Airframe Mechanic Certification Flight Control Systems 3

Question 1

What is the maximum allowable turnbuckle barrel thread exposure on a properly rigged flight control cable?

Accepted Answer

3 threads

Answer

FAA guidelines specify no more than three threads of a turnbuckle barrel may be exposed on either side after rigging is complete.

Question 2

Frise ailerons are designed primarily to:

Accepted Answer

Reduce adverse yaw by creating drag on the rising wing

Answer

The Frise aileron's leading edge protrudes below the wing surface when raised, creating parasite drag that counters adverse yaw.

Question 3

Which document specifies the required flight control surface travel limits for a certificated aircraft?

Accepted Answer

The applicable Aircraft Maintenance Manual (AMM)

Answer

The Aircraft Maintenance Manual contains model-specific rigging data, including required control surface travel limits and tolerances.

Question 4

A spoiler used as a roll control device operates by:

Accepted Answer

Deflecting upward on the high wing to reduce lift and increase drag

Answer

Roll spoilers deploy on the high (upgoing) wing, destroying lift and increasing drag to assist or replace aileron roll control.

Question 5

What type of rig check uses a protractor or inclinometer placed on the control surface to measure deflection angles?

Accepted Answer

Travel check

Answer

A travel check uses a protractor or rigging board placed on the control surface to measure deflection in degrees against AMM specifications.

Airframe Mechanic Certification Practice Test