FAA A&P Mechanics Practice Test

These questions are part of the practice quiz. Start practicing

• What defines the performance rating of aviation fuels above grade 100?
• Which FAA publication instructs aircraft owners about unsafe conditions?
• What is one characteristic of series circuits?
• What happens to the current in a DC circuit when voltage is increased while maintaining constant resistance?
• What type of lines are used on aircraft drawings to indicate hidden views?
• What is the formula for computing force in a hydraulic system?
• What happens if the empty weight CG does not fall within the specified range?
• How are battery compartments typically protected against corrosion?
• What should be done with tare weight when weighing an aircraft?
• What are the three main components of a Military Standard flareless-tube fitting?
• What is the importance of calculating "minimum fuel" for weight and balance?
• What represents an edge that cannot be seen from a specific position in aircraft drawings?
• What is a key characteristic of a cold weld?
• What is a "bill of materials" associated with aircraft blueprints?
• What is the purpose of an Airworthiness Directive?
• What is the procedure for an FAA Form 337 after it has been completed?
• Which physical state of matter has a definite volume but not a definite shape?
• What does "tare" weight refer to in weight calculations?
• How many cells does a 24 volt lead-acid battery contain?
• What does "clearance" refer to in aircraft drawings?
• What document must be completed, signed, and dated to acknowledge minor aircraft repairs?
• What is the relationship between pressure and area in calculating force?
• What is the primary purpose of Service Bulletins?
• What publication contains complete instructions for maintenance of all systems and components installed in an aircraft?
• What is included in the 'empty weight' of an aircraft?
• Which publication contains the standard FAA hand signals for taxi signalmen?
• Why is a hydrometer not suitable for assessing the charge of a nickel-cadmium battery?
• How can the 'total moment' of an aircraft be determined?
• Which of the following is NOT a method of heat transfer?
• What happens if an aircraft reciprocating engine is operated with fuel of a lower grade than specified?
• What are center lines in aircraft drawings typically composed of?
• How are watts calculated in a DC circuit?
• Where can you find the Airworthiness Standards for transport category airplanes?
• Which of the following accurately describes a parallel circuit?
• How many views are needed to accurately determine the shape of an object?
• What are the two types of flares used in aircraft plumbing systems?
• Which lines are used on aircraft drawings to show alternate positions?
• Which operation is essential for corrosion-preventative maintenance?
• What effect does a capacitor produce in an AC circuit?
• What is described by the principle of electromagnetic induction?
• Why do mechanics pull a propeller through prior to starting some reciprocating engines?
• What occurs if liquid is present in the cylinder of an engine during propeller rotation?
• What causes fretting corrosion?
• What are FAA Advisory Circulars?
• What is one kilowatt equivalent to in standard units?
• Why are symbols used in aircraft blueprints?
• Which of the following components provides a path for electron flow in a circuit?
• When defects are found during an inspection under FAR 91.169, what type of entry is required?
• Which instrument is used to measure the specific gravity of a lead-acid battery's electrolyte?
• How is impedance defined in an AC circuit?
• What federal regulation defines the requirements for the issue of Type Certificates?
• What is the atmospheric phenomenon when cool air is trapped near the earth by warm air?
• What is considered standard atmospheric pressure at sea level?
• Why might a mechanic need to refer to the FAA Airman's Information Manual?
• What does the identification stripe on a flexible hose signify?
• When a mechanic has a permanent change of address, what must be done within 30 days after the change?
• Which two factors are involved in the calculation of work?
• What should happen to the aircraft records containing the current status of Airworthiness Directives when the aircraft is sold?
• Why is the location of the CG critical for aircraft safety?
• Which of the following are the three states of matter?
• How is pressure commonly expressed in hydraulic and pneumatic systems?
• What can happen if gasoline contaminated with jet fuel is used in a reciprocating engine?
• What is defined as the 'gross weight' of an aircraft?
• What is the speed of sound through the air under standard sea level conditions?
• What information must be marked near fuel filler openings for normal category aircraft?
• Which markings are used to identify AN-type aircraft bolts?
• What is a key advantage of flexible Teflon hose compared to rubber hose?
• What is the 'arm' when dealing with weight and balance in an aircraft?
• What must be included in the record after complying with an Airworthiness Directive (AD)?
