Naval Aircrewman – Mechanical (AWF) Test 5 Practice

These questions are part of the practice quiz. Start practicing

• What is the function of check nuts?
• What is the role of the check valves in the brake control system?
• When selecting replacement bolts, which characteristic of the bolt's head is considered?
• What maintenance procedure involves inspecting exposed pistons for damage?
• What advantage does hydraulic power provide compared to mechanical parts?
• What term is commonly used to refer to landing gear struts?
• What type of nut is used where frequent removal is necessary and the desired rightness is achieved by hand?
• What is the function of the emergency release handle located near the copilot's seat?
• What is the purpose of lines in hydraulic systems?
• What do pumps in a hydraulic system primarily do?
• What happens if the anti-skid system detects a loss of power?
• Which component is responsible for giving a tire its tensile strength and maintaining shape?
• Which component ensures optimum braking under various runway conditions?
• In hydraulic systems, what is the purpose of fittings?
• Which term describes the arrangement of components in an anti-skid system?
• What is the main purpose of the nose gear manual extension valve?
• What is the main purpose of hydraulic fuses in hydraulic systems?
• What precaution should be taken before removing a wheel?
• What type of fastener allows for quick access and removal of panels in aircraft?
• What materials are aircraft wheels primarily made of?
• What is a key requirement for nuts that are not self-locking?
• What does the head assembly in a filter do?
• What is located near the upper end of each shock strut for filling with hydraulic fluid?
• What is indicated when a bolt extends through the nut at least two full threads?
• What is crucial for securing equipment against vibration in aircraft applications?
• Which type of rivet features a hollow design?
• Which rule states that all safety wires must be tight after installation but not overly tensioned?
• What type of bolt head is the most common?
• What type of fastener is known for its high strength and quick release, usable on both flat and curved panels?
• What do multiple layers of nylon in a tire provide?
• What characteristic defines a solenoid operated selector valve?
• What is the primary purpose of using fasteners in aircraft?
• What is the main function of actuators in a hydraulic system?
• What type of nut is designed to fit into drilled holes and usually provides a self-locking feature?
• Which component locks the landing gear doors in an open or closed position?
• What is the maximum micronic rating of non-cleanable filter elements used in hydraulic filtration?
• What type of fasteners are quick-release fasteners typically identified by?
• What type of actuator has a single piston shaft resulting in unequal working areas?
• Which of the following indicates that the tire must be deflated before removal work?
• What is the function of the head of a bolt?
• Which type of rivets is used in areas that are inaccessible from one side?
• What type of pump allows fluid output to vary with system demand?
• What happens if there is a loss of power in the anti-skid system?
• What typically activates the safety feature of hydraulic fuses?
• Which type of nut is designed to be secured with cotter pins or safety wire?
• Which device converts hydraulic pressure into rotary mechanical motion?
• How do mechanical-lock actuators secure their position?
• What characteristic should flexible lines exhibit to function properly?
• What component serves to align the wheel and axle assembly in the correct position?
• Why might stainless steel be used for certain aircraft components?
• What aspect of the landing gear affects its overall function during landing?
• How is the main gear emergency extension operated during a hydraulic system failure?
• What method extends the nose landing gear when there is a loss of hydraulic pressure?
• What is a key function of selector valves in a hydraulic system?
• What system is used only if the utility hydraulic system fails for lowering the landing gear?
• For which specific requirement are some special fasteners designed?
• What component separates the fluid and air/nitrogen chambers in cylindrical accumulators?
• What is the main purpose of inspecting shock struts?
• What is most commonly used to safeguard hydraulic systems against contaminants?
• What is the correct method for applying safety wire during installation?
• How do tubeless tires retain air?
• What is defined as a total push or pull in physical terms?
• What may be a characteristic of a bolt head for added security?
• What aspect of fluid movement is primarily created by restrictions in the flow path?
• What component is held in the access panel by a retaining ring and is furnished in flush and protruding types?
• What is one of the primary functions of the landing gear brakes?
• Which type of landing gear operations are executed with the tricycle-type landing gear?
• What is a key safety feature of the main gear manual extension system?
• Which brake system is typically used on the main wheel axles of large aircraft?
• What procedure ensures the proper functioning of the landing gear?
• What are solid rivets primarily classified by?
• Which nut is commonly used with standard self-tapering screws?
• What is the role of safetying methods in relation to aircraft hardware?
• Which component is not part of the tire's cord body?
• Which of the following identifies thread fasteners and rivets used by the Air Force and Navy?
