Aircraft 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 Aircraft Assembly and Rigging flashcards as text
On a light aircraft with a conventional landing gear, how is 'toe-in' on the main gear defined?
Answer: The leading edges of the main wheels point slightly inward toward the aircraft centerline when viewed from above
Toe-in means the front of each main wheel points slightly toward the aircraft centerline, reducing side-slip tendency during the ground roll.
When assembling a fabric-covered control surface, which material is used to reinforce the attachment area around hinge brackets to prevent tearing?
Answer: Reinforcing tape or patches of the same fabric, applied before the surface covering
Reinforcing tape or additional fabric patches are applied at hinge bracket locations before the finish covering is applied, distributing loads and preventing the covering from tearing.
A pulley bracket must be inspected for cracks before installation. Which non-destructive inspection method is most practical for an aluminum pulley bracket in a production environment?
Answer: Dye penetrant inspection
Dye penetrant inspection is practical for aluminum components because aluminum is non-ferromagnetic (ruling out magnetic particle) and the method reveals surface cracks cost-effectively.
Which of the following best describes 'geometric twist' in a wing?
Answer: A physical change in the chord line angle from root to tip, independent of airfoil shape change
Geometric (washout/wash-in) twist is a physical rotation of the entire wing section about the span axis, changing the angle of incidence from root to tip.
After replacing a control cable on a Cessna 172 elevator system, the technician must verify proper routing. Which publication is the primary reference?
Answer: Cessna 172 Maintenance Manual
The manufacturer's Maintenance Manual contains the approved cable routing diagrams, rigging specifications, and tension values specific to that aircraft model.
What is the minimum number of exposed threads that must show beyond a castle (castellated) nut after torquing, before installing a cotter pin?
Answer: At least one full thread must be visible beyond the nut face
FAA and manufacturer standards require at least one full thread to be visible beyond the castellated nut face to ensure the bolt is properly engaged and the cotter pin slot is accessible.
When rigging spoilers on a transport-category aircraft, the technician must verify that spoilers are:
Answer: Flush with the wing upper surface in the retracted position and do not droop below the wing contour
Spoilers must be rigged flush with the wing upper surface when retracted; any droop below the wing contour creates asymmetric drag and can affect roll and lift.