• Why is it important for aviation mechanics to know standard light signals used by control tower operators?
• What does the term "time in service" refer to in aircraft maintenance records?
• What is defined as anything that occupies space and has weight?
• What state is aluminum alloy in immediately after solution heat treating and quenching?
• Why might manufacturers specify an empty weight CG even if the aircraft is not flown at that weight?
• Which is the first step in performing a dye penetrant inspection?
• What is meant by "residual" fuel in aviation terms?
• After completing an FAA Form 337, what next step is required?
• When using a hydrometer to check a lead-acid battery's charge, at what electrolyte temperatures is a correction factor needed?
• How is metal tubing generally sized in aviation?
• What is the definition of "minimum fuel" in weight and balance calculations?
• What is commonly understood as weight in regards to matter?
• Why is the center of gravity critical in aircraft operations?
• In a confined fluid, how is force transmitted?
• When assessing aircraft balance, how should the arm be considered for items placed forward of the datum?
• What is the general rule for using self-locking nuts?
• Which of the following is NOT a source of electrical power?
• Which cleaning agent is recommended for use on aircraft engines?
• What are the three primary methods of heat transfer?
• What should you do after removing corrosion from an aircraft surface?
• When weighing an aircraft for empty weight CG, what must be included?
• What type of appearance does a cold weld have?
• Which item is typically NOT included in the 'empty weight' calculation?
• What is the recommended clearance between fluid lines and electrical wiring?
• What is the common safety risk of using contaminated gasoline in a reciprocating engine?
• What atmospheric condition is a factor affecting the type of corrosion that occurs on metals?
• How do the center of gravity (CG) ranges differ between fixed-wing aircraft and helicopters?
• What is the relationship defined by Ohm's Law?
• What do the numbers represent in the performance rating of aviation gasoline below grade 100?
• What is an essential step before applying the penetrant during dye penetrant inspection?
• Which axis is primarily of concern for the 'Center of Gravity' (CG)?
• What is the definition of a "major alteration" in terms of documentation?
• What areas of an aircraft are particularly susceptible to corrosion?
• What happens if an engine does not start and an induction fire continues to burn?
• What is meant by the term 'datum' in aircraft weight and balance?
• What should the specific gravity of the electrolyte be in a fully charged lead-acid battery?
• What does an alternate position line illustrate in aircraft drawings?
• What should be the appropriate electrolyte level in a well-maintained battery?
• What is the first step in the solution heat treating process for aluminum alloys?
• Which regulation would you consult for the specific requirements of an aircraft maintenance manual?
• Which of the following is NOT a type of DC electrical circuit?
• Which temperature is recognized as absolute zero?
• What must a mechanic do after receiving a new certificate?
• What is the formula for the area of a circle?
• How is the 'moment' calculated in aircraft weight and balance?
• What publication is issued by airframe, engine, and component manufacturers to notify aircraft owners of design defects?
• What does the first number signify in the fuel rating of aviation gasoline below grade 100?
• What is inductance in an AC circuit?
• What is the procedure for extinguishing an induction system fire during engine start?
• When must compliance with an Airworthiness Directive take place?
• Who is responsible for making the record entry after a 100 hour inspection?
• What can result from overtightening a flareless tube fitting?
• What is the duration of a mechanic certificate?
• What is considered "ballast" in an aircraft?
• Which cleaning agent is classified as heavy-duty?
• How long must the record of a 100 hour inspection be retained?
• What is the most important law applicable to the study of electricity?
• What must be included in the maintenance record for a rebuilt engine granted zero time?
• What does the correct grip length of a bolt ensure?
• What is the formula for the area of a rectangle?
• What key information is typically found in the title block of a blueprint?
• What happens to molecular motion at absolute zero?
• How many watts are in one horsepower?
• Which document provides instructions for the maintenance of aircraft components?
• How long should aluminum rivets be kept in refrigeration to remain soft?
• How is flexible hose size measured?
• Which example illustrates a first class lever?
• What tool is commonly used to measure outside dimensions of various objects?
• What is the purpose of the baffle plates in a lead-acid battery's electrolyte system?
• Which factor affects the form of corrosion on different types of metals?
• Where should major repair or alteration descriptions be documented?
