A&P GENERAL-1

To obtain useful weight data for purposes of determining the CG, it is necessary that an aircraft be weighed. with no more than minimum fuel (1/12-gallon per METO horsepower) in all fuel tanks. with all items of useful load installed. in a level flight attitude.

Characteristics of aviation gasoline are: High heat value, Low volatility. Low heat value, Low volatility. High heat value, High volatility.

How many amperes will a 28-volt generator be required to supply to a circuit containing five lamps in parallel, three of which have a resistance of 6 ohms each and two of which have a resistance of 5 ohms each?. 1.11 amperes. 25.23 amperes. 1 ampere.

The amount of electricity a capacitor can store is directly proportional to the. plate area and is not affected by the distance between the plates. distance between the plates and inversely proportional to the plate area. plate area and inversely proportional to the distance between the plates.

The potential difference between two conductors which are insulated from each other is measured in. amperes. volts. coulombs.

The following alteration was performed on an aircraft: A model B engine weighing 175 pounds was replaced by a model D engine weighing 185 pounds at a -62.00-inch station. The aircraft weight and balance records show the previous empty weight to be 998 pounds and an empty weight CG of 13.48 inches. What is the new empty weight CG?. 12.73 inches. 14.25 inches. 13.96 inches.

If an aircraft CG is found to be at 24 percent of MAC, that 24 percent is an expression of the. distance from the TEMAC. average distance from the LEMAC to the wing center of lift. distance from the LEMAC.

Why is a mechanic applicant issued a temporary certificate after successful completion of the required tests?. So that a background check/ investigation may be completed. Both of the other two choices. To allow for review of his/her application and supplementary documents.

During an annual inspection, if a defect is found which makes the aircraft unairworthy, the person disapproving must: Submit a Malfunction or Defect Report. Provide a written notice of the defect to the owner. Void the aircraft's Airworthiness Certificate.

(Refer to Figure 42.) Which of the bolthead code markings shown identifies an AN corrosion resistant steel bolt?. 1. 2. 3.

What force is exerted on the piston in a hydraulic cylinder if the area of the piston is 1.2 square inches and the fluid pressure is 850 PSI?. 1,020 pounds. 850 pounds. 960 pounds.

(Refer to Figure 15.) When the landing gear is down, the green light will not come on if an open occurs in wire. No. 7. No. 17. No. 6.

Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than. 1/32 inch or 20 percent of wall thickness, whichever is less. 20 percent of the wall thickness. 10 percent of the wall thickness.

When is a mechanic responsible for checking AD compliance?. When performing an inspection required under part 91, 125, or 135. Never, the owner or operator is solely responsible. Anytime an aircraft or portion thereof is returned to service.

Of the following, when and/or where is galvanic corrosion is most likely to occur?. In an area of unprotected metal exposed to an atmosphere containing battery fumes, exhaust gases, or industrial contaminants. When an electrolyte (water) covers the surface of an aluminum skin, seeps into the cracks between lap joints, and oxygen is excluded from the area. At the interface of a steel fastener and aluminum alloy inspection plate in the presence of an electrolyte.

An aircraft owner was provided a list of discrepancies on an aircraft that was not approved for return to service after an annual inspection. Which of the following statements is/are true concerning who may correct the discrepancies? 1) Only a mechanic with an inspection authorization. 2) An appropriately rated mechanic. 3) Any certificated repair station. 1. 2. 2 & 3.

In physics, which of the following factors are necessary to determine power? 1) Force exerted. 2) Distance moved. 3) Time required. 1, 2, and 3. 2 and 3. 1 and 2.

Aircraft bolts with a cross or asterisk marked on the bolthead are. made of aluminum alloy. standard steel bolts. close tolerance bolts.

The electrolyte of a nickel-cadmium battery is the lowest when the battery is. under a heavy load condition. in a discharged condition. being charged.

(Refer to Figure 55.) Find the area of the triangle shown. 6 square inches. 12 square inches. 15 square inches.

A 12-volt electric motor has 1,000 watts input and 1 horsepower output. Maintaining the same efficiency, how much input power will a 24-volt, 1-horsepower electric motor require (Note: 1 horsepower = 746 watts). 2,000 watts. 500 watts. 1,000 watts.

