A&P GENERAL-4

Which of the following conditions has the most potential for causing engine damage when starting or attempting to start a turbine engine?. Hot start. Cold start. Hung start.

An Airworthiness Directive requires that a propeller be altered. Certificated mechanics could. perform and approve the work for return to service if it is a minor alteration. not perform the work because they are not allowed to perform and approve for return to service, repairs or alterations to propellers. not perform the work because it is an alteration.

The measurements showing the ideal or 'perfect' sizes of parts on drawings are called. dimensions. allowances. tolerances.

(Refer to Figure 34.) What is the dimension of the chamfer?. 0.0625 X 45°. 1/16 X 37°. 0.3125 + .005 -0.

If all, or a significant part of a stall strip is missing on an airplane wing, a likely result will be. asymmetrical lateral control at low angles of attack. asymmetrical lateral control at or near stall angles of attack. decreased lift in the area of installation at high angles of attack.

The purpose of providing a space underneath the plates in a lead acid battery's cell container is to. prevent sediment buildup from contacting the plates and causing a short circuit. ensure that the electrolyte quantity ratio to the number of plates and plate area is adequate. allow for convection flow of the electrolyte in order to provide for cooling of the plates.

A Technical Standard Order (TSO) is issued by whom?. Part manufacturers. The Aircraft industry. The Administrator.

A part which is being prepared for dye penetrant inspection should be cleaned with. the penetrant developer. water-base solvents only. a volatile petroleum-base solvent.

When dealing with weight and balance of an aircraft, the term 'maximum weight' is interpreted to mean the maximum. weight of the empty aircraft. weight of the useful load. authorized weight of the aircraft and its contents.

(Refer to Figure 32.) What is the next step required for a working sketch of the illustration?. Sketch extension and dimension lines. Add notes, dimensions, title, and date. Darken the object outlines.

(1) Sketches are usually made with the aid of drafting instruments. (2) Sketches are usually more complicated to make when using graph paper. Regarding the above statements,. Only No. 1 is true. Only No. 2 is true. Neither No. 1 nor No. 2 is true.

What is/are the appropriate action(s) concerning minor repairs performed on a certificated aircraft? 1) FAA Form 337's must be completed. 2) Entries must be made in the aircraft's maintenance record. 3) The owner of the aircraft must submit a record of all minor repairs to the FAA at least annually. 2 and 3. 2. 1 and 2.

When a discrepancy list is provided to an aircraft owner or operator after an inspection, it says in effect that: The item inspected is unairworthy. Except for these discrepancies, the item inspected is airworthy. The item inspected may or may not be airworthy depending on the discrepancies found.

(Refer to Figure 34.) What would be the minimum diameter of 4130 round stock required for the construction of the clevis that would produce a machined surface?. 55/64 inch. 7/8 inch. 1 inch.

Which statement is true regarding an orthographic projection?. It could have as many as eight views. There are always at least two views. One-view, two-view, and three-view drawings are the most common.

Find the cube of 64. 192. 4. 262,144.

In the process of weighing an airplane toward obtaining the CG, the arms from the weighing points always extend. parallel to the centerline of the airplane. straight forward from each of the landing gear. directly from each weighing point to the others.

The most important condition to be monitored during start after fuel flow begins in a turbine engine is the: Oil pressure. RPM. EGT, TIT, or ITT.

When approving for return to service after maintenance or alteration, the approving person must enter in the maintenance record of the aircraft: The date the maintenance or alteration was begun, a description (or reference to acceptable data) of work performed, the name of the person performing the work (if someone else), signature, and certificate number. A description (or reference to acceptable data) of work performed, date of completion, the name of the person performing the work (if someone else), signature, and certificate number. A description (or reference to acceptable data) of work performed, date of completion, the name of the person performing the work (if someone else), signature, certificate number, and kind of certificate held.

If the fluid pressure is 800 PSI in a 1/2-inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be. 4,000 pounds. 800 pounds. 8,000 pounds.

When flaring aluminum tubing for use with AN fittings, the flare angle must be. 39°. 45°. 37°.

A person should approach or leave a helicopter in the pilot's field of vision whenever the engine is running in order to avoid. The main rotor. Blowing dust or debris caused by rotor downwash. The tail rotor.

