Which is true? & Enumeration

Liquid penetrant inspection methods may be used on which of the following?

- ferrous metals, nonferrous metals, nonporous plastics

acceptable to use when utilizing chemical cleaning and/or depainting/stripping agents on aircraft?

-Cotton fiber wiping cloths when using a flammable agent, Atomizing spray equipment

use to detect cracks open to the surface in aluminum forgings and castings?

-Dye penetrant inspection, Eddy current inspection, Ultrasonic inspection, Visual inspection.

affect the inlet air density of a turbine engine?

-Speed of the aircraft, Altitude of the aircraft, Ambient temperature

correct in reference to flare fittings?

1. AN fittings have an identifying shoulder between the end of the threads and the flare cone.

typical large transport aircraft fuel manifold system allows

1. All tanks can be serviced through a single connection. 2. Any engine can be fed from any tank. 3. All engines can be fed from all tanks simultaneously. 4. A damaged tank can be isolated from the rest of the fuel system.

aircraft engine propulsion

1. An engine driven propeller imparts a relatively small amount of acceleration to a large mass of air. 2. Turbojet and turbofan engines impart a relatively large amount of acceleration to a smaller mass of ai

defects are not acceptable for metal lines?

1. Cracked flare 2. Seams 3. Dents in the heel of a bend less than 20% of the diameter 5. Dents in straight section that are 20% of tube diameter

cause fan blade shingling in a turbofan engine?

1. Engine over speed 4. FOD.

sometimes used as authorization to deviate from an aircraft's original type design?

1. FAA Form 337. 2. Supplemental Type Certificate. 3. Airworthiness Directive.

will cause an engine to have an increased tendency to detonate

1. High manifold pressure 2. High intake air temperature. 3. Engine overheated.

characteristic of aramid fiber (Kevlar) composites

1. High tensile strength. 2. Flexibility.

The action required by an AD may take what form?

1. Inspection. 2. Part(s) replacement. 3. Design modification. 4. Change in operating procedure(s)

Which of the following could result if microbial growth exists in a jet fuel tank and is not corrected?

1. Interference with fuel flow. 2. Interference with fuel quantity indicators. 4. Electrolytic corrosive action in a metal tank.

four general types of fuel quantity gauges

1. Sight glass. 2. Mechanical. 3. Electrical. 4. Electronic.

affect the thermal efficiency of a turbine engine?

1. Turbine inlet temperature. 2. Compression ratio. 5. Turbine and compressor efficiency.

Proper pre-preg composite lay-up curing

1. applying external heat. 4. applying pressure.

s exposed to high temperatures may only be marked with such materials as allowed by the manufacturer

1. layout dye. 2. commercial felt tip marker. 4. chalk.

when added to wet resins, provide strength for the repair of damaged fastener holes in composite panels

2. Flox. 3. Chopped fibers.

harmful to aircraft tires

2. Fuel. 3. Oil. 4. Ozone 6. Electrical equipment. 7. Hydraulic fluid. 8. Solvents

benefits of using microballoons when making repairs to laminated honeycomb panels?

2. Improved strength to weight ratio. 3. Less density 4. Lower stress concentrations

characteristic of carbon/graphite fiber composites

2. Stiffness. 3. High compressive strength. 4. Corrosive effect in contact with aluminum.

used to inspect fiberglass/honeycomb structures for entrapped water?

2. X-ray. 3. Backlighting.

used to accomplish internal inspection of an assembled turbine engine?

3. A borescope.

considered essential knowledge for x-ray exposure

3. Exposure distance and angle.

decrease volumetric efficiency in a reciprocating engine?

3. Improper valve timing. 4. Sharp bends in the induction system. 5. High carburetor air temperatures.

may be inspected using the magnetic particle inspection method?

3. Iron alloys.

sequences of steps, indicate the proper order you would use to make a single flare on a piece of tubing:

3. Slip the fitting nut and sleeve on the tube. 1. Place the tube in the proper size hole in the flaring block. 6. Center the plunger or flaring pin over the tube. 2. Project the end of the tube slightly from the top of the flaring tool, about the thickness of a dime. 5. Tighten the clamp bar securely to prevent slippage. 4. Strike the plunger several light blows with a lightweight hammer or mallet and turn the plunger one- half turn after each blow. 3,1,6,2,5,4

desired effects of using Alodine on aluminum alloy?

A slightly rough surface,Increased corrosion resistance.

Determining the wire size to use for an aircraft installation

Allowable power loss, Permissible voltage drop, Current carrying capacity of the conductor, Type of load (continuous or intermittent)

acceptable to use in cleaning anodized surfaces?

Aluminum wool, Fiber bristle brush.

Major parts of DC motor

Armature Assembly, field assembly, brush assembly, end frame

(1) Bonded clamps are used for support when installing metal tubing. (2) Unbonded clamps are used for support when installing wiring.

Both 1 and 2 are true

(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.

Both no. 1 and 2 are true

(1) There are three basic types of dc motors; series, shunt, and compound. (2) In the series motor, the field windings, consisting of relatively few turns of heavy wire, are connected in series with the armature winding.

Both no. 1 and no. 2 are true

hose materials are compatible with phosphate-ester base hydraulic fluids

Butyl, Teflon

lubricating (reducing friction between moving parts)

Cools, Seals, Cleans, Prevents corrosion, Cushions impact (shock) loads.

Military Standard (MS) flareless fittings is/are correct?

During installation, MS flareless fittings are normally tightened by turning the nut a specified amount, rather than being torqued.

