Aircraft maintenance Exam Questions
and Answers 100% Pass
What are the 4 forces acting on a aircraft? - ✔✔Lift, thrust, drag and weight
To continue at a constant altitude an aircraft must produce a force of lift __________ to
its own weight. - ✔✔Equal
For an aircraft to take off or climb it must produce a lift force ________ than it's own
weight. - ✔✔Greater
How does the aerofoil shape of the wing create lift on a aircraft? - ✔✔Air flows faster
over the top surface of the wing than it does underneath which creates a pressure
difference causing upward force on the underside of the wing where there is a higher
pressure.
Weight acts at what point on the aircraft no matter what altitude it assumes? -
✔✔Through the centre of gravity
What is thrust and where does it act on an aircraft? - ✔✔Thrust is the propelling force
produced by the aircraft engine(s) and acts parallel to the aircrafts line of flight.
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,What is drag? - ✔✔Drag is the resistive force of the aircraft through the air.
What are the three main categories of drag? - ✔✔Form drag, Skin Friction and Induced
drag.
What causes form drag? - ✔✔This is cause by the aircrafts shape. The air becomes
disrupted and resistance to movement is increased.
What causes skin friction? - ✔✔This is caused by the air passing over the aircraft.
Energy that would be used to propel the aircraft is lost in the form of heat.
What causes induced drag? - ✔✔This is a side effect of producing lift, as the air is forced
to moved around the aerofoil it resists the displacement.
What is the function of the primary flight control system? - ✔✔To control the aircraft
safely during flight.
What is the primary flight control system made up of? - ✔✔Ailerons, Elevator and
Rudder.
What is the function of the secondary flight control system? - ✔✔Improves the
performance characteristics of the airplane or relieve the pilot of excessive control
forces.
What is the secondary flight control system made up of? - ✔✔Wing flaps, leading edge
devices, spoilers and trim tabs.
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,What are the 3 axis of flight? - ✔✔Vertical (Normal), Lateral, Longitudinal
Yaw is the movement about which axis? - ✔✔Vertical (Normal)
Pitch is the movement about which axis? - ✔✔Lateral
Roll is the movement about which axis? - ✔✔Longitudinal.
What is an aileron and where is it located? - ✔✔A hinged Control surface, which it is
located on the trailing edge of the wing
How does an aileron cause roll? - ✔✔A linkage from the pilots control column cause the
aileron on one wing to move up while simultaneously causing the other aileron to move
down which creates roll around the longitudinal axis.
Where are the elevators located, and what movement do they cause? - ✔✔On the
horizontal stabiliser of the tail unit. Causes pitch around the lateral axis.
How is the rudder operated and what movement does it cause? - ✔✔The rudder is
operated by foot pedals, and causes yaw around the vertical (normal) axis.
What are flaps? - ✔✔Moveable surfaces located on the inboard trailing edge of the
wing. Usually larger in surface area than ailerons and both sides are activated together
so no roll is produced.
What do flaps do? - ✔✔Increase both the lift and drag of the wing and increase the
angle of attack across the wing/flap section. They are used primarily for landing.
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, What are 3 reasons flaps are used on aircraft? - ✔✔1. They permit a lower landing
speed, which decreases the required landing distance.
2. They permit a comparatively steep angle of decent without and increase in speed
which allows the aircraft to clear obstacles when approaching a small runway.
3. They can be used to shorten take off distance and provide a steeper climb path.
What are the 4 main types of flaps? - ✔✔Plain, split, fowler and slotted
What two types of flap increase the lift of a wing but greatly increase drag and so are
not normally used in take-off as the extra drag reduces acceleration. - ✔✔Plain and
split.
What types of flaps produce lift in excess of drag and can be used in take-off? -
✔✔Slotted flaps (includes fowler and zap)
What is a trim tab? - ✔✔A small adjustable hinged surface on the trailing edge of the
aileron, rudder or elevator control surfaces. They enable the pilot to release manual
pressure on the primary control surfaces.
What is the camber of a wing? - ✔✔The shape or curvature of the wing.
Where are Krueger flaps located and how do they increase lift? - ✔✔They are located on
the bottom surface on the wing on the leading edge. They increase lift by increasing the
camber of the wing when they are deployed.
