A&P Airframe Oral Exam (Jeppesen) Questions with 100% Correct Answers Version 2024 Verified
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What is the function of a vortex generator? - It is designed to delay of prevent separation of the
boundary layer.
What are the three axes of an airplane? - Longitudinal, lateral, and vertical.
What are the three primary flight controls of an aircraft? - The ailerons, elevators, and rudder.
Nam...
A&P - Airframe Oral Exam (Jeppesen)
Questions with 100% Correct Answers |
Latest Version 2024 | Verified
What is the function of a vortex generator? - ✔✔It is designed to delay of prevent separation of the
boundary layer.
What are the three axes of an airplane? - ✔✔Longitudinal, lateral, and vertical.
What are the three primary flight controls of an aircraft? - ✔✔The ailerons, elevators, and rudder.
Name several secondary flight controls and describe their general purpose? - ✔✔Secondary flight
controls consist of various types of trim tabs such as balance tabs, anti-servo and servo tabs, and spring
tabs. Their function is to assist the pilot in moving the controls and to trim the aircraft to fly hands-off.
Name several types of auxiliary flight controls and describe their general purpose? - ✔✔The auxiliary
flight controls consist of the various high-lift devices used during low-speed flight such as leading and
trailing edge flaps, slats, slots, speed brakes, etc.
What is a servo trim tab? - ✔✔It is an auxiliary control, positioned by the movement of a primary control
and designed to create aerodynamic forces to assist in moving a control surface.
What is a spring tab? - ✔✔It is an auxiliary control designed to aid the movement of a primary control at
high speeds when control forces become too high.
What is a balance trim tab? - ✔✔It is an auxiliary control designed to create aerodynamic forces to assist
in moving a control surface. The tab is positioned by a control rod connected to the fixed surface on the
same side as the horn an the tab.
What are four most common types of high lift devices? - ✔✔Leading and trailing edge flaps, slats, and
slots.
,Describe some of the tools used to check control surface travel? - ✔✔A universal propeller protractor or
specal control surface protractor.
Name three mechanical methods by which flight control systems may be actuated. - ✔✔Cables, push-
pull rods, and torque tubes.
What is a fairlead? - ✔✔It is a device to prevent a cable from rubbing on the aircraft strcture.
What are the most likely places for a control cable to wear or break? - ✔✔Where the cables pass over
pulleys or through fairleads.
What information is required before a cable rigging chart can be used? - ✔✔The ambient temperature
and the cable size.
What is the function of a cable tension regulator? - ✔✔It automatically adjusts the cable tension to
compensate for expansion and contraction in the aircraft structure.
Describe the function of rotorcraft collective pitch control. - ✔✔The collective control causes each rotor
blade to change its pitch angle by the same amount, thus increasing or decreasing the lift produced by
the rotor.
Describe the function of a rotorcraft cyclic pitch control. - ✔✔The cyclic control tilts the main rotor disc
by by changing the pitch angle of each rotor blade during its cycle of rotation, which causes the
helicopter to move in the direction the rotor tilts.
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 amount of thrust produced by the tail rotor controlled? - ✔✔By moving the foot pedals.
,Why should a control surface be locked when an aircraft is parked? - ✔✔To prevent damage from the
wind.
What is the major type of damage to aluminum structures that is caused by exposure to the weather? -
✔✔Corrosion.
Name several method for forming sheet metal. - ✔✔Bending or folding, stretching, shrinking, bumping,
and crimping.
What are the dimensions of a properly formed rivet head? - ✔✔The head should be 1-1/2 times the
shank 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 rivets are plain, B rivets
have a cross, D rivets have a raised dot, AD rivets have a dimple, and DD rivets have a 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 off and the remaining projecting part is trimmed flush with the head.
Name at least three types of self-plugging mechanical lock rivets. - ✔✔CherryMAX, CherryLOCK,
OLYMPIC-LOK, and HuckLok.
What is the difference between the tools required to pull a CherryLOCK rivet and a CherryMAX rivet? -
✔✔CherryLock rivets require a tool for each different size and head shape, while one pulling tool will set
and size CherryMAX rivet.
Which of the five stresses is the most common cause of rivet failure? - ✔✔Shear.
If a 2024 rivet must be replaced with a 2117 rivet, how do you determine the size to be used? - ✔✔For
5/32" or smaller diameter, use 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 of a solid rivet for a particular installation. -
✔✔Add the grip length (thickness or the materials being joined) plus 1-1/2 times the rivet diameter.
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 whether 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.
What action is taken to prevent cracks from forming while dimpling magnesium or some hard sheet
metals? - ✔✔Hot dimpling equipment is used to preheat and soften the metal before the dimple is
formed.
What type of damage can occur when using a rivet set that does not properly fit the rivet? - ✔✔If the
radius of the set is too small, the rivet head may be damaged, whereas a set with an over-sized radius
may cause damage to the sheet metal.
Why is it important to use the proper size and weight bucking bar when performing sheet metal riveting?
- ✔✔If a bucking bar is too large or heavy it may be difficult to control and may cause damage to the
surrounding structure, whereas a bucking bar that is too light will not properly upset the rivet before
work hardening occurs.
What procedures should be followed to properly remove a solid-shank rivet? - ✔✔Center punch the
rivet and then drill just to the base of the rivet head with the same size or one size smaller drill. Once
drilled, use a pin punch to tip off the rivet head and drive the remaining shank out of the hole while
supporting the surrounding metal.
What are the two special calculations that must be made bending sheet metal? - ✔✔Bend allowance
and setback.
What factors must be considered in order to determine setback? - ✔✔The thickness of the metal and
the bend radius.
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