Airframe Mechanic Certification Aircraft Assembly and Rigging 2

Question 1

When rigging a conventional (non-fly-by-wire) aileron control system, what is the correct method to check for cable tension?

Accepted Answer

Use a tensiometer and compare readings to the manufacturer's temperature-tension chart

Answer

A tensiometer is used to measure cable tension, and readings must be corrected using the manufacturer's temperature-tension chart because tension varies with ambient temperature.

Question 2

Which type of turnbuckle safetying method is approved for primary flight control cables?

Accepted Answer

Wire-wrapping (pigtail) method or clip-locking method, per manufacturer approval

Answer

Both the double-wrap wire method and clip-locking turnbuckle assemblies are FAA-approved; the applicable method depends on the turnbuckle design and manufacturer data.

Question 3

During horizontal tail assembly, the stabilizer incidence angle is found to be 0.5° more than specified. What is the most appropriate corrective action?

Accepted Answer

Adjust the stabilizer attach bolts to shim the leading edge up or down as needed

Answer

Small incidence errors are corrected by adding or removing shims at the stabilizer attachment points to achieve the manufacturer's specified angle.

Question 4

What does 'wash-in' mean when applied to a fixed-wing aircraft?

Accepted Answer

Increasing the angle of incidence from root to tip on one wing

Answer

Wash-in is a wing twist that increases the angle of incidence toward the wingtip, causing the tip to stall before the root and affecting roll characteristics.

Question 5

A bellcrank in a flight control system is used primarily to:

Accepted Answer

Change the direction of control cable or rod movement

Answer

A bellcrank converts or redirects the motion of cables or rods, allowing control forces to be transmitted around corners or change direction within the airframe.

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Aircraft Assembly and Rigging 2