Airframe Mechanic Certification Assembly and Rigging 5

Question 1

What effect does temperature have on control cable tension in an aircraft?

Accepted Answer

Higher temperatures decrease cable tension as the cable expands and the structure expands more

Answer

As temperature rises, both the cable and the airframe expand, but typically the aluminum airframe expands more than the steel cable, reducing cable tension.

Question 2

A helicopter tail rotor pitch change link is found to be bent. The correct action is to:

Accepted Answer

Replace the link with a serviceable part

Answer

Flight control components that are bent must be replaced; straightening is not an approved repair for flight-critical linkages.

Question 3

When assembling a modular aircraft fuselage, what is typically used to ensure proper alignment of major structural assemblies before final fastener installation?

Accepted Answer

Alignment fixtures or assembly jigs specified by the manufacturer

Answer

Manufacturer-specified assembly jigs and fixtures ensure that major structural components are held in the correct position and alignment during assembly.

Question 4

The term 'incidence' as applied to a fixed-wing aircraft refers to:

Accepted Answer

The angle between the wing chord line and the horizontal datum of the aircraft

Answer

Wing incidence (rigging incidence) is the angle between the wing chord line and the aircraft's longitudinal axis (horizontal datum).

Question 5

Excessive friction (stiffness) in a flight control system is MOST dangerous because it:

Accepted Answer

Masks control feedback and can prevent the pilot from detecting aerodynamic loads

Answer

High friction masks aerodynamic loads (stick forces) and may prevent the pilot from feeling control surface buffet or overload, reducing situational awareness.

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Assembly and Rigging 5