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100+ Free FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Practice Questions

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Key Facts: FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Exam

PWS

Test Code

FAA Airman Knowledge Testing Matrix

60 Questions

Official Question Count

FAA Airman Knowledge Testing Matrix

2.5 Hours (150 Min)

Time Limit

FAA Airman Knowledge Testing Matrix

70%

Passing Score

FAA Airman Knowledge Testing Matrix

Prepare for the FAA PWS Weight-Shift-Control Private Pilot Knowledge Test with 100 practice questions covering trike control bar mechanics, flex-wing aerodynamics, pitch tuck hazards, Rotax engine systems, density altitude calculations, cross-country navigation, airspace, and Part 61/91 rules. The official exam consists of 60 questions with a 2.5-hour time limit and 70% passing score.

Sample FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Practice Questions

Try these sample questions to test your FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a weight-shift-control (WSC) aircraft, pushing the control bar forward (away from the pilot) produces which primary flight reaction?
A.Shifts the carriage center of gravity aft relative to the wing pivot point, increasing wing angle of attack and decreasing airspeed.
B.Shifts the carriage center of gravity forward relative to the wing pivot point, decreasing wing angle of attack and increasing airspeed.
C.Shifts the carriage center of gravity to the left, causing the left wing to drop and initiating a left banked turn.
D.Increases engine thrust by mechanically advancing the throttle linkage attached to the control bar.
Explanation: Pushing the control bar forward shifts the trike carriage center of gravity (CG) backward (aft) relative to the wing hang point. This causes the wing nose to pitch up, increasing the angle of attack and lowering the trim airspeed.
2To initiate a left turn in a weight-shift-control trike, the pilot must move the control bar in which direction?
A.To the right
B.To the left
C.Forward away from the chest
D.Straight back toward the chest
Explanation: Moving the control bar to the right pushes the carriage CG to the left side relative to the wing keel. The increased weight on the left side causes the left wing to drop and initiates a left turn.
3How does roll control input in a weight-shift-control aircraft compare to conventional fixed-wing airplane control stick movements?
A.Control bar displacement is opposite: pushing the control bar right rolls the aircraft left, whereas pushing a stick right rolls an airplane right.
B.Control bar displacement is identical in all axes to conventional three-axis airplane stick inputs.
C.Pushing the control bar right increases power to the left engine, causing yaw into the turn.
D.Control bar movement alters wing flap deflection rather than shifting center of gravity.
Explanation: Because weight-shift control relies on shifting the carriage suspended below the wing pivot, moving the bar right shifts the carriage CG left, rolling the aircraft left. This is opposite to conventional airplane stick inputs where moving right bank rolls right.
4If a weight-shift-control wing hang block is adjusted forward on the wing keel tube prior to flight, how will hands-off cruise performance be affected?
A.Hands-off trim airspeed will increase because the carriage weight is suspended further forward relative to the wing center of lift.
B.Hands-off trim airspeed will decrease because the wing operates at a higher trim angle of attack.
C.Roll stability will decrease dramatically, causing severe adverse yaw in turns.
D.Stall speed will decrease due to increased aerodynamic camber of the sail.
Explanation: Moving the hang point forward positions the carriage weight further forward relative to the wing aerodynamic center. This lowers the wing nose attitude at rest, decreasing trim angle of attack and increasing hands-off cruise airspeed.
5Adjusting the hang block position aft on the wing keel results in which flight characteristic?
A.A lower hands-off trim airspeed and higher pitch attitude in level cruise flight.
B.A higher hands-off trim airspeed and lower pitch attitude in level cruise flight.
C.Increased control bar force required to initiate roll maneuvers.
D.An automatic increase in maximum allowable takeoff gross weight.
Explanation: Moving the hang block aft moves the suspended weight aft relative to the wing center of lift. The wing pitches up to establish equilibrium, resulting in a higher angle of attack and a lower hands-off cruise trim speed.
6What is the aerodynamic function of sail 'billow' in a flexible weight-shift-control wing?
A.Billow allows dynamic twist and camber changes across the wing half, providing roll stability and smooth handling response.
B.Billow maintains rigid wing geometry to prevent wingtip stalls at high angles of attack.
C.Billow eliminates the requirement for battens by inflating the sail with ram-air pressure.
D.Billow increases structural wing rigidity to raise the maximum maneuvering speed (Va).
Explanation: Billow refers to the slack or curvature in the sail fabric between the leading edge and keel. When the wing yaws or banks, billow allows the trailing edge to deform unevenly, creating automatic aerodynamic roll stability and lighter control bar forces.
7How does leading-edge sweepback contribute to the aerodynamic stability of a weight-shift-control flex wing?
A.Sweepback combines with wing washout to produce positive longitudinal pitch stability and directional self-centering.
B.Sweepback shifts the center of pressure forward during stalls, accelerating pitch-up into a deep stall.
C.Sweepback eliminates induced drag completely during steep banked turns.
D.Sweepback locks the keel rigid, preventing any relative motion between carriage and wing.
Explanation: Leading-edge sweepback places the wingtips behind the wing root. Combined with washout (lower angle of attack at tips), the tips produce a nose-up pitching moment when the wing pitches down, giving the tailless wing longitudinal stability.
8What is 'reflex' in a weight-shift-control wing sail, and why is it critical to flight safety?
A.Reflex is the upward curvature of the trailing edge near the wing center or tips, generating a positive nose-up pitching moment at low angles of attack.
B.Reflex is the downward deflection of the leading edge, increasing maximum lift coefficient for short takeoff performance.
C.Reflex is the elastic stretch of side wires during high-g maneuvering to prevent structural failure.
D.Reflex is the automatic detachment mechanism of the carriage from the wing in an inverted tumble.
Explanation: Reflex refers to the upswept trailing edge profile of the airfoil. Because tailless WSC wings lack a horizontal stabilizer, reflex acts like an elevator trimmed up, producing a restoring nose-up aerodynamic force at low or zero angles of attack.
9What is the primary function of luff lines (up-haul lines) on a flex-wing weight-shift-control aircraft?
A.They support the trailing edge battens at low angles of attack to maintain sail reflex and prevent pitch tuck.
B.They transmit pilot roll control inputs from the control bar directly to the wingtips.
C.They secure the carriage wheels to the crossbar during ground transportation.
D.They adjust engine propeller pitch in flight based on airspeed changes.
Explanation: Luff lines run from the kingpost to the trailing edge of the wing sail. When the wing experiences low angle of attack or zero-g, the luff lines become taut and hold the trailing edge up, preserving reflex and preventing a nose-down pitch tuck.
10On modern kingpostless flex wings, internal transverse struts known as 'sprogs' perform what vital aerodynamic role?
A.They act as mechanical stops that hold the outer trailing edge battens up at low angles of attack to prevent pitch tuck.
B.They replace the main crossbar by absorbing all outboard landing compression loads.
C.They lock the control bar forward during high-speed cruise flight.
D.They act as automatic spoilers that deploy during steep descents to limit airspeed.
Explanation: Sprogs are cantilevered internal struts inside kingpostless wings. Under low angle of attack or low load factors, the outer sail rests on the sprogs, maintaining positive washout and reflex to prevent pitch tuck and tumble.

