SYSTEMS 4 (mon-tues)
In performing a splice in a control cable the minimum space between swages should be? 3/4 inch 1 inch 1/2 inch
1/2 inch
What is the smallest size cable that may be used in aircraft primary control systems? 1/4 inch 1/8 inch 5/16 inch
1/8 inch
What precautions must be taken in the hoisting of an aircraft? A) Both are correct B) If the aircraft is to be lifted by a strap placed around the fuselage, it should be placed at a reinforced position such as at a bulkhead or former C) Lift from points designated by the manufacturer
A) Both are correct
Buffeting is the intermittent application of forces to a part of an airplane. It is caused by? Incorrect rigging of flaps. An unsteady flow from turbulence No answer text provided. Incorrect rigging of ailerons
An unsteady flow from turbulence
The purpose of spring tabs or servo tabs is to? Make in-flight trim adjustments possible Contribute to the static balance of the control surface Assist the pilot in moving the control surfaces
Assist the pilot in moving the control surfaces
Where does the breakage of control cable wires occur most frequently? Breakage sites are unpredictable and usually occur randomly anywhere along the length of a cable Breakage usually occurs where cables are swaged to turnbuckle and ball terminals Breakage usually occurs where cables pass over pulleys and through fairleads
Breakage usually occurs where cables pass over pulleys and through fairleads
How may you determine that an aircraft is level? By measuring from wing tips to the ground By using the "golf club pendulum" method By using a plumb bob or spirit level
By using a plumb bob or spirit level
What is the advantage of the calculation method of balancing or re-balancing control surfaces? Can be done without removing the surface from the aircraft The calculation method is the most accurate method You are not required to be an A&P
Can be done without removing the surface from the aircraft
As the angle of attack is increased the center of lift moves_____ and drag is ____? Forward, increases Aft, decreases Aft, increases
Forward, increases
The dihedral angle of a wing may be measured by placing a straightedge and level protractor on the? Wing chord Front spar Wing root
Front spar
The major assemblies of a fixed-wing airframe are? Wings, empennage, engines, propellers and fuselage Fuselage, wings stabilizers, flight control surfaces and landing gear Wings, fuselage, empennage, and powerplant
Fuselage, wings stabilizers, flight control surfaces and landing gear
What tools may be used to check an aircraft angle of incidence? Micrometer or calipers Incidence board and/or a universal propeller protractor Protractor and tape measure
Incidence board and/or a universal propeller protractor
During installation of bolts in the attaching parts of aircraft structures, the head of the bolt? Should be drilled so it can be safely wired in place Is placed up, forward, or outboard wherever possible Can be placed in any position desired
Is placed up, forward, or outboard wherever possible
Why is it generally necessary to jack an aircraft indoors for weighing? So aircraft may be placed in a level position So weighing scales may be calibrated to 0 pounds So that air currents do not destabilize the scale
So that air currents do not destabilize the scales.
The common types of wing flaps are? Split, plain, slotted and fowler trailing edge flaps Leading edge, training edge, part spar and full span Kruger flaps, slots, slots and spoilers
Split, plain, slotted and fowler trailing edge flaps
The purpose of a control rod is to transmit? Straight or push-pull forces Turning or twisting forces Twisting or straight forces
Straight or push-pull forces
the travel of an airplane's controls is correct but the cables are rigged exceptionally tight, what probable effect will this have when flying the airplane? The airplane will be heavy on the controls The airplane will tend to fall off on one wing The pilot will be unable to fly the airplane hands-off
The airplane will be heavy on the controls.
Define the "Length of lay".? The distance parallel to the axis of the cable in which a strand makes one complete turn about that axis. The distance it takes for one strand to make two turns around the cable in 1 inch No answer text provided.
The distance parallel to the axis of the cable in which a strand makes one complete turn about that axis.
