Assembly and Rigging Flashcards
7 cards from real Airframe Mechanic Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Assembly and Rigging flashcards as text
What effect does temperature have on control cable tension in an aircraft?
Answer: Higher temperatures decrease cable tension as the cable expands and the structure expands more
As temperature rises, both the cable and the airframe expand, but typically the aluminum airframe expands more than the steel cable, reducing cable tension.
A helicopter tail rotor pitch change link is found to be bent. The correct action is to:
Answer: Replace the link with a serviceable part
Flight control components that are bent must be replaced; straightening is not an approved repair for flight-critical linkages.
When assembling a modular aircraft fuselage, what is typically used to ensure proper alignment of major structural assemblies before final fastener installation?
Answer: Alignment fixtures or assembly jigs specified by the manufacturer
Manufacturer-specified assembly jigs and fixtures ensure that major structural components are held in the correct position and alignment during assembly.
The term 'incidence' as applied to a fixed-wing aircraft refers to:
Answer: The angle between the wing chord line and the horizontal datum of the aircraft
Wing incidence (rigging incidence) is the angle between the wing chord line and the aircraft's longitudinal axis (horizontal datum).
Excessive friction (stiffness) in a flight control system is MOST dangerous because it:
Answer: Masks control feedback and can prevent the pilot from detecting aerodynamic loads
High friction masks aerodynamic loads (stick forces) and may prevent the pilot from feeling control surface buffet or overload, reducing situational awareness.
What is the maximum number of turnbuckle threads that should be exposed outside a turnbuckle barrel after final rigging?
Answer: No more than three threads
No more than three threads of a turnbuckle terminal should be exposed (visible outside the barrel) after rigging to ensure adequate thread engagement.
During a rigging check, the rudder is found to be displaced 3° left of center when the rudder pedals are centered. The FIRST corrective action should be to:
Answer: Check and equalize the tension in both rudder cables
Unequal rudder cable tension is the most common cause of a displaced control surface with centered pedals, and equalizing tension is the first step.