About the FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Exam

The FAA PWS Knowledge Test is required for applicants seeking a Private Pilot Certificate with a Weight-Shift-Control rating under 14 CFR Part 61. The exam evaluates comprehensive knowledge of trike control mechanics, CG shift principles, flex-wing aerodynamics (sweep, billow, reflex, luff lines), zero-g pitch tuck hazards, Rotax 2-stroke and 4-stroke engine systems, carriage structural assembly, density altitude calculations, crosswind performance, Part 61/91 regulations, airspace rules, and VFR flight planning.

Assessment

60 multiple-choice questions administered via computer at PSI testing centers covering WSC control bar mechanics, hang glider wing aerodynamics, Rotax engine systems, pitch tuck dynamics, Part 61/91 rules, density altitude, weight and balance, cross-country navigation, and airspace.

Time Limit

2.5 hours (150 minutes)

Passing Score

70%

Exam Fee

$175 (Federal Aviation Administration (FAA) / PSI Services)

FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Exam Content Outline

25%

WSC Aerodynamics, Control Bar Mechanics & Flight Principles

Center of Gravity (CG) shift mechanics, control bar movement vs pitch/roll reaction, hang point adjustment, wing billow, wing sweep, washout, reflex, luff lines/sprogs, zero-g pitch tuck hazards, and stall/spin characteristics.