Which of the following describe the effects of annealing steel and aluminum alloys? 1) decrease in internal stress. 2) softening of the metal. 3) improved corrosion resistance. 1, 2. 2, 3. 1, 3.

The positive aspects of human factor issues are referred to as the. Magnificent Seven. Dirty Dozen. MEDA.

An aircraft was not approved for return to service after an annual inspection and the owner wanted to fly the aircraft to another maintenance base. Which statement is correct?. The owner must obtain a special flight permit. The aircraft becomes a restricted category type until it is approved for return to service. The aircraft may be flown without restriction up to 10 hours to reach another maintenance base.

Galvanic corrosion is likely to be most rapid and severe when. the surface area of the cathodic metal is smaller than surface area of the anodic metal. the surface area of the anodic metal is smaller than the surface area of the cathodic metal. the surface areas of the anodic and cathodic metals are approximately the same.

(Refer to Figure 12.) Find the total resistance of the circuit. 16 ohms. 21.2 ohms. 2.6 ohms.

Alclad is a metal consisting of. a homogeneous mixture of pure aluminum and aluminum alloy. pure aluminum surface layers on an aluminum alloy core. aluminum alloy surface layers and a pure aluminum core.

Select a characteristic of a good gas weld. The weld should taper off smoothly into the base metal. The height of the weld bead should be 1/8 inch above the base metal. The depth of penetration shall be sufficient to ensure fusion of the filler rod.

(Refer to Figure 39.) Determine the maximum length of a No. 12 single cable that can be used between a 28-volt bus and a component utilizing 20 amperes continuous load in free air with a maximum acceptable 1-volt drop. 26.5 feet. 22.5 feet. 12.5 feet.

Which of the following is the most satisfactory extinguishing agent for use on a carburetor or intake fire?. Dry chemical. A fine, water mist. Carbon dioxide.

How long are AD compliance records required to be kept?. For one year after the work is performed, or until the work is repeated or superseded by other work. Until the work is repeated or superseded by other work. They shall be retained, and then transferred with the aircraft when it is sold.

What is generally used in the construction of aircraft exhaust collectors, stacks, and manifolds?. Stainless steel. Chrome-molybdenum alloy steel. Titanium nickel alloy.

The replacement of a damaged vertical stabilizer with a new identical stabilizer purchased from the aircraft manufacturer is considered a. minor repair. major repair. minor alteration.

How many gallons of fuel will be contained in a rectangular-shaped tank which measures 2 feet in width, 3 feet in length, and 1 foot 8 inches in depth? (7.5 gal = 1 cu ft). 45. 75. 66.6.

Which of the following is an instance when a special flight permit may not be issued?. Flying the aircraft to a location where repairs or maintenance can be performed. Flying a customer demonstration flight. Flying passengers on a scheduled operation.

A fully charged lead-acid battery will not freeze until extremely low temperatures are reached because. the acid is in the plates, thereby increasing the specific gravity of the solution. most of the acid is in the solution. increased internal resistance generates sufficient heat to prevent freezing.

(Refer to Figure 9.) How many instruments (voltmeters and ammeters) are installed correctly?. One. Three. Two.

Spilled mercury on aluminum. causes rapid and severe corrosion that is very difficult to control. greatly increases susceptibility to hydrogen embrittlement. may cause impaired corrosion resistance if left in prolonged contact.

Convert the binary number 1111 to decimal form. 15. 16. 14.

What will a voltmeter read if properly connected across a closed switch in a circuit with electrical power on?. Voltage drop in the component(s) the switch is connected to. Zero voltage. System voltage.

(Refer to Figure 19.) Under which condition will a ground be provided for the warning horn through both gear switches when the throttles are closed?. Right gear up and left gear down. Both gears up and the control valve out of neutral. Left gear up and right gear down.

(Refer to Figure 48.) What does the micrometer read?. .3004. .3108. .2974.

Flexible lines must be installed with. a slack of at least 10 to 12 percent of the length. enough slack to allow maximum flexing during operation. a slack of 5 to 8 percent of the length.

(Refer to Figure 59.) Solve the equation. -31.25. +31.25. -5.20.

(Refer to Figure 41.) Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM. 35.5 pounds. 25.3 pounds. 49.8 pounds.

A certain aircraft bolt has an overall length of 1-1/2 inches, with a shank length of 1-3/16 inches, and a threaded portion length of 5/8 inch. What is the grip length?. .5625 inch. .3125 inch. .8750 inch.