On a fillet weld, the penetration requirement includes what percentage(s) of the base metal thickness?. 100 percent. 60 to 80 percent. 25 to 50 percent.

Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum. 3/64. 1/32. 1/16.

Which statement is applicable when using a sketch for making a part?. The sketch must show all information to manufacture the part. The sketch may be used only if supplemented with three-view orthographic projection drawings. The sketch need not show all necessary construction details.

(Refer to Figure 14.) The total resistance of the circuit is. 17 ohms. 35 ohms. 25 ohms.

(Refer to Figure 3.) When more than two inductors of different inductances are connected in parallel in a circuit, the total inductance is. equal to the inductance of the highest rated inductor. less than the inductance of the lowest rated inductor. equal to the sum of the individual inductances.

When approaching the front of an idling jet engine, the hazard area extends forward of the engine approximately: 15 Feet. 10 Feet. 25 Feet.

Aviation Maintenance Alerts (formerly General Aviation Airworthiness Alerts). Provide information about aircraft problems and suggested corrective actions. Provide mandatory procedures to prevent or correct serious aircraft problems. Provide temporary emergency procedures until Airworthiness Directives can be issued.

What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?. The ampere-hour capacity of the battery. The total plate area of the battery. The state-of-charge of the battery.

Which requires the most electrical power? (Note: 1 horsepower = 746 watts). A 1/5-horsepower, 24-volt motor which is 75 percent efficient. Four 30-watt lamps arranged in a 12-volt parallel circuit. A 24-volt anticollision light circuit consisting of two light assemblies which require 3 amperes each during operation.

What is the maintenance recording responsibility of the person who complies with an Airworthiness Directive?. Advise the FAA district office of the work performed, by submitting an FAA Form 337. Make an entry in the maintenance record of that equipment. Advise the aircraft owner/operator of the work performed.

A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to. draw two parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line. draw a single chord line across the circle and then a corresponding perpendicular bisector line across the chord line. draw two non-parallel chord lines across the circle and then a corresponding perpendicular bisector lines across each chord line.

Which would have an effect on aircraft CG results when conducting a weight and balance check?. Leaving the parking brake on. Leaving the parking brake off. Leaving the downlocks installed.

The rust or corrosion that occurs with most metals is the result of. blocking the flow of electrons in homogenous metals, or between dissimilar metals. electron flow in or between metals from cathodic to anodic areas. a tendency for them to return to their natural state.

(Refer to Figure 8.) With an ohmmeter connected into the circuit as shown, what will the ohmmeter read?. Infinite resistance. 10 ohms. 20 ohms.

How many of these factors are considered essential knowledge for x-ray exposure? 1) Processing of the film. 2) Material thickness and density. 3) Exposure distance and angle. 4) Film characteristics. One. Four. Three.

If a hot start occurs during starting of a turbine powerplant, what is the likely cause?. The ambient air temperature was too high (over 100 degrees F). The fuel/air mixture was excessively rich. The starting unit overheated.

Primary responsibility for compliance with Airworthiness Directives lies with the: Certificated mechanic who maintains the aircraft. Certificated mechanic holding an Inspection Authorization who conducts appropriate inspections. Aircraft owner or operator.

Which of the following statements is/are generally true regarding the charging of several aircraft batteries together? 1) Batteries of different voltages (but similar capacities) can be connected in series with each other across the charger, and charged using the constant current method. 2) Batteries of different ampere-hour capacity and same voltage can be connected in parallel with each other across the charger, and charged using the constant voltage method. 3) Batteries of the same voltage and same ampere-hour capacity must be connected in series with each other across the charger, and charged using the constant current method. 1 and 2. 3. 2 and 3.

What is the maximum penalty for cheating or other unauthorized conduct when taking an FAA mechanic test?. Ineligibility to receive any certificate or rating for one year, and suspension or revocation of any certificate held. Ineligibility to receive any certificate or rating for one year, and suspension of any certificate held. Ineligibility to receive any certificate or rating for one year.

Zone numbers on aircraft blueprints are used to. locate parts, sections, and views on large drawings. locate parts in the aircraft. indicate different sections of the aircraft.