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and Answers 100% Pass
What are the 4 forces acting on a aircraft? - ✔✔Lift, thrust, drag and weight
To continue at a constant altitude an aircraft must produce a force of lift __________ to
its own weight. - ✔✔Equal
For an aircraft to take off or climb it must produce a lift force ________ than it's own
weight. - ✔✔Greater
How does the aerofoil shape of the wing create lift on a aircraft? - ✔✔Air flows faster
over the top surface of the wing than it does underneath which creates a pressure
difference causing upward force on the underside of the wing where there is a higher
pressure.
Weight acts at what point on the aircraft no matter what altitude it assumes? -
✔✔Through the centre of gravity
What is thrust and where does it act on an aircraft? - ✔✔Thrust is the propelling force
produced by the aircraft engine(s) and acts parallel to the aircrafts line of flight.
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,What is drag? - ✔✔Drag is the resistive force of the aircraft through the air.
What are the three main categories of drag? - ✔✔Form drag, Skin Friction and Induced
drag.
What causes form drag? - ✔✔This is cause by the aircrafts shape. The air becomes
disrupted and resistance to movement is increased.
What causes skin friction? - ✔✔This is caused by the air passing over the aircraft.
Energy that would be used to propel the aircraft is lost in the form of heat.
What causes induced drag? - ✔✔This is a side effect of producing lift, as the air is forced
to moved around the aerofoil it resists the displacement.
What is the function of the primary flight control system? - ✔✔To control the aircraft
safely during flight.
What is the primary flight control system made up of? - ✔✔Ailerons, Elevator and
Rudder.
What is the function of the secondary flight control system? - ✔✔Improves the
performance characteristics of the airplane or relieve the pilot of excessive control
forces.
What is the secondary flight control system made up of? - ✔✔Wing flaps, leading edge
devices, spoilers and trim tabs.
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,What are the 3 axis of flight? - ✔✔Vertical (Normal), Lateral, Longitudinal
Yaw is the movement about which axis? - ✔✔Vertical (Normal)
Pitch is the movement about which axis? - ✔✔Lateral
Roll is the movement about which axis? - ✔✔Longitudinal.
What is an aileron and where is it located? - ✔✔A hinged Control surface, which it is
located on the trailing edge of the wing
How does an aileron cause roll? - ✔✔A linkage from the pilots control column cause the
aileron on one wing to move up while simultaneously causing the other aileron to move
down which creates roll around the longitudinal axis.
Where are the elevators located, and what movement do they cause? - ✔✔On the
horizontal stabiliser of the tail unit. Causes pitch around the lateral axis.
How is the rudder operated and what movement does it cause? - ✔✔The rudder is
operated by foot pedals, and causes yaw around the vertical (normal) axis.
What are flaps? - ✔✔Moveable surfaces located on the inboard trailing edge of the
wing. Usually larger in surface area than ailerons and both sides are activated together
so no roll is produced.
What do flaps do? - ✔✔Increase both the lift and drag of the wing and increase the
angle of attack across the wing/flap section. They are used primarily for landing.
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, What are 3 reasons flaps are used on aircraft? - ✔✔1. They permit a lower landing
speed, which decreases the required landing distance.
2. They permit a comparatively steep angle of decent without and increase in speed
which allows the aircraft to clear obstacles when approaching a small runway.
3. They can be used to shorten take off distance and provide a steeper climb path.
What are the 4 main types of flaps? - ✔✔Plain, split, fowler and slotted
What two types of flap increase the lift of a wing but greatly increase drag and so are
not normally used in take-off as the extra drag reduces acceleration. - ✔✔Plain and
split.
What types of flaps produce lift in excess of drag and can be used in take-off? -
✔✔Slotted flaps (includes fowler and zap)
What is a trim tab? - ✔✔A small adjustable hinged surface on the trailing edge of the
aileron, rudder or elevator control surfaces. They enable the pilot to release manual
pressure on the primary control surfaces.
What is the camber of a wing? - ✔✔The shape or curvature of the wing.
Where are Krueger flaps located and how do they increase lift? - ✔✔They are located on
the bottom surface on the wing on the leading edge. They increase lift by increasing the
camber of the wing when they are deployed.
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