20%

Carriage Structure, Engine Systems & Propellers

Carriage assembly (mast, pylon, keel, drag struts), hang bolt single-point attachment inspection, Rotax 2-stroke/4-stroke engines, pre-mix vs oil injection, dual carburetors, reduction drives, EGT/CHT monitoring, fuel contamination, and pusher prop hazards.

20%

Performance, Weight & Balance, Density Altitude & Calculations

Carriage CG calculations, wing loading effects, density altitude computation (pressure altitude + temperature adjustment), crosswind component calculation, fuel burn/endurance planning, takeoff/landing distance factors, and glide ratio performance.

20%

14 CFR Part 61 & 91 Regulations & National Airspace System

Private pilot aeronautical experience requirements (§61.109), currency (§61.57), flight review (§61.56), minimum safe altitudes (§91.119), VFR fuel reserves (§91.151), right-of-way rules (§91.113), airspace classes A-G weather minimums (§91.155), and transponder/ADS-B requirements.

15%

Navigation, Weather Services & Flight Operations Hazards

Sectional chart reading, True/Magnetic headings, wind triangle vectoring, METAR/TAF analysis, atmospheric stability, thunderstorm/microburst hazards, wind shear, wake turbulence avoidance, and Ballistic Recovery System (BRS) deployment.

How to Pass the FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Exam

What You Need to Know

  • Passing score: 70%
  • Assessment: 60 multiple-choice questions administered via computer at PSI testing centers covering WSC control bar mechanics, hang glider wing aerodynamics, Rotax engine systems, pitch tuck dynamics, Part 61/91 rules, density altitude, weight and balance, cross-country navigation, and airspace.
  • Time limit: 2.5 hours (150 minutes)
  • Exam fee: $175

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

FAA PWS Knowledge Test — Private Pilot Weight-Shift-Control Study Tips from Top Performers

1Master the fundamental control inputs: pushing the control bar forward/out increases angle of attack (airspeed decreases), pulling in decreases angle of attack (airspeed increases), and pushing right rolls the aircraft left.
2Understand flex-wing aerodynamic features: reflex (upswept trailing edge) provides positive pitch pitching moment at low angles of attack, and luff lines/sprogs mechanically maintain reflex under low-g conditions.
3Practice numerical calculations for density altitude ($DA = PA + [120 \times (OAT - ISA)]$), crosswind components ($Wind \times \sin \theta$), weight and balance ($CG = Moment / Weight$), and fuel endurance with VFR day 30-minute reserve requirements.
4Know 14 CFR Part 61 requirements for private pilot WSC certification (§61.109: 40 total hours, 20 dual, 10 solo, 3 cross-country) and Part 91 operational rules (§91.119 minimum safe altitudes, §91.155 VFR weather minimums).
5Study engine operating principles for Rotax 2-stroke (pre-mix oil ratios, cold seizure risks, EGT/CHT monitoring) and Rotax 4-stroke (912 series, dry-sump oil check procedures).

Frequently Asked Questions

What is the FAA PWS Knowledge Test?

The FAA PWS (Test Code: PWS) is the Private Pilot Knowledge Test for candidates seeking a Private Pilot Certificate with a Weight-Shift-Control (WSC trike) category rating under 14 CFR Part 61.

How many questions are on the official FAA PWS exam and what is the passing score?

The official exam contains 60 multiple-choice questions with a 2.5-hour (150 minutes) time limit. The passing score is 70% (at least 42 correct answers out of 60).

How does controlling a Weight-Shift-Control aircraft differ from a conventional airplane?

A weight-shift-control aircraft is controlled by shifting the center of gravity of the trike carriage relative to the wing. Pushing the control bar out moves the CG aft and increases pitch/angle of attack, while pulling the control bar in moves the CG forward and decreases pitch. Pushing the control bar to the right shifts the carriage CG left, initiating a left roll, which is opposite to conventional control stick movement.

What is a pitch tuck hazard in WSC aircraft?

A pitch tuck occurs when a weight-shift control wing encounters negative angle of attack or zero-g conditions. Because WSC flight relies on gravity loading the sail to maintain pendulum stability and shape, zero-g unloads the sail and CG control, potentially causing a violent nose-down tumble. Luff lines, sprogs, and reflex areas are designed into the wing to prevent tucks, but pilots must avoid zero-g maneuvers and pushing out in severe turbulence.