Which statement regarding the hydrometer reading of a lead-acid storage battery electrolyte is true?. The hydrometer reading will give a true indication of the capacity of the battery regardless of the electrolyte temperature. A specific gravity correction should be added to the hydrometer reading if the electrolyte temperature is below 59°F. The hydrometer reading does not require a temperature correction if the electrolyte temperature is 80°F.

In an ac circuit, the effective voltage is. equal to the maximum instantaneous voltage. greater than the maximum instantaneous voltage. less than the maximum instantaneous voltage.

A gas or fluid line marked with the letters PHDAN is. used to carry a hazardous substance. a pneumatic or hydraulic system drain or discharge line. a dual-purpose pneumatic and/or hydraulic line for normal and emergency system use.

The result of 7 raised to the third power plus the square root of 39 is equal to. 343.24. 349.24. .34924.

When a charging current is applied to a nickel cadmium battery, the cells emit gas. throughout the charging cycle. especially if the electrolyte level is high. toward the end of the charging cycle.

Which is classified as a major repair?. Installation of new engine mounts obtained from the aircraft manufacturer. Any repair of damaged stressed metal skin. The splicing of skin sheets.

A fuel that does not vaporize readily enough can cause: Detonation. Vapor lock. Hard starting.

(Refer to Figure 54.) Compute the area of the trapezoid. 52.5 square feet. 76.5 square feet. 60 square feet.

If an engine fire develops during the starting procedures the first step you should take in extinguishing the fire is: Continue cranking to start the engine and blow out the fire. Discontinue the start attempt and allow the fireguard to extinguish the fire using the available equipment. Continue cranking and allow the fireguard to extinguish the fire using the available equipment.

What is the piston displacement of a master cylinder with a 1.5-inch diameter bore and a piston stroke of 4 inches?. 9.4247 cubic inches. 7.0686 cubic inches. 6.1541 cubic inches.

What size sheet of metal is required to fabricate a cylinder 20 inches long and 8 inches in diameter? (Note: C = pi x D). 20 inches x 24-9/64 inches. 20 inches x 25-5/32 inches. 20 inches x 25-9/64 inches.

Through which material will magnetic lines of force pass the most readily?. Aluminum. Iron. Copper.

(Refer to Figure 37.) The vertical distance between the top of the plate and the bottom of the lowest 15/64-inch hole is. 2.242. 2.367. 2.250.

(Refer to Figure 28.) Identify the bottom view of the object shown. 2. 1. 3.

If a double-acting actuating cylinder in a 3,000 psi system has a piston with a surface area of three square inches on the extension side, and a rod with a cross-section area of one square inch attached to the piston on the other side, approximately how much force will the actuator be able to produce when retracting?. 9,000 pounds. 6,000 pounds. 3,000 pounds.

Generally speaking, bolt grip lengths should be. one and one half times the thickness of the material which is fastened together. equal to the thickness of the material which is fastened together, plus approximately one diameter. equal to the thickness of the material which is fastened together.

What is the total capacitance of a certain circuit containing three capacitors with capacitances of .25 microfarad, .03 microfarad, and .12 microfarad, respectively? (Note: C(T) = C(1) + C(2) + C(3)). .4 uF. .04 uF. .04 pF.

Which of these nondestructive testing methods is suitable for the inspection of most metals, plastics, and ceramics for surface and subsurface defects?. Magnetic particle inspection. Ultrasonic inspection. Eddy current inspection.

According to Dr. James Reason, there are two types of human failure which can occur. They are: active and latent. mental and physical. proper and improper.

(Refer to Figure 16.) With power to the bus and the fuel selector switched to the right-hand tank, how many relays in the system are operating?. Four. Three. Two.

Where is an AN clevis bolt used in an airplane?. Where external tension loads are applied. For tension and shear load conditions. Only for shear load applications.

(Refer to Figure 69.) Solve the equation. 76. 60. 12.

Find the value of 10 raised to the negative sixth power. 0.000001. 0.0001. 0.0001.

Which of the following are commonly used as rectifiers in electrical circuits? 1) Anodes. 2) Cathodes. 3) Diodes. 3, 2. 3. 3, 1.

Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired. only by replacing the tubing section run (connection to connection) using the same size and material as the original. by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends. by cutting out the damaged section and soldering in a replacement section of tubing.

Magnetic particle inspection is used primarily to detect. deep subsurface flaws. distortion. flaws on or near the surface.

If electrolyte from a lead-acid battery is spilled in the battery compartment, which procedure should be followed?. Apply sodium bicarbonate solution to the affected area followed by a water rinse. Rinse the affected area thoroughly with clean water. Apply boric acid solution to the affected area followed by a water rinse.

In examining and evaluating a welded joint, a mechanic should be familiar with. likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition. the parts, proportions, and formation of a weld. the welding technique, filler material, and temperature range used.

Which of the following statements is/are correct in reference to flare fittings? 1) AN fittings have an identifying shoulder between the end of the threads and the flare cone. 2) AC and AN fittings are considered identical except for material composition and identifying colors. 3) AN fittings are generally interchangeable with AC fittings of compatible material composition. 1 and 3. 1. 1, 2, and 3.

An engine develops 108 horsepower at 87 percent power. What horsepower would be developed at 65 percent power?. 61. 70. 81.

John and Nancy have been tasked with completing a hydraulic pump inspection. John is 5 feet 9 inches tall. Nancy is 5 feet 6 inches tall. What could result if Nancy is not tall enough to accomplish the task?. Personal reference. Complacency. Human error.

A thermal switch, or thermal protector, as used in an electric motor, is designed to. reroute the circuit to ground. close the integral fan circuit to allow cooling of the motor. open the circuit in order to allow cooling of the motor.

Which condition is an indication of improperly torqued cell link connections of a nickel-cadmium battery?. Light spewing at the cell caps. Toxic and corrosive deposits of potassium carbonate crystals. Heat or burn marks on the hardware.

Select the decimal which is most nearly equal to 77/64. 0.08311. 1.2031. 0.8311.

Where is the record of compliance with Airworthiness Directives or manufacturers' service bulletins normally indicated?. Aircraft maintenance records. Flight manual. FAA Form 337.

What does the acronym TSO mean regarding a type certificated aircraft part, material, component and/or process?. Technical Standard Order. Training Specific Organization. Type Supplement Original.

In a P-N-P transistor application, the solid state device is turned on when the. In a P-N-P transistor application, the solid state device is turned on when the. base is negative with respect to the emitter. emitter is negative with respect to the base.

What should be done to prevent rapid deterioration when oil or grease come in contact with a tire?. Wipe the tire thoroughly with a dry cloth, and then rinse with clean water. Wipe the tire with a dry cloth followed by a washdown and rinse with soap and water. Wipe the tire with a cloth dampened with aromatic naphtha and then wipe dry with a clean cloth.

Each person performing an annual or 100-hour inspection shall use a checklist that contains at least those items in the appendix of: 14 CFR Part 43. AC 43.13-3. 14 CFR Part 65.

What is the likely result of servicing and charging nickel-cadmium and lead acid batteries together in the same service area?. Reduced battery service life for both types of batteries. Contamination of both types of batteries. Lowered amp-hour capacities for both types of batteries.

Weathervaning tendency is greatest when taxiing: Both nosewheel and tailwheel-type airplanes in a quartering tailwind. A nosewheel-type airplane in a quartering headwind. A tailwheel-type airplane in a direct crosswind.

What is the ratio of a gasoline fuel load of 200 gallons to one of 1,680 pounds?. 2:3. 5:7. 5:42.

The twist of a connecting rod is checked by installing push-fit arbors in both ends, supported by parallel steel bars on a surface plate. Measurements are taken between the arbor and the parallel bar with a. dial gauge. height gauge. thickness gauge.

The method used to rapidly charge a nickel-cadmium battery utilizes. constant current and varying voltage. constant voltage and varying current. constant current and constant voltage.

What is the class of working drawing that is the description/depiction of a single part?. Installation drawing. Assembly drawing. Detail drawing.

Which regulation provides information regarding instrument range markings for an airplane certificated in the normal category?. 14 CFR Part 25. 14 CFR Part 23. 14 CFR Part 21.