Specifications pertaining to an aircraft model manufactured under a type certificate, of which less than 50 are shown on the FAA Aircraft Registry, can be found in the: Aircraft Listing. FAA Statistical Handbook of Civil Aircraft Specifications. Summary of Discontinued Aircraft Specifications.

(Refer to Figure 40.) Determine the proper tension for a 1/8-inch cable (7 x 19) if the temperature is 80°F. 70 pounds. 80 pounds. 75 pounds.

What must accompany fuel vaporization?. A reduction in volume. An absorption of heat. A decrease in vapor pressure.

The term that describes the combined resistive forces in an ac circuit is. reactance. resistance. impedance.

The amount of fuel used for computing empty weight and corresponding CG is. the amount of fuel necessary for 1/2 hour of operation. unusable fuel. empty fuel tanks.

(Refer to Figure 34.) What is the maximum diameter of the hole for the clevis pin?. 0.3175. 0.31255. 0.3130.

Most modern aircraft are designed so that if all seats are occupied, full baggage weight is carried, and all fuel tanks are full, what will be the weight condition of the aircraft?. It will be at maximum taxi or ramp weight. It will be in excess of maximum takeoff weight. It will be at maximum basic operating weight (BOW).

Which statement is true regarding the requirements for maintenance record format?. The format provided by the manufacturer of the aircraft must be retained. Any format that provides record continuity and includes the required information may be used. Any desired change from manufacturer provided format requires approval from the Federal Aviation Administration.

.002KV equals. .2 volt. 2.0 volts. 20 volts.

The number 3.47 x 10 to the negative fourth power is equal to. 34,700. .00347. .000347.

What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are: 1.0625 + .0025 - .0003?. 1.0650. 1.0647. .0028.

Find the square root of 3,722.1835. 61.00971. 61.00. 61.0097.

What is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?. 9:5. 1:1.8. 1:0.56.

An engine of 98 horsepower maximum is running at 75 percent power. What is the horsepower being developed?. 87.00. 33.30. 73.50.

What numbering system is used to locate fuselage frames?. Tolerances. Station numbers. Zone numbers.

Who has the authority to approve for return to service a propeller after a 100-hour inspection? 1) A mechanic with a powerplant rating. 2) Any certificated repairman. 3) A non-certificated mechanic working under the supervision of a certificated mechanic with airframe and powerplant ratings. 2. 1 and 3. 1.

Forward biasing of a solid state device will cause the device to. conduct via zener breakdown. conduct. turn off.

Which of the following statements are correct?. When the collective pitch control lever is raised, the blade angle of all the rotor blades increases uniformly and they create the lift that allows the helicopter to take off vertically. When the collective pitch control lever is raised, the blade angle of the aft rotor blades decreases uniformly and they create the lift that allows the helicopter to take off vertically. When the cyclic pitch control lever is raised, the blade angle of all the rotor blades increases uniformly and they create the lift that allows the helicopter to take off vertically.

If three resistors of 3 ohms, 5 ohms, and 22 ohms are connected in series in a 28-volt circuit, how much current will flow through the 3-ohm resistor?. 0.93 ampere. 1.05 amperes. 9.3 amperes.

14 CFR Part 65 contains information for the certification of. flight crewmembers other than pilots. pilots, flight instructors, and ground instructors. airmen other than flight crewmembers.

The purpose of stall strips on airplane wings is to. ensure that the wing root areas stall first. prevent stall in the areas of installation. increase lift in the areas of installation.

(Refer to Figure 36.) The diameter of the holes in the finished object is. 1/2 inch. 3/4 inch. 31/64 inch.

What is the status of data used as a basis for approving major repairs or alterations for return to service?. Data must be least FAA-acceptable when it is used for that purpose. Data must be FAA-approved prior to its use for that purpose. Data may be FAA-approved after its use for that purpose.

The 100-hour inspection required by Federal Aviation Regulations for certain aircraft being operated for hire may be performed by. persons working under the supervision of an appropriately rated mechanic, but the aircraft must be approved by the mechanic for return to service. appropriately rated mechanics only if they have an inspection authorization. appropriately rated mechanics and approved by them for return to service.