• How does the hydraulic system route fluid to required components?
• Why are some fasteners preferred for high-strength requirements?
• What is unique about shear nuts?
• What components comprise the aircraft wheel assembly?
• How is the material type for nuts determined?
• Hydraulic fluids serve as a coolant to maintain what?
• What is the purpose of the breakers in a tire's construction?
• What component of the aircraft is described as "most stressed"?
• To which component should the towing bar be attached?
• What is the common term used to refer to components such as nuts, bolts, and screws on an aircraft?
• Which series is mostly used for aircraft threads?
• Which formula is used to compute force, pressure, and area in fluid power systems?
• What is the primary use of hydraulic fluids in aircraft?
• What happens to the nose landing gear during free fall?
• What is a defining characteristic of Rivnuts?
• In which compartments must close-end Rivnuts be used?
• What kind of wire is often used for safetying in high-temperature, electrical equipment?
• Chafing strips are designed to protect which component of a tire?
• In the context of aircraft braking, what does 'fail-safe' refer to?
• Which type of pump requires an additional pressure regulator for optimal performance?
• What is the most common type of actuator used on naval aircraft?
• Which type of nut has a plain hex shape but can also come in self-locking form?
• What type of wheel allows for tire changes by removing one flange?
• For which purpose would you use barrel nuts?
• What type of brake assembly is commonly found on the main wheel axles of large aircraft?
• Which device is used to prevent excessive rebound during a shock strut's extension stroke?
• What type of head styles do Hi-Shear rivets have?
• Where are non-pressurized reservoirs typically found?
• What are the two series of threads on aircraft bolts and screws according to the American National System?
• What does Pascal's Law state regarding pressure in a confined fluid?
• What is a characteristic of constant displacement pumps?
• Which term is commonly used to describe materials that hold parts of an aircraft together, such as nuts and bolts?
• Which wheels are typically not interchangeable?
• Which Rivnuts are most widely recommended?
• Which of the following describes the three principal parts of a bolt?
• What is the role of a pressurized reservoir in a hydraulic system?
• What is the primary use of channel nuts?
• Which tread pattern is most commonly used on naval aircraft tires?
• What are the two types of lines used in a hydraulic system?
• What is a common function of hydraulic fluids regarding wear and tear in machinery?
• How are the two halves of a divided wheel sealed together?
• What is the standard pressure used in most Navy high-performance aircraft hydraulic systems?
• Which type of nut can operate in blind mounting areas for easier maintenance?
• What is the primary function of reservoirs in hydraulic systems?
• What should be done if the fluid level of the shock strut is extremely low?
• What is the primary purpose of hydraulic accumulators?
• Which type of nut is typically used in devices subjected to shearing stress?
• What is a characteristic of castellated nuts?
• Which type of actuator is designed to be locked in a specific position for safety or operational purposes?
• How are threads on bolts sized?
• What are the primary contributors to the wear of aircraft wheels?
• What is one of the uses of blind rivets?
• What must be avoided in the installation of flexible lines for optimal performance?
• Which of the following is NOT a component of hydraulic systems?
• What is required during the removal process of split wheels?
• What type of braking system is characterized by high-pressure and low displacement?
• What should be considered when selecting replacement bolts in terms of material?
• What color is Skydrol hydraulic fluid?
• What is the function of the centering device in the landing gear system?
• Which nuts are used primarily for maintenance in blind mounting applications?
• What is indicated when a bolt extends through a nut at least two threads?
• What is the primary purpose of rigid lines in a hydraulic system?
• What ensures a constant flow of fluid to hydraulic pumps in a pressurized reservoir?
• What distinguishes a balanced actuator from an unbalanced actuator?
• What does the abbreviation NAS stand for in relation to thread fasteners and rivets?
• What is the primary requirement for hydraulic lines regarding their diameter?
• Which type of accumulator uses a synthetic rubber diaphragm?
• What type of system is recommended for emergencies if the regular hydraulic system fails?
• What is the primary purpose of hydraulic pressure in aircraft brake systems?
• What type of output does a variable displacement pump provide?
• What characteristic does the principle hydraulic fluid used in military aircraft have?
• Which of these nuts is characterized by being used in applications requiring equal spacing around openings?
• What is the primary function of hydraulic motors in aircraft?
• What does the hydraulic fuse primarily ensure in an aircraft hydraulic system?
• What type of system uses a manual driver and cable release for emergency landing gear operation?
