Aviation Institute of Maintenance (AIM) Block 2 Practice Exam

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• What is generally used in the construction of aircraft engine firewalls?
• What is the effect of quenching on metal during metallurgical processing?
• Normalizing is a process of heat treating iron-base metals only.
• What is the purpose of a hydraulic accumulator in an aircraft hydraulic system?
• Why is it considered good practice to normalize a part after welding?
• The aluminum code number 1100 identifies what type of aluminum?
• Why is corrosion prevention critical in aircraft maintenance?
• Which of the following describe the effects of annealing steel and aluminum alloys?
• Which fastener type is permanent and commonly flush or countersunk in aircraft assemblies?
• Spilled mercury on aluminum causes rapid and severe corrosion.
• Unless otherwise specified or required, aircraft bolts should be installed so that the bolt-head is
• Aircraft bolts with a cross or asterisk marked on the bolthead are
• Which statement is correct regarding bolt grip lengths?
• What is the function of a relief valve in a hydraulic system?
• How does a fusible link differ from a standard electrical fuse?
• Select the solvent used to clean acrylics and rubber.
• Which statement correctly describes mercury's interaction with aluminum?
• What is the difference between alternating current (AC) and direct current (DC) and give an aviation example of each.
• Generally speaking, bolt grip lengths should be
• How do hydraulic and pneumatic systems differ in terms of fluid, compressibility, and typical applications?
• How can you tell if a pneumatic system has a leak during a leak test?
• When verifying a newly installed system, which of the following should be included in the documentation?
• This type is used to represent an edge or object not visible to the viewer
• When the specific torque value for nuts is not given, where can the recommended torque value be found?
• What are the two common categories of onboard oxygen systems used in aircraft, and one safety concern for each?
• What is the primary purpose of applying a torque sequence when tightening a circular multi-bolt joint?
• Exploded views are commonly used in which catalog?
• What type of diagram shows the wire size required for an installation?
• Aircraft bolts are usually manufactured with a
• In the designation 4130, what does the first digit indicate?
• Which type of drawing is primarily used to model electrical connections and signal flow for troubleshooting?
• What is the diameter and length of an AN8-12 bolt?
• What is the total tolerance range for the dimension 2.3456 +0.002 -0.003?
• What topics does FAA Part 43 cover?
• How does moisture affect electrical resistance in aircraft wiring, and what fault could this cause?
• The rust or corrosion that occurs with most metals is the result of
• In aircraft wiring, what do red and black color codes typically indicate?
• Which statement about tempering steel after hardening is true?
• Which of the following are acceptable to use when utilizing chemical cleaning agents on aircraft?
• In nickel-cadmium battery systems, surfaces affected by electrolyte should be neutralized with which solution?
• Where is an AN clevis bolt used in an airplane?
• Alcad is a metal consisting of
• A pictorial electrical diagram provides
• What is the purpose of a vent in a hydraulic reservoir?
• Which bolt specification is AN4-6?
• Galvanic corrosion is likely to be most rapid and severe when which condition applies?
• Which practice helps prevent galvanic corrosion when joining dissimilar metals in an aircraft structure?
• What is a limit switch, and where is it commonly used on aircraft landing gear?
• What type of corrosion may attack the grain boundaries of aluminum alloys when the heat treatment process has been improperly accomplished?
• Which statement best describes a metal panel in terms of electrical properties and visual indicators?
• Normalizing is a process of heat treating iron-base metals only.
• Caustic cleaning products used on aluminum structures have the effect of producing
• In the alloy designation 4130, what does the first digit indicate?
• For the six basic sketching shapes, which option lists exactly those shapes?
• Which of the listed conditions is NOT one of the requirements for corrosion to occur?
• In the four-digit aluminum index system number 2024, the first digit indicates
• Which of the following is a nonelectrolyte chemical treatment for aluminum that increases corrosion resistance and paint-bonding qualities?
• Which heat-treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
• A hydraulic system schematic drawing typically indicates the which of the following?
• Which action documents the results of torque, wiring/continuity, and functional tests performed during preflight verification?
• What is the typical sequence for verifying a newly installed system before flight?
• Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to
• How should corrosion be removed from magnesium parts?
• What is the function of a check valve in a hydraulic or pneumatic system?
• After neutralization of Ni-Cd electrolyte with boric acid, what is the expected pH outcome?
• A drawing that describes an object made up of two or more parts is called which of the following?
• In dye penetrant inspection, what is the role of the developer after cleaning the surface?
• Which statement best describes cold working?
• When testing a pressurized system for leaks, what is a typical indication of a leak?
• Which drawing type is most suitable to show the relationship and order of assembly of parts?
• During leak testing of a pressurized hydraulic system, which condition would indicate a leak if the system is under test?
• Which material cannot be heat treated repeatedly without harmful effects?
• In metals processing, what term describes deformation of metal by rolling, hammering, or bending that increases strength?