• What precaution should be taken when deburring the cut end of a tube?
• What does an electrical circuit consist of?
• Which tool is NOT recommended for removing rust from aircraft materials?
• What type of information can be found in FAA Advisory Circulars?
• Where would you look to find out if a specific airplane can be certified in more than one category?
• How should an aircraft owner handle maintenance records?
• Where can you find a list of approved engines for specific aircraft models?
• What should be the depth of penetration when making a fillet weld?
• How can the correct grip length of a bolt be determined?
• What materials are typically used for aircraft plumbing lines?
• What damage can occur if a force is exerted on the crankshaft during a liquid lock?
• What is the purpose of regular cleaning as part of corrosion-preventative maintenance?
• What is the primary purpose of magnetizing a part before conducting a magnetic particle inspection?
• Which battery type has a specific gravity that does not change significantly during charge or discharge?
• What are the three basic parts of a lever?
• Which type of line is used to show dimensions on an aircraft drawing?
• How can changes to an aircraft drawing usually be identified?
• Which of the following is required for returning an aircraft to service after a 100 hour inspection?
• What is the role of the draftsman mentioned in the title block of blueprints?
• Which type of brush is approved for cleaning corroded anodized surfaces?
• What constitutes the 'useful load' of an aircraft?
• What should be the bead width and penetration for a butt weld?
• Which federal regulation prescribes the certificate requirements for a mechanic?
• What are the elements of Ohm's Law?
• What voltage does each cell in a lead-acid battery produce?
• What type of cable is used in primary control systems?
• How is a ratio expressed?
• Which of the following are examples of perfect square numbers?
• What is the value of Pi (π)?
• What does the 'Center of Gravity' (CG) represent in an aircraft?
• What is the required penetration for a butt weld?
• What is the root of a number?
• What is the purpose of sealing in corrosion-preventative maintenance?
• What should be used for a visual inspection of a weld?
• What is the formula for the circumference of a circle?
• What is a key characteristic of 'wet wash' aircraft cleaning?
• What are the privileges of a certified mechanic in regard to propellers?
• Which of the following is a light duty aircraft cleaning agent?
• How do you express a decimal as a percent?
• What is the unit of measurement for power in a DC circuit?
• What happens to air density as temperature increases?
• Where can mechanics find a sample of a 100 hour inspection maintenance record entry?
• How are AN-type fluid line fittings identified?
• How should ferromagnetic particles be applied for magnetic particle inspection?
• How is "tolerance" defined in the context of aircraft drawings?
• What are five common forms of corrosion?
• Why is aircraft category important in weight and balance calculations?
• What type of lever has the fulcrum located between the effort and the resistance?
• Which document is crucial for ensuring safe operation of aircraft?
• Which of these does NOT need to be included in the records for AD compliance?
• What is typically the effect of using a fuel grade that does not meet engine specifications?
• What is the main purpose of quick disconnect couplings in fluid systems?
• What does absolute zero represent in terms of molecular motion?
• Using the powers of ten, how can 1,000,000 be expressed?
• When towing an aircraft with a tow tractor, what brakes should be applied to stop the aircraft?
• How are certain aluminum alloy rivets stored to remain soft after heat treating?
• What is the smallest cable diameter permitted in primary control systems?
• What is the result of mixing aviation gasoline with jet fuel in a turbine engine?
• What is the sum of a large negative number and a small positive number?
• Which of the following best describes 'dry wash' cleaning?
• What is a suitable nondestructive method of detecting surface cracks in aluminum?
• Where can you locate the Airworthiness Standards for various aircraft categories?
• What is the consequence of improper heat during welding?
• What is the first step in the corrosion removal process?
• Under standard conditions, what pressure measurement relates to standard atmospheric pressure?
• What are chocks, blocks, jacks, and chains classified as in weight calculations?
• What is the primary function of a capacitor?
• What represents capacitance in an AC circuit?
• What percentage of slack should be left in a flexible hose during installation?
• Which condition should be avoided when using self-locking nuts?
• Which term describes the dimension or analysis needed to ensure proper fit in moving parts?
• Which weight measurement is used to determine if an aircraft can take off safely?
• What purpose do dimensions serve on an aircraft drawing?
• What does the total weight of an aircraft consist of?
• What primarily determines the density of air?