• What describes the stress experienced during the transition from flight to landing?
• What type of fasteners are often characterized by a manufacturer's trade name and are used to secure panels requiring removal?
• What type of pressure is used to control the emergency nose gear extension valve?
• What are the three operational checks of the landing gear system?
• What does the term 'free fall' refer to in the context of landing gear?
• What component of the anti-skid system provides wheel speed information?
• What is a significant characteristic of tubeless tires compared to tube tires?
• What happens if a bolt is too long or too short according to proper grip standards?
• What type of fastener is described as a threaded screw-type used on a hinged cap-style casket?
• What type of strut is designed to reduce rapid extension during landing gear operation?
• What is a characteristic feature of hydraulic systems related to force transmission?
• What does the nose landing gear require before it can be retracted?
• What components are involved in the nose gear up system?
• What type of pump operates using two gears within a housing?
• What material are cotter pins typically made of?
• Which part of the filter assembly is removed for replacement?
• What role do accumulators play in hydraulic systems?
• What are Hi-Shear rivets primarily used for?
• What does the landing gear door latch system consist of?
• Which component is essential for allowing the aircraft brake system to function properly during different conditions?
• What is a characteristic of the hydraulic latch cylinder used in the landing gear system?
• What method is used to ensure separated wheel halves are statically balanced?
• What is the function of the beads in a tire?
• What primarily helps determine the strength and resistance to corrosion of an aircraft bolt?
• What is a significant feature of special fasteners?
• What are the four principal parts of a quick-release design fastener used on panels?
• What does a piston type pump utilize to create a steady flow of liquid?
• What does a Hi-Lok fastener consist of?
• Which type of selector valve utilizes a camshaft to change the flow position of fluid?
• What component is crucial for preventing the nose wheel from being cocked during retraction?
• What are the three principal parts of a bolt?
• What is a common issue that can lead to aircraft wheel failure?
• How does a slide type selector valve control fluid direction?
• What mechanism allows hydraulic systems to handle pressure surges effectively?
• In hydraulic systems, what is the purpose of the return fluid flow?
• Which part of a hydraulic accumulator stores a volume of fluid under pressure?
• What materials are used to prevent the rotation and movement of fasteners in an aircraft?
• What does the dual skid control valves do in the anti-skid system?
• What is the purpose of a dampening or snubbing device within a shock strut?
• Which system continuously monitors the aircraft brakes under various runway conditions?
• How do cotter pins function in securing aircraft hardware?
• What is the primary function of landing gear doors when the gear is retracted?
• What type of hydraulic units support the aircraft on the ground and absorb landing shock?
• What is the primary use of rivets in aircraft construction?
• What is the effect of compressed air or nitrogen in the shock strut?
• Which material property of hydraulic lines is crucial for withstanding pressure surges?
• Which assembly consists of a stud, a cross pin, a spring, and a spring cup designed for quick insertion into a grommet?
• What are safety wire and cotter pins primarily used for in aircraft hardware?
• Why are hydraulic fluids advantageous in mechanical systems?
• Which mechanism indicates that a filter element needs cleaning?
• What device prevents sudden loss of hydraulic fluid pressure in aircraft systems?
• What standard is represented by the abbreviation MS in the identification of thread fasteners and rivets?
• What component is responsible for protecting the tire from cuts and moisture?
• What information is denoted by the letter(s) following the head-shaped code of a rivet?
• What are the dimensions considered in choosing a bolt?
• Which type of landing gear is commonly used in nearly all fixed-wing aircraft?
• Which type of hydraulic fluid is known for its fire-resistant properties and is commonly used in commercial aircraft?
• In which scenario would the emergency systems be activated?
• What procedure should be followed when handling inflated and partially inflated wheels?
• What are typical forces involved in an aircraft hydraulic system?
• Where are the main landing gear struts typically attached?
• How can the clogging extent of a filter element be discerned?
• How is pressure defined in the context of physics?
• What type of nuts are specifically referred to for external-wrenching applications?
• What configuration do tandem type actuators use?
• What is the outer layer of rubber on a tire called?
• Which of the following systems can actuators be attached to in an aircraft?
• What type of selector valve typically has three positions?
• Which component of the anti-skid system receives input from the wheel transducers?
• What component is used to connect fluid lines to the power source and application points?
• What does the tread of a tire primarily protect?
• How many different tread patterns are noted for naval aircraft tires?
• What does the ply rating refer to in tire specifications?
• Which check is performed after maintenance on a landing gear component?