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Key Facts: GACA PPL Theory Exam

100

Practice Questions

OpenExamPrep

75%

Pass Score

Official Guidelines

2.0 hours

Time Limit

Exam Rules

Saudi GACA Private Pilot Licence (PPL) Theory Exam prep course featuring 100 high-quality practice questions and detailed explanations.

Sample GACA PPL Theory Practice Questions

Try these sample questions to review concepts for the GACA PPL Theory exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which of the following describes the relationship between lift and weight in unaccelerated level flight?
A.Lift is greater than weight.
B.Lift is less than weight.
C.Lift equals weight.
D.Lift is independent of weight.
Explanation: In unaccelerated level flight, an aircraft is neither gaining nor losing altitude, and its vertical acceleration is zero. According to Newton's first law, for vertical equilibrium, the upward force (lift) must exactly balance the downward force (weight).
2According to Bernoulli's Principle, an increase in the speed of a fluid results in:
A.A decrease in the fluid's dynamic pressure.
B.An increase in the fluid's temperature.
C.A decrease in the fluid's static pressure.
D.An increase in the fluid's static pressure.
Explanation: Bernoulli's Principle states that for an incompressible flow, an increase in the fluid's speed (kinetic energy) must be accompanied by a decrease in its static pressure (potential energy) to conserve total energy. This principle is fundamental to how an airfoil generates lift.
3What is the primary purpose of ailerons on an aircraft?
A.To increase lift during takeoff and landing.
B.To control yaw about the vertical axis.
C.To control roll about the longitudinal axis.
D.To control pitch about the lateral axis.
Explanation: Ailerons are movable control surfaces located on the trailing edge of the wings. They work differentially (one goes up, the other down) to create an imbalance of lift, causing the aircraft to roll around its longitudinal axis.
4What is the critical angle of attack?
A.The angle of attack at which parasite drag is minimized.
B.The angle of attack for best rate of climb.
C.The angle of attack at which an airfoil produces maximum lift coefficient.
D.The angle of attack at which the aircraft stalls.
Explanation: The critical angle of attack is the specific angle beyond which the airflow separates from the upper surface of the wing, leading to a sudden loss of lift and an increase in drag. This is the angle at which the wing generates its maximum lift coefficient, and exceeding it results in a stall.
5Induced drag is a byproduct of:
A.Engine thrust.
B.Wing surface friction.
C.Lift production.
D.Aircraft speed.
Explanation: Induced drag is an inevitable consequence of lift generation. It is created by the wingtip vortices and the downward deflection of air (downwash) behind the wing, which changes the effective angle of attack and tilts the total aerodynamic force rearward.
6Which factor primarily causes an aircraft to stall?
A.Excessive gross weight.
B.Sudden loss of engine power.
C.Exceeding the critical angle of attack.
D.Insufficient airspeed.
Explanation: A stall is always caused by exceeding the wing's critical angle of attack, regardless of airspeed, attitude, or weight. When the critical angle is exceeded, airflow separates from the upper surface of the wing, leading to a rapid decrease in lift.
7What effect does extending flaps have on an aircraft's wing?
A.Decreases both lift and drag.
B.Increases lift and decreases drag.
C.Decreases lift and increases drag.
D.Increases both lift and drag.
Explanation: Flaps increase the camber and often the effective surface area of the wing. This increases the wing's lift coefficient, allowing the aircraft to fly at lower airspeeds or higher angles of attack without stalling. However, this also significantly increases drag, which is desirable for landing approaches.
8An increase in density altitude will typically result in:
A.Increased engine efficiency.
B.No change in aircraft performance.
C.Increased aircraft performance.
D.Decreased aircraft performance.
Explanation: Density altitude is pressure altitude corrected for non-standard temperature. Higher density altitude means less dense air, which reduces engine power output, propeller efficiency, and wing lift capabilities. This leads to longer takeoff rolls, reduced climb rates, and higher true airspeeds for a given indicated airspeed.
9What is the phenomenon known as 'adverse yaw'?
A.The tendency of an aircraft to yaw in the opposite direction of a turn during initial roll input.
B.The yawing motion that occurs when an aircraft encounters wingtip vortices.
C.The tendency of an aircraft to pitch up during a high-speed turn.
D.An unintended yawing moment caused by rudder deflection.
Explanation: Adverse yaw occurs because the aileron deflected downward to increase lift on one wing also increases drag on that wing. The opposite aileron, deflected upward, decreases drag. This differential drag creates a yawing moment in the opposite direction of the desired turn.
10Load factor in a turn is primarily dependent on which two factors?
A.Aircraft weight and engine thrust.
B.Wing area and aspect ratio.
C.Bank angle and true airspeed.
D.Atmospheric pressure and temperature.
Explanation: Load factor (G-force) in a level turn is dependent on the bank angle. For a given bank angle, a higher true airspeed requires a higher load factor to maintain altitude. The formula is Load Factor = 1 / cos(bank angle).

About the GACA PPL Theory Exam

GACAR Part 61 Private Pilot Licence (PPL) theory exam tests fundamental aviation knowledge including basic aerodynamics, GACA rules of the air, private pilot flight constraints, navigation, and emergency checklist procedures.

Exam sponsor: General Authority of Civil Aviation (GACA), Saudi Arabia. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Multiple-choice computerised exam administered by General Authority of Civil Aviation (GACA), Saudi Arabia.

Time Limit

2.0 hours

Passing Score

75%

Exam / Certification Fees

300 SAR

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Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

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Preparing for the GACA PPL Theory Exam

What You Need to Know

  • Passing score: 75%
  • Assessment: Multiple-choice computerised exam administered by General Authority of Civil Aviation (GACA), Saudi Arabia.
  • Time limit: 2.0 hours
  • Exam / certification fees: 300 SAR Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
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GACA PPL Theory: Suggested Study Strategy

1Carefully study all regulatory and legislative requirements.
2Practice sample calculations and review real-world scenario items.
3Review the explanations for all incorrect practice questions to build core conceptual clarity.

Frequently Asked Questions

What is the passing score for GACA PPL Theory?

The passing score is 75%.

Who administers the GACA PPL Theory exam?

The exam is administered by the General Authority of Civil Aviation (GACA), Saudi Arabia.