FAA A&P Airframes Oral and Practical Test
2026 Questions And Correct Answers Graded A+
What mechanism is most commonly used to compensate for the torque produced
by the main rotor of a helicopter?
The tail (or anti-torque) rotor.
How is the amont of thrust produced by the tail rotor controled?
By moving the foot pedals
Why should control surfaces be locked when an aircraft is parked?
To prevent damage from the wind.
What is the major damage to aluminum structures that is caused by exposure to the
weather?
Corrosion.
Name several methods for forming sheet metal
Bending or folding, streching, shrinking, bumping, and crimping.
,What are the demensions of a properly formed rivet head?
The head should be 1 1/2 the diameter in width and 1/2 the shank diameter in
height.
Describe the markings found on the heads of A, B, D, AD and DD rivets.
A: Plain
B: Cross
D: Raised Dot
AD: Dimple
DD: Double Dash
What happens to the stem of a self plugging (friction lock) rivet when the rivet is
installed?
The stem is pulled until it snaps of and the remaining part is trimmed flush with the
head.
Name at least three types of self plugging mechanical lock rivets
CherryMAX, CherryLOCK, OYLMPIC-LOC, and HuckLok rivets
What is the difference between the tools required to pull a CherryLOCK rivet and
a CherryMAX rivet?
CherryLOCK rivet require a a tool for each different size and head shape, one
pulling tool willset any size CherryMAX rivet.
, Which of the five stresses is the most common cause of rivet failure?
Shear
Ifa 2024 rivet must be replaced with a 2117 rivet, how do you determine the size to
be used?
For 5/32 or smaller diameter us the next larger size 2117 rivet, assuming that the
edge distance and spacing meet the minimum requirements.
Describe the process for determining the total length ofa solid rivet for a particular
installation.
Add the grip length plus 1 1/2 the diameter of the rivet.
What minimum edge distance and spacing should be used for a single row of
protruding head rivets?
Not less than two rivet diameters from the edge and not less than three rivet
diameters apart.
How can a mechanic determine wether the countersink for a flush rivet should be
dimpled or drilled
By the thickness of the top sheet; thin sheets are dimpled while thick sheets may be
countersunk.
2026 Questions And Correct Answers Graded A+
What mechanism is most commonly used to compensate for the torque produced
by the main rotor of a helicopter?
The tail (or anti-torque) rotor.
How is the amont of thrust produced by the tail rotor controled?
By moving the foot pedals
Why should control surfaces be locked when an aircraft is parked?
To prevent damage from the wind.
What is the major damage to aluminum structures that is caused by exposure to the
weather?
Corrosion.
Name several methods for forming sheet metal
Bending or folding, streching, shrinking, bumping, and crimping.
,What are the demensions of a properly formed rivet head?
The head should be 1 1/2 the diameter in width and 1/2 the shank diameter in
height.
Describe the markings found on the heads of A, B, D, AD and DD rivets.
A: Plain
B: Cross
D: Raised Dot
AD: Dimple
DD: Double Dash
What happens to the stem of a self plugging (friction lock) rivet when the rivet is
installed?
The stem is pulled until it snaps of and the remaining part is trimmed flush with the
head.
Name at least three types of self plugging mechanical lock rivets
CherryMAX, CherryLOCK, OYLMPIC-LOC, and HuckLok rivets
What is the difference between the tools required to pull a CherryLOCK rivet and
a CherryMAX rivet?
CherryLOCK rivet require a a tool for each different size and head shape, one
pulling tool willset any size CherryMAX rivet.
, Which of the five stresses is the most common cause of rivet failure?
Shear
Ifa 2024 rivet must be replaced with a 2117 rivet, how do you determine the size to
be used?
For 5/32 or smaller diameter us the next larger size 2117 rivet, assuming that the
edge distance and spacing meet the minimum requirements.
Describe the process for determining the total length ofa solid rivet for a particular
installation.
Add the grip length plus 1 1/2 the diameter of the rivet.
What minimum edge distance and spacing should be used for a single row of
protruding head rivets?
Not less than two rivet diameters from the edge and not less than three rivet
diameters apart.
How can a mechanic determine wether the countersink for a flush rivet should be
dimpled or drilled
By the thickness of the top sheet; thin sheets are dimpled while thick sheets may be
countersunk.
