Ground Instructor Knowledge +
FOI Exam Prep 2025 Questions and
Answers
SU 1: Airplanes and Aerodynamics
When an airplane is forced into an accelerated stall at twice its normal stalling speed,
what is the approximate load factor? - ✔✔4 G's
SU 1: Airplanes and Aerodynamics
A sweptback wing has a tendency to stall at the ______ first and progress ________. -
✔✔wingtip; inward to the wing root
SU 1: Airplanes and Aerodynamics
Centrifugal force is greater than the horizontal component of lift in _________ turns -
✔✔skidding
SU 1: Airplanes and Aerodynamics
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,Centrifugal force is less than the horizontal component of lift in _________ turns -
✔✔slipping
SU 1: Airplanes and Aerodynamics
The quality of an aircraft that permits it to be operated easily and to withstand the
stresses imposed on it is the ___________ of the aircraft - ✔✔maneuverability
SU 1: Airplanes and Aerodynamics
The capability of an aircraft to respond to the pilot's inputs is its ___________ -
✔✔controllability
SU 1: Airplanes and Aerodynamics
The tendency of an aircraft to develop forces that restore it to its original condition is
known as its _________. - ✔✔stability
SU 1: Airplanes and Aerodynamics
Which type of flap creates the greatest change in pitching moment?
A. Plain
B. Split
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,C. Fowler - ✔✔C. Fowler
SU 1: Airplanes and Aerodynamics
An aircraft wing is designed to produce lift resulting from
A. negative air pressure below the wing's surface and positive air pressure above the
wing's surface
B. positive air pressure below the wing's surface and negative air pressure above the
wing's surface
C. a larger center of pressure above the wing's surface and a lower center of pressure
below the wing's surface - ✔✔B. positive air pressure below the wing's surface and
negative air pressure above the wing's surface
SU 1: Airplanes and Aerodynamics
During flight with zero angle of attack, the pressure along the upper surface of a wing
would be
A. equal to atmospheric pressure
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, B. less than atmospheric pressure
C. greater than atmospheric pressure - ✔✔B. less than atmospheric pressure
SU 1: Airplanes and Aerodynamics
Why does increasing speed also increase lift?
A. the increased velocity of the relative wind overcomes the increased drag
B. the increased impact of the relative wind on the airfoil's lower surface creates a
greater amount of air being deflected downward
C. the increased speed of the air passing over an airfoil's upper surface increases the
pressure, thus creating a greater pressure differential between the upper and lower
surface - ✔✔B. the increased impact of the relative wind on the airfoil's lower surface
creates a greater amount of air being deflected downward
SU 1: Airplanes and Aerodynamics
The resistance, or skin friction, due to the viscosity of the air as it passes along the
surface of a wing is called
A. form drag
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
FOI Exam Prep 2025 Questions and
Answers
SU 1: Airplanes and Aerodynamics
When an airplane is forced into an accelerated stall at twice its normal stalling speed,
what is the approximate load factor? - ✔✔4 G's
SU 1: Airplanes and Aerodynamics
A sweptback wing has a tendency to stall at the ______ first and progress ________. -
✔✔wingtip; inward to the wing root
SU 1: Airplanes and Aerodynamics
Centrifugal force is greater than the horizontal component of lift in _________ turns -
✔✔skidding
SU 1: Airplanes and Aerodynamics
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 1
,Centrifugal force is less than the horizontal component of lift in _________ turns -
✔✔slipping
SU 1: Airplanes and Aerodynamics
The quality of an aircraft that permits it to be operated easily and to withstand the
stresses imposed on it is the ___________ of the aircraft - ✔✔maneuverability
SU 1: Airplanes and Aerodynamics
The capability of an aircraft to respond to the pilot's inputs is its ___________ -
✔✔controllability
SU 1: Airplanes and Aerodynamics
The tendency of an aircraft to develop forces that restore it to its original condition is
known as its _________. - ✔✔stability
SU 1: Airplanes and Aerodynamics
Which type of flap creates the greatest change in pitching moment?
A. Plain
B. Split
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 2
,C. Fowler - ✔✔C. Fowler
SU 1: Airplanes and Aerodynamics
An aircraft wing is designed to produce lift resulting from
A. negative air pressure below the wing's surface and positive air pressure above the
wing's surface
B. positive air pressure below the wing's surface and negative air pressure above the
wing's surface
C. a larger center of pressure above the wing's surface and a lower center of pressure
below the wing's surface - ✔✔B. positive air pressure below the wing's surface and
negative air pressure above the wing's surface
SU 1: Airplanes and Aerodynamics
During flight with zero angle of attack, the pressure along the upper surface of a wing
would be
A. equal to atmospheric pressure
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 3
, B. less than atmospheric pressure
C. greater than atmospheric pressure - ✔✔B. less than atmospheric pressure
SU 1: Airplanes and Aerodynamics
Why does increasing speed also increase lift?
A. the increased velocity of the relative wind overcomes the increased drag
B. the increased impact of the relative wind on the airfoil's lower surface creates a
greater amount of air being deflected downward
C. the increased speed of the air passing over an airfoil's upper surface increases the
pressure, thus creating a greater pressure differential between the upper and lower
surface - ✔✔B. the increased impact of the relative wind on the airfoil's lower surface
creates a greater amount of air being deflected downward
SU 1: Airplanes and Aerodynamics
The resistance, or skin friction, due to the viscosity of the air as it passes along the
surface of a wing is called
A. form drag
COPYRIGHT © 2025 BY OLIVIA WEST, ALL RIGHTS RESERVED 4
