FREE Airframe Mechanic Assembly and Rigging Questions and Answers

Question 1

A technician is inspecting a properly tensioned turnbuckle in a primary flight control system and observes four threads are exposed between the barrel and the cable end fitting.
What is the correct course of action?

Accepted Answer

Replace the turnbuckle with one of a more appropriate length.

Answer

This is acceptable as long as the safety wire can be installed correctly.

Answer

Tighten the turnbuckle until no threads are exposed to maximize engagement.

Answer

Document the finding and re-inspect at the next 100-hour inspection.

Question 2

What is the primary reason that aircraft maintenance manuals provide a temperature/tension chart for rigging flight control cables?

Accepted Answer

To compensate for the different thermal expansion rates of the aluminum airframe and the steel cables.

Answer

To ensure the tensiometer is properly calibrated before use.

Answer

To prevent corrosion from forming between the cable strands.

Answer

To determine the correct size of safety wire to use on the turnbuckles.

Question 3

After an aileron has been repainted, it must be rebalanced. Which of the following is the most critical reason for this procedure?

Accepted Answer

To prevent the onset of high-frequency control surface flutter.

Answer

To ensure the new paint is properly cured and bonded to the surface.

Answer

To verify the correct range of motion for the control surface.

Answer

To reduce the amount of force the pilot must exert on the controls.

Question 4

Before checking the wing dihedral and incidence angles during a rigging check, what is the most critical preparatory step?

Accepted Answer

Leveling the aircraft both longitudinally and laterally according to the maintenance manual.

Answer

Ensuring the fuel tanks are completely full to establish a baseline weight.

Answer

Setting all flight controls and trim tabs to their neutral positions.

Answer

Retracting the landing gear and placing the aircraft on tail stands.

Question 5

During an inspection of a control cable passing over a pulley, a single broken wire is discovered. According to FAA AC 43.13-1B, what action is required?

Accepted Answer

The entire control cable assembly must be replaced.

Answer

The cable may remain in service if no more than three wires are broken.

Answer

Apply an approved lubricant and re-inspect after the next flight.

Answer

Repair the broken wire by wrapping it with safety wire.

Question 6

In aircraft assembly and maintenance, what is the primary function of a cotter pin when used with a castellated nut?

Accepted Answer

To act as a positive locking device to prevent the nut from loosening due to vibration.

Answer

To act as a washer to distribute the clamping force of the nut.

Answer

To provide a visual indication that the correct torque has been applied.

Answer

To allow for quick removal of the nut without tools.

A technician is inspecting a properly tensioned turnbuckle in a primary flight control system and observes four threads are exposed between the barrel and the cable end fitting.What is the correct course of action?

A technician is inspecting a properly tensioned turnbuckle in a primary flight control system and observes four threads are exposed between the barrel and the cable end fitting.
What is the correct course of action?