Examples of units used in the conventional (U.S. or English) measurement include. inch, meter, and rod. inch, kilometer, and fraction. inch, feet, and yard.

Caustic cleaning products used on aluminum structures have the effect of producing. improved corrosion resistance. corrosion. passive oxidation.

What tool is generally used to calibrate a micrometer or check its accuracy?. Dial indicator. Gauge block. Machinist scale.

The clearance between the piston rings and the ring lands is measured with a. depth gauge. thickness gauge. micrometer caliper.

A drawing in which the subassemblies or parts are shown as brought together on the aircraft is called. a detail drawing. an assembly drawing. an installation drawing.

Which of the following is the square root of (-1776)/(-2) - 632?. 128. 16. 256.

Instrument repairs may be performed. by the instrument manufacturer only. by an FAA-approved instrument repair station. on airframe instruments by mechanics with an airframe rating.

Both gasoline and kerosene have certain advantages for use as turbine fuel. Which statement is true in reference to the advantages of each?. Gasoline has a higher heat energy/value per unit volume than kerosene. Kerosene has a higher heat energy/value per unit weight than gasoline. Kerosene has a higher heat energy/value per unit volume than gasoline.

(Refer to Figure 18.) When the landing gears are up and the throttles are retarded, the warning horn will not sound if an open occurs in wire. No. 9. No. 2. No. 4.

All other things being equal, if an item of useful load located aft of an aircraft's CG is removed, the aircraft's CG change will be. aft in proportion to the weight of the item and its location in the aircraft. forward in proportion to the weight of the item and its location in the aircraft. forward in proportion to the weight of the item, regardless of its location in the aircraft.

Which alternative answer is equal to 16,300?. 1.63 x 10 to the fourth power. 163 x 10 to the negative second power. 1.63 x 10 to the negative third power.

The Air Transport Association of America (ATA) Specification No. 100 (1) Establishes a standard for the presentation of technical data in maintenance manuals. (2) Divides the aircraft into numbered systems and subsystems in order to simplify locating maintenance instructions. Regarding the above statements: Both No. 1 and No. 2 are true. Only No. 1 is true. Neither No. 1 nor No. 2 is true.

Which of the following materials may be inspected using the magnetic particle inspection method? 1) Magnesium alloys. 2) Aluminum alloys. 3) Iron alloys. 4) Copper alloys. 5) Zinc alloys. 1, 2, 3. 1, 2, 4, 5. 3.

When referring to an electrical circuit diagram, what point is considered to be at zero voltage?. The circuit breaker. The switch. The ground reference.

(1) An aircraft part may be demagnetized by subjecting it to a magnetizing force from alternating current that is gradually reduced in strength. (2) An aircraft part may be demagnetized by subjecting it to a magnetizing force from direct current that is alternately reversed in direction and gradually reduced in strength. Regarding the above statements,. only No. 1 is true. only No. 2 is true. both No. 1 and No. 2 are true.

Intergranular corrosion in aluminum alloy parts. commonly appears as threadlike filaments of corrosion products under a dense film of paint. cannot always be detected by surface indications. may be detected by surface pitting, and white, powdery deposit formed on the surface of the metal.

The following is a table of airspeed limits as given in an FAA-issued aircraft specification: Normal operating speed 260 knots Never-exceed speed 293 knots Maximum landing gear operation speed 174 knots Maximum flap extended speed 139 knots The high end of the white arc on the airspeed instrument would be at: 139 knots. 293 knots. 260 knots.

Corrosion caused by galvanic action is the result of. excessive etching. contact between two unlike metals. excessive anodization.

Sixty-five engines are what percent of 80 engines?. 81 percent. 52 percent. 65 percent.

In the reading of aircraft blueprints, the term 'tolerance,' used in association with aircraft parts or components,. is the difference between extreme permissible dimensions that a part may have and still be acceptable. represents the limit of galvanic compatibility between different adjoining material types in aircraft parts. is the tightest permissible fit for proper construction and operation of mating parts.

A six-cylinder engine with a bore of 3.5 inches, a cylinder height of 7 inches and a stroke of 4.5 inches will have a total piston displacement of. 259.77 cubic inches. 43.3 cubic inches. 256.88 cubic inches.

Which of the following is an acceptable first step procedure to help prevent scratching when cleaning a transparent plastic surface?. Flush the surface with clean water. Gently wipe the surface with a clean, dry, soft cloth. Gently wipe the surface with a clean, soft cloth moistened with de-mineralized or distilled water.