Selecting hardware for attaching bonding connections to an aircraft structure

Mechanical strength, Ease of installation, Type of load (continuous or intermittent)

true regarding tiedown of small aircraft

Nylon or dacron rope is preferred to manila rope

(1) In the corrosion process, it is the cathodic area or dissimilar cathodic material that corrodes. (2) In the Galvanic or Electro-Chemical Series for metals, the most anodic metals are those that will give up electrons most easily.

Only 2 is true

(1) Serviceability limits for turbine blades are much more stringent than are those for turbine nozzle vanes. (2) A limited number of small nicks and dents can usually be permitted in any area of a turbine blade.

Only no. 1 is true

(1) When performing a ring (coin tap) test on composite structures, a change in sound may be due to damage or to transition to a different internal structure. (2) The extent of separation damage in composite structures is most accurately measured by a ring (coin tap) test

Only no. 1 is true

characteristic of carbon/graphite fiber composites

Stiffness High compressive strength Corrosive effect in contact with aluminum

establishing the maximum compression ratio limitations of an aircraft engine?

Three 1. Detonation characteristics of the fuel used. 2. Design limitations of the engine. 3. Degree of supercharging. three

(1) Fuel may be used to cool oil in gas turbine engines. (2) Ram air may be used to cool oil in gas turbine engines.

both NO.1 and No. 2 are true

(1) Wet sump oil systems are most commonly used in gas turbine engines. (2) In most turbine engine oil tanks, a slight pressurization of the tank is desired to ensure a positive flow of oil.

both NO.1 and No. 2 are true

(1) Cast iron piston rings may be used in chrome-plated cylinders. (2) Chrome-plated rings may be used in plain steel cylinders.

both no. 1 and 2 are true

(1) A fuel heater can use engine bleed air as a source of heat. (2) A fuel heater can use engine lubricating oil as a source of heat.

both no. 1 and no. 2 are true

(1) A fuel pressure gauge is a differential pressure indicator. (2) A fuel pressure gauge indicates the pressure of the fuel entering the carburetor.

both no. 1 and no. 2 are true

(1) Airworthiness Directives are Federal Aviation Regulations and must be complied with unless specific exemption is granted. (2) Airworthiness Directives of an emergency nature may require immediate compliance upon receipt.

both no. 1 and no. 2 are true

(1) Gas-turbine-engine fuel systems are very susceptible to the formation of ice in the fuel filters. (2) A fuel heater operates as a heat exchanger to warm the fuel.

both no. 1 and no. 2 are true

(1) In a turbine engine axial-flow compressor, each consecutive pair of rotor and stator blades constitutes a pressure stage. (2) In a turbine engine axial-flow compressor, the number of rows of stages is determined by the amount of air and total pressure rise required.

both no. 1 and no. 2 are true

(1) The fuel jettison valve must be designed to allow flight personnel to close the valve during any part of the jettisoning operation. (2) During the fuel jettisoning operation, the fuel must discharge clear of any part of the airplane.

both no. 1 and no. 2 are true

(1) Accumulation of contaminates in the compressor of a turbojet engine reduces aerodynamic efficiency of the blades. (2) Two common methods for removing dirt deposits from turbojet engine compressor blades are a fluid wash and an abrasive grit blast.

both no.1 and 2 are true

(1) The mixture used at rated power in air cooled reciprocating engines is richer than the mixture used through the normal cruising range. (2) The mixture used at idle in air cooled reciprocating engines is richer than the mixture used at rated power.

both no.1 and no. 2 are true

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.

both no.1 and no. 2 are true

annealing steel and aluminum alloys?

decrease in internal stress, softening of the metal.

Engine crankshaft runout is usually checked

during engine overhaul, after a 'prop strike' or sudden engine stoppage.

(1) Manufacturer's data and FAA publications such as Airworthiness Directives, Type Certificate Data Sheets, and advisory circulars are all approved data. (2) FAA publications such as Technical Standard Orders, Airworthiness Directives, Type Certificate Data Sheets, and Aircraft Specifications and Supplemental Type Certificates are all approved data.

only 2 is true

(1) Gas turbine and reciprocating engine oils can be mixed or used interchangeably. (2) Most gas turbine engine oils are synthetic.

only No. 2 is true

(1) A fuel pressure relief valve is required on an aircraft positive-displacement fuel pump. (2) A fuel pressure relief valve is required on an aircraft centrifugal fuel boost pump.

only no. 1 is true

(1) Jet fuel is of higher viscosity than aviation gasoline and therefore holds contaminants better. (2) Viscosity has no relation to contamination of fuel.

only no. 1 is true

(1) On a large aircraft pressure refueling system, a pressure refueling receptacle and control panel will permit one person to fuel or defuel any or all fuel tanks of an aircraft. (2) Because of the fuel tank area, there are more advantages to a pressure fueling system in light aircraft.

only no. 1 is true

(1) The Federal Aviation Regulations require approval after compliance with the data of a Supplemental Type Certificate. (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.

only no. 1 is true

(1) The function of a fuel heater is to protect the engine fuel system from ice formation. (2) An aircraft fuel heater cannot be used to thaw ice in the fuel screen.

only no. 1 is true

(1) If aviation gasoline vaporizes too readily, fuel lines may become filled with vapor and cause increased fuel flow. (2) A measure of a gasoline's tendency to vapor lock is obtained from the Reid vapor pressure test.

only no. 2 is true

(1) Propellers are NOT included in the Airworthiness Directive system. (2) A certificated powerplant mechanic may make a minor repair on an aluminum propeller and approve for return to service.

only no. 2 is true

(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.

only no.1 is true

occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending?

the metals become cold worked, strain or work hardened.