(Refer to Figure 39.) Determine the cable size of a 40-foot length of single cable in free air, with a continuous rating, running from a bus to the equipment in a 28-volt system with a 15-ampere load and a 1-volt drop. No. 18. No. 10. No. 11.

Who is responsible for making the entry in the maintenance records after an annual, 100 hour, or progressive inspection?. The person approving or disapproving for return to service. The designee or inspector representing the FAA Administrator. The owner or operator of the aircraft.

Diodes are used in electrical power supply circuits primarily as. rectifiers. switches. relays.

The main rotor system on a helicopter is classified in three groups. Which of those listed is NOT one of these groups?. The semi-rigid rotor system. The flexible-beam rotor system. The fully articulated rotor system.

In performing a dye penetrant inspection, the developer. thoroughly cleans the surface prior to inspection. acts as a blotter to produce a visible indication. seeps into a surface crack to indicate the presence of a defect.

Which aircraft record entry is the best description of the replacement of several damaged heli-coils in a casting?. Eight 1/4 -- 20 inch standard heli-coils were installed in place of damaged ones. Eight 1/4 -- 20 inch standard heli-coil inserts were repaired by replacing the damaged inserts with a lock-type insert, after the tapped holes were checked for corrosion. Eight 1/4 -- 20 inch standard heli-coils were replaced. The damaged inserts were extracted, the tapped holes gaged, then new inserts installed, and tangs removed.

In the theory of weight and balance, what is the name of the distance from the fulcrum to an object?. Lever arm. Fulcrum arm. Balance arm.

An FAA Form 337 is used to record and document: Preventive and unscheduled maintenance and special inspections. Major repairs and major alterations. Major and minor repairs, and major and minor alterations.

Which number represents the vernier scale graduation of a micrometer?. .00001. .001. .0001.

Maximum zero fuel weight is the. dry weight plus the weight of full crew, passengers, and cargo. maximum permissible weight of a loaded aircraft (passengers, crew, and cargo) without fuel. basic operating weight without crew, fuel, and cargo.

A person installing a product, part, or appliance on a type certificated product must make certain that the item's records document what type of statement?. The product, part, or material meets FAA airworthiness standards. The product or material was not produced under an FAA production approval. A product produced by an owner or operator does not need a statement.

When computing weight and balance, an airplane is considered to be in balance when. the movement of the passengers will not cause the moment arms to fall outside the CG range. all moment arms of the plane fall within CG range. the average moment arm of the loaded airplane falls within its CG range.

When a Teflon hose has been in service for a time, what condition may have occurred and/or what precaution should be taken when it is temporarily removed from the aircraft?. The hose may have developed a set, or have been manufactured with a pre-set shape, and must be supported to maintain its shape. The hose interior must be kept wet with the fluid carried to prevent embrittlement/deterioration. The hose may become stiff and brittle if not flexed or moved regularly.

(Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow. 1. 2. 3.

The voltage drop in a circuit of known resistance is dependent on. the voltage of the circuit. only the resistance of the conductor and does not change with a change in either voltage or amperage. the amperage of the circuit.

In a parallel circuit with three 6-ohms resistors across a 12-volt battery, what is the total current (It) value in the circuit?. 12 amps. 2 amps. 6 amps.

Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to. clean, lightly oiled threads. both dry and lightly oiled threads. clean, dry threads.

Which of the following hose materials are compatible with phosphate-ester base hydraulic fluids? 1) Butyl. 2) Teflon. 3) Buna-N. 4) Neoprene. 2 and 4. 1 and 3. 1 and 2.

In a sectional view drawing, what sections illustrate particular parts of an object?. Removed. Revolved. Half.

An aircraft Type Certificate Data Sheet contains: Maximum fuel grade to be used. Control surface adjustment points. Location of the datum.

A hung start in a jet engine is often caused by: The starter cutting off too soon. Malfunctions in the ignition system. An excessively rich fuel/air mixture.

Capacitors are sometimes used in dc circuits to. smooth out slight pulsations in current/voltage. counteract inductive reactance at specific locations. assist in stepping voltage and current up and/or down.

The speed of sound in the atmosphere is most affected by variations in which of the following? 1) Sound frequency (cps). 2) Ambient temperature. 3) Barometric pressure. 1. 2. 3.