When starting and ground operating an aircraft's engine, the aircraft should be positioned to head into the wind primarily: To aid in achieving and maintaining the proper air flow into the engine induction system. To help cancel out engine torque effect. For engine cooling purposes.

The desired effect of using winglets on an aircraft's wingtips is to. increase the lift to drag ratio. optimize wing dihedral and improve lateral stability. reduce the aspect ratio.

How is a flooded engine, equipped with a float-type carburetor, cleared of excessive fuel?. Crank the engine with the starter or by hand, with the mixture control in cutoff, ignition switch off, and the throttle fully open, until the fuel charge has been cleared. Turn off the fuel and the ignition. Discontinue the starting attempt until the excess fuel has cleared. Crank the engine with the starter or by hand, with the mixture control in cutoff, ignition switch on, and the throttle fully open, until the excess fuel has cleared or until the engine starts.

What does the Type Certificate Data Sheet designation code '2 PCSM' mean?. Neither of the other two choices. Two wing (biplane), primary category, semimonocoque (airframe). Two place (number of seats), closed, sea, monoplane.

Where should you find this entry? 'Removed right wing from aircraft and removed skin from outer 6 feet. Repaired buckled spar 49 inches from tip in accordance with figure 8 in the manufacturer's structural repair manual No. 28-1.'. Aircraft minor repair and alteration record. Aircraft engine maintenance record. FAA Form 337.

What is absolute humidity?. The ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure. The actual amount of the water vapor in a mixture of air and water. The temperature to which humid air must be cooled at constant pressure to become saturated.

Schematic diagrams are best suited for which of the following?. Showing the visual details of individual components in a system. Troubleshooting system malfunctions. Showing the overall location and appearance of components in a system.

What does the letter Q symbolize when measuring electrical charge?. Coulomb. Electron. Farad.

(Refer to Figure 7.) If resistor R(3) is disconnected at terminal D, what will the ohmmeter read?. Infinite resistance. 20 ohms. 10 ohms.

What effect, if any, will aviation gasoline mixed with jet fuel have on a turbine engine?. The tetraethyl lead in the gasoline forms deposits on the turbine blades. No appreciable effect. The tetraethyl lead in the gasoline forms deposits on the compressor blades.

In a metal tubing installation,. rigid straight line runs are preferable. tension is undesirable because pressurization will cause it to expand and shift. a tube may be pulled in line if the nut will start on the threaded coupling.

The maximum weight of an aircraft is the. empty weight plus crew, passengers, and fixed equipment. empty weight plus crew, maximum fuel, cargo, and baggage. empty weight plus useful load.

A certificated mechanic with a powerplant rating may perform the. 100-hour inspection required by the Federal Aviation Regulations on an airframe, powerplant or any other component thereof and approve and return the same to service. 100-hour inspection required by the Federal Aviation Regulations on a powerplant or any component thereof and approve and return the same to service. annual inspection required by the Federal Aviation Regulations on a powerplant or any component thereof and approve and return the same to service.

Which statement is true regarding the variety of symbols utilized on the identifying color-code bands that are currently used on aircraft plumbing lines?. Symbols are composed of one to three contrasting colors according to line content. Symbols are composed of various single colors according to line content. Symbols are always black against a white background regardless of line content.

(1) A Supplemental Type Certificate may be issued to more than one applicant for the same design change, providing each applicant shows compliance with the applicable airworthiness requirement. (2) An installation of an item manufactured in accordance with the Technical Standard Order system requires no further approval for installation in a particular aircraft. Regarding the above statements: Neither No. 1 nor No. 2 is true. Only No. 1 is true. Both No. 1 and No. 2 are true.

What is the total capacitance of a circuit containing three capacitors in parallel with capacitances of .02 microfarad, .05 microfarad, and .10 microfarad, respectively?. .0125 uF. .170 uF. 0.125 pF.

For aircraft operated under part 91, which of the following records must be retained for at least one year, or until the work is repeated or superseded?. Records of maintenance, alterations, preventive maintenance, 100-hour, annual, and progressive inspections. Records of the current inspection status of the aircraft, including time since last required inspection. Records of time since overhaul of items requiring overhaul on a time specified basis.