Aircraft flight control trim systems must be designed and installed so that the

Why is it generally necessary to jack an aircraft indoors for weighing?

Which statement is correct concerning torque effect on helicopters?

The angle of incidence is that acute angle formed by

In a hovering helicopter equipped with a tail rotor, directional control is maintained by

If a pilot reports that an airplane flies left wing heavy, this condition may be corrected by

An airplane which has good longitudinal stability should have a minimum tendency to

The purpose of spring tabs or servo tabs is to

A reduction in anti-torque thrust will cause the

Stability about the axis which runs parallel to the line of flight is referred to as

Where is the buttock line or buttline of an aircraft

If the vertical fin of a single-engine, propeller- driven airplane is rigged properly, it will generally be parallel to

How are changes in direction of a control cable accomplished?

What is the smallest size cable that may be used in aircraft primary control systems?

Which statement concerning the 100-hour inspection of an airplane equipped with a push-pull tube-type control system is true?

When the lift of an airfoil increases, the drag will

If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be

Where does the breakage of control cable wires occur most frequently?

If control cables are adjusted properly and the control surfaces tend to vibrate, the probable cause is

Other than the manufacturer maintenance manual what other document could be used to determine the primary flight control surface deflection for an imported aircraft that is reassembled after shipment?

The angle of incidence of an airplane at rest

What nondestructive checking method is normally used to ensure that the correct amount of swaging has taken place when installing swaged-type terminals on aircraft control cable?

What is the purpose of the free-wheeling unit in a helicopter drive system?

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

When inspecting a control cable turnbuckle for proper installation, determine that

The vertical flight of a helicopter is controlled by

Movement of the cockpit control toward the nosedown position during a ground operational check of the elevator trim tab system will cause the trailing edge of the trim tab to move in which direction?

As the angle of attack of an airfoil increases, the center of pressure will

Main rotor blades that do not cone by the same amount during rotation are said to be out of

Which should be accomplished before jacking an aircraft?

The acute angle formed by the chord line of a wing and the relative wind is known as the

The auxiliary (tail) rotor of a helicopter permits the pilot to compensate for and/or accomplish which of the following?

When a fiber or nylon insert-type, self-locking nut can be threaded on a bolt or stud through the insert with only the fingers, it should be

The universal propeller protractor can be used to measure

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

One purpose of the freewheeling unit required between the engine and the helicopter transmission is to

The cable-operated control system of an all-metal aircraft, not incorporating a temperature compensating device, has been rigged to the correct tension in a heated hangar. If the aircraft is operated in very cold weather, the cable tension will

A universal propeller protractor used to measure the degrees of aileron travel should be zeroed

Excessive wear on both of the sides of a control cable pulley groove is evidence of

The correct dihedral angle can be determined by

An airplane is controlled directionally about its vertical axis by the

Rigging and alignment checks should not be undertaken in the open; however, if this cannot be avoided, the aircraft should be positioned

The vast majority of aircraft control cables are terminated with swaged terminals, that must be

What physical factors are involved in the aspect ratio of airplane wings?

What type of flap system increase the wing area and changes the wing camber?

Very often, repairs to a control surface require static rebalancing of the control surface. Generally, flight control balance condition may be determined by

Fairleads should never deflect the alignment of a cable more than

Proper wing twist in a sheet metal constructed wing can usually be checked by utilizing

The elevators of a conventional airplane are used to provide rotation about the

When used in close proximity to magnetic compasses, cotter pins are made of what material?

An airplane’s center of lift is usually located aft of its center of gravity

The purpose of wing slats is to

Movement about the longitudinal axis (roll) in a helicopter is affected by movement of the

A tension regulator in the flight control cable system of a large all-metal aircraft is used primarily to

The purpose of the vertical fin is to provide

The primary purpose of stall strips is to

If 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?

Where would you find precise information to perform a symmetry alignment check for a particular aircraft?

Wing dihedral, a rigging consideration on most airplanes of conventional design, contributes most to stability of the airplane about its

A helicopter in forward flight, cruise configuration, changes direction by

With which system is differential control associated?

Movement about the lateral axis (pitch) in a helicopter is effected by movement of the

Which is an acceptable safety device for a castle nut when installed on secondary structures?

The purpose in checking main rotor blade tracking is to determine the

An airplane that has a tendency to gradually increase a pitching moment that has been set into motion has

Improper rigging of the elevator trim tab system will affect the balance of the airplane about its

If a single-rotor helicopter is in forward horizontal flight, the angle of attack of the advancing blade is

Buffeting is the intermittent application of forces to a part of an airplane. It is caused by

The dihedral angle of a wing may be measured by placing a straightedge and level protractor on the

Where is fuselage station No. 137 located?

Washing-in the left wing of a monoplane, for purposes of rigging corrections after flight test, will have what effect on the lift and drag of that wing?

During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause

In rotorcraft external-loading, the ideal location of the cargo release is where the line of action passes

If the control stick of an aircraft with properly rigged flight controls is moved rearward and to the left, the right aileron will move

Movement of an airplane along its lateral axis (roll) is also movement

Differential control on an aileron system means that

After repairing or re-covering a rudder, the surface should be rebalanced

The chord of a wing is measured from