• Which tool is commonly used to make sketches easier?
• Which statement best describes screws in aircraft assemblies?
• For sketching, almost all objects are composed of six basic shapes; which set lists those shapes?
• What is the term for the lifting or flaking of metal surfaces due to delamination of grain boundaries from corrosion products?
• Regarding corrosion and the galvanic series, which statement is true?
• Which action is the most effective safety measure to prevent accidental energizing of a circuit during maintenance?
• Which statement describes hydrogen embrittlement risk when using nonapproved cleaners?
• What is the function of an auxiliary power unit (APU) in aircraft operations?
• In the context of mercury spills on aluminum, which statement is accurate?
• Which statement best describes Ohm's Law and how it is used to size a conductor for an aircraft circuit?
• What is the purpose of a serviceable date or shelf life on aircraft parts?
• Which option lists acceptable items to clean anodized surfaces?
• Metals that are rolled, hammered, or bent can become
• When sketching
• Which statement about the water break test is accurate?
• Which bolt type would be identified by its head marking as magnetically inspected?
• How do you determine the correct torque value for a bolt in an aircraft structural joint?
• What is galvanic corrosion and how can it be prevented on aircraft structures?
• Which statement correctly defines the station number?
• What is an acceptable first step to prevent scratching when cleaning a transparent plastic surface?
• Distinguish between a bolt loaded in shear versus in tension.
• Which of the following statements about the AN8-12 bolt is true?
• Which diagram would you reference to understand the final assembled arrangement of all subsystems on the aircraft?
• Why is lubrication essential in aircraft systems?
• The reheating of a heat treated metal, such as with a welding torch, can significantly affect what area?
• Which of the following are acceptable to use in cleaning anodized surfaces?
• What is the primary purpose of normalizing a part after welding?
• Which statement about boric acid as a neutralizer is true?
• Boric acid, used to neutralize Ni-Cd electrolyte, is best described as which type of acid?
• What is the difference between an FAA Airworthiness Directive (AD) and a Service Bulletin (SB)?
• A drawing that describes a single part is called which of the following?
• Which diagram is typically used to show component connections and signal paths in electrical systems?
• The corrosion mechanism of mercury on aluminum primarily involves which process?
• Which formula relates horsepower to torque and engine RPM?
• What type of tap is used to start threads in a hole or to tap through a hole?
• Which statement best describes the primary purpose of performing a torque check on a newly installed system before flight?
• Annealing steel and aluminum alloys primarily results in which effect(s)?
• Which statement correctly describes the role of lubrication and torque in fastening aircraft bolts?
• How can you distinguish a composite panel from a metal panel during inspection or disassembly?
• What is the purpose of sealant in aircraft structural joints?
• Which statement best describes annealing?
• When installing aircraft bolts, the bolt-head should face
• What does tolerance refer to in a technical drawing?
• Schematic drawings are used for which of the following?
• An accepted rule of thumb for installing bolts in an aircraft structure is to have the bolt head
• In the dimension 4.387 inches +.005 -.002, what is the maximum acceptable size?
• Which device commonly provides AC electrical power in an aircraft electrical system?
• Torque values for tightening aircraft nuts and bolts are related to threads that are
• Which drawing is often used in illustrated parts manuals?
• Torque values can be found in
• A bolt with a single raised dash on the head is classified as which type of bolt?
• Which of the following statements about the AN8-12 bolt is true?
• Which term refers to the depiction of a single component in a technical drawing?
• Alcad is a metal consisting of
• Galvanic corrosion is most rapid when the anodic area is smaller than the cathodic area.
• What is the primary purpose of sealant in aircraft joints?
• Station numbering means
• Regarding orthographic projection, which statement is true?
• Which of the following correctly lists the desired effects of using Alodine on aluminum alloy?
• Why is steel tempered after being hardened?
• What is the primary purpose of applying a torque sequence when tightening a multi-bolt flange in an airframe assembly?
• Aircraft bolts are usually manufactured with a
• Which head marking identifies a standard steel bolt?
• This type of drawing is often used in the IPC (illustrated parts catalog)
• What is the role of a magneto in a piston-engine aircraft ignition system?
• Which of the following bolts has a triangle with an 'X' inside, on the head of the bolt?
• What does ESD stand for, and what measures are used during maintenance to prevent it?
• Name two common non-destructive testing methods used to detect cracks in aluminum aircraft skins.
• Which sequence describes how magnesium engine parts should be cleaned?
• What may occur if the surface of a cladded metal is scratched beyond the protective layer thickness?
• Which may not be detectable even by careful visual inspection of the surface?
• Which head marking identifies a magnetically inspected bolt?
• A specific measured distance from the datum to points on the aircraft is called which term?
• What material symbol is frequently used to represent all metals?
• Which type of drawing will show the flow of fluids in a system?
• Fretting corrosion is most likely to occur under which condition?
