide).” What Works Clearinghouse, IES. ↑

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