What is stagger to a biplane? The characteristic of a biplane that allows it to not be able to taxi in a straight line The difference in incidence between the top and bottom wings The longitudinal difference between the leading edge of the top and bottom wings
The longitudinal difference between the leading edge of the top and bottom wings
The difference in alignment checks and rigging checks is that alignment checks? The position of flight control stops while rigging checks the condition of the moving parts of the flight control mechanisms The flight control position by use of sight, plumb bobs and transits, while rigging checks the flight control position by use of rulers and protractors The position of fixed surfaces, while rigging checks moving controls
The position of fixed surfaces, while rigging checks moving controls
When inspecting a control cable turnbuckle for proper installation, determine that? The safety wire ends are wrapped a minimum of four turns around the terminal end shanks The terminal end threads are visible through the safety hole in the barrel No more than four threads are exposed on either side of the turnbuckle barrel
The safety wire ends are wrapped a minimum of four turns around the terminal end shanks
After repairing or re-covering a rudder, the surface should be re-balanced? In its normal flight position To its spanwise axis To manufacturer's specifications
To manufacturer's specifications
When a control surface is mounted on the balance stand and the trailing edge is below the horizontal position, it indicates • overbalance •underbalance
Underbalance
If the pilot moves the stick aft and to the left in an airplane, the right aileron will go? Up and the elevator will go down Down and the elevator will go up Up and the elevator will go up
Up and the elevator will go up
When a component is installed at WL 73, BL 10R, and FS 105, it means the component is installed at? Water line 73" up, butt line 10" right and fuselage station 105" aft Web longeron #73, base line 10 right and frame stringer #105 Water line 73" down, butt line 10" right and the fuselage station 105" forward
Water line 73" down, butt line 10" right and the fuselage station 105" forward
Where would you find precise information to perform a symmetry alignment check for a particular aircraft? Aircraft service or maintenance manual Manufactures service bulletins Aircraft Specification or Type Certificate Data Sheet
aircraft service or maintenance manual
If the right wing of a monoplane is improperly rigged to a greater angle of incidence than designated in the manufacturer's specifications, it will cause? The aircraft to be off balance both laterally and directionally The aircraft to by out of lateral balance only The right wing to have both an increased lift and a decreased drag
airplane to be off balance both laterally and directionally
The acute angle formed by the chord line of a wing and the relative wind is known as the? Angle of incidence Angle of attack Longitudinal dihedral angle
angle of attack
The vast majority of aircraft control cables are terminated with swaged terminals, that must be? Corrosion treated to show compliance with the manufacturer's requirements after the swaging operation. Pull test to show compliance with the manufacturer's requirements after the swaging operation Check with a go-no-go gauge before and after, to show compliance with the manufacturer's requirements after the swaging operation.
checked with a go-no-go gauge before and after, to show compliance with the manufacturer's requirements after the swaging operation.
The universal propeller protractor can be used to measure? Propeller track Degrees of flap travel Aspect ratio of a wing
degrees of flap travel
Placing a piece of cloth around a stainless steel control cable and running it back and forth over the length of the cable is generally a satisfactory method of? c. Inspecting for ware or corrosion Applying par-al-ketone Inspecting for broken wires
inspecting for broken wires
Improper rigging of the elevator trim tab system will affect the balance of the airplane about its? Vertical axis Lateral axis Longitudinal axis
lateral axis
An airplane which has good longitudinal stability should have a minimum tendency to? Pitch Yaw Roll
pitch
What loads do the flying wires carry on a biplane? Negative G loads Positive G loads Flying wires do not carry loads, they are for rigging purposes only
positive G loads
What physical factors are involved in the aspect ratio of airplane wings? Span and chord Thickness and chord Dihedral and angle of attack
span and chord
Very often, repairs to a control surface require static re-balancing of the control surface. Generally, flight control balance condition may be determined by? Checking for equal distribution of weight through the control surface Suspending the control surface from its leading edge in the stream line position and checking weight distribution The behavior of the trailing edge when the surface is suspended from its hinge points
the behavior of the trailing edge when the surface is suspended from its hinge points.
If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be? 70 Percent of the full rated strength of the cable 80 percent of the full rated strength of the cable The full rated strength of the cable
the full rated strength of the cable
Main rotor blades that do not cone by the same amount during rotation are said to be out of? Collective pitch Track Balance
track
Rigging and alignment checks should not be undertaken in the open; however, if this cannot be avoided, the aircraft should be positioned? Facing any direction since it makes no difference if the wind is steady (not gusting). With the nose into the wind Obliquely into the wind
with the nose into the wind
What could cause a flight control to be out of balance? Damaged, Out of rig, Altered Repaired, Repainted, Altered Damaged, Spot painted, Modified
• Repaired, Repainted, Altered