• What is static electricity and how do bonding and grounding mitigate its effects on an aircraft?
• Which solvent is recommended for wipe-down of cleaned surfaces before painting?
• Which type of drawing shows the exact size and shape of all parts of complex objects?
• In what type of electrical diagram are images of components used instead of conventional electrical symbols?
• Identify the bolt type that features a triangle with an X stamped on its head in standard aerospace fastener markings.
• Which statement best describes the purpose of Alodine coating on aluminum?
• Which description best defines a bonded joint in aircraft structures?
• Which of the following best describes the key factors to consider when selecting a lubricant for an aircraft engine or mechanical component?
• What safety steps should be taken before performing electrical work on an aircraft to prevent shock or damage?
• The measurements showing the ideal or 'perfect' sizes of parts on drawings are called what?
• How is the locking feature of the fiber-type locknut obtained?
• What tool is used to clean a file?
• What is the diameter and length of an AN4-6 bolt?
• Partial restoration of an anodized coating damaged in service is achieved by which method?
• The drawing where subassemblies are shown as brought together on the aircraft is called
• Which diagram type uses actual pictures of components instead of conventional electrical symbols?
• Which of the following statements about Ni-Cd electrolyte neutralization is true?
• What are best practices for preventing foreign object damage (FOD) when storing tools and equipment around an aircraft engine?
• A three-view orthographic projection typically includes which views?
• After sealant application on an aluminum wing skin, which aspects should be inspected?
• Which of the following best describes measures used to prevent electrostatic discharge during component handling?
• Which of the following statements about the AN8-12 bolt is true?
• Using ordinary or nonapproved cleaning compounds on aircraft can result in which issue?
• Electrical wire sizes will be found in which of the follwoing?
• Why is corrosion prevention critical in aircraft maintenance?
• Which statement about recordkeeping and documentation under Part 43 is correct?
• What may be used to remove corrosion from highly stressed steel surfaces?
• The sacrificial part in a bolt assembly used to mount a part is the
• Which two categories of onboard oxygen systems are commonly used in aircraft, and what are the associated safety concerns for each?
• What is the nonelectrolyte chemical treatment for aluminum alloys that increases corrosion resistance and paint-bonding qualities called?
• What is the recommended practice for cleaning and inspecting an aluminum wing skin after sealant application?
• What does the term "quenching" refer to in metallurgical processes?
• What is a bonded joint and why might bonding be used in aircraft structures?
• Which cleaning agent should be avoided on aluminum structures to prevent corrosion?
• Which statement about bolt grip length is correct?
• What term describes the depiction of a single component in technical drawings?
• Which condition indicates a part has cooled too quickly after being welded?
• What material is typically used as the working fluid in aircraft hydraulic systems?
• Which statement best describes the effect of Alodine on aluminum alloy?
• Ni-Cd battery electrolyte can be neutralized by using which chemical?
• Which type of wrench should be used whenever possible?
• What is the recommended approach for dealing with a minor fuel spill during maintenance?
• Which sequence is part of the recommended cleaning process for magnesium engine parts?
• If the surface of a cladded product is scratched to a depth below the thickness of the cladding, what may happen?
• Fayed surfaces cause concern in chemical cleaning because of the danger of
• Which nondestructive testing method uses ultraviolet light to illuminate penetrant dye to reveal cracks?
• Which of the following is an example of a primary flight control?
• In galvanic corrosion, which statement is true about the galvanic series?
• What does an exploded view show?
• A bolt with a single raised dash on the head belongs to which AN bolt class?
• Which statement best describes rivets in aircraft structures?
• What is the purpose of a water break test?
• What is the purpose of a circuit breaker in an aircraft electrical system?
• Which description correctly characterizes the annealing process of steel?
• Which statement best explains why insulation rating and temperature rating matter when selecting a conductor for an aircraft circuit?
• Which heat-treatment operation changes the surface composition to increase hardness by introducing carbide or nitride elements?
• Define a ground loop, and explain how it can affect aircraft avionics?
• The reheating of a heat treated metal, such as with a welding torch
• When performing dye penetrant inspection, what defect type is detected and how does the process reveal it?
• What material is generally used in the construction of aircraft engine firewalls?
• Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending?
• When an anodized surface coating is damaged in service, it can be partially restored by which method?
• Mercury spill on aluminum surfaces typically results in corrosion that is
• What is preload in a bolted flange and why is it important?
• A fiber type lock nut is held firmly on the threads of a bolt by pressure caused by?
• Which statement about intergranular corrosion in aluminum alloy parts is correct?
• Why is bonding important for lightning protection on aircraft?
• Which statement correctly differentiates primary flight controls from secondary flight controls?
• What is a fusible link, and where is it typically located in an aircraft electrical system?
• What effect does contact between dissimilar metals in the presence of moisture have on aircraft components?
• If the cotter pin hole does not align within the recommended torque range, what is the acceptable practice?