AME-S F2

How do you avoid brittleness when welding steel alloy?. Anneal before welding. Anneal after welding. Heat treat before welding. Heat treat after welding.

In a sleeve repair involving an inner tube and an outer sleeve, the diameter of a solid rivet passing through both tubes should be equal to 1/8 of: The outside diameter of the outer tube. The outside diameter of the inner tube. The inside diameter of the inner tube. The wall thickness of the tubes.

On the outside of a tube that has been bent, it is under what load?. Compression. Torsion. Tension. Shear.

What is the most commonly used patch?. Surface patch. Scarfed patch. Splayed patch. Plug patch.

The classification for high tensile strength fiberglass used in aircraft is: E-glass. S-glass. C-glass. A-glass.

What is the classification of fiberglass reinforcement material that has high electrical resistivity and is the most commonly used?. E-glass. S-glass. C-glass. A-glass.

What speed should you use when drilling stainless steel?. 300–1000 rpm. 100–750 rpm. 1200–1500 rpm. 3000–5000 rpm.

What is the most commonly used fabric on aircraft?. Linen. Polystyrene. Nylon. Polyester.

When exceptionally good drainage and ventilation is desired in fabric-covered aircraft, what is used?. Neoprene grommets. Seaplane grommets. Metal grommets. Rubber grommets. Plastic or nylon grommets.

Fabric per inch is measured in what?. Twists per inch (TPI). Threads per inch. Waves per inch. Fibers per inch (FPI).

When straightening a non-heat-treated tube that is buckled or bent, what does it become?. Hardened and brittle. Softer and more ductile. Work-hardened and fragile. Stiff and prone to cracking.

How do you weld a high-stress fitting to a tubular structure?. Tack weld on one side only. Through tube weld, welded on both sides. Fillet weld on the outside only. Single-pass weld without backing.

In a 2024-T3 aluminum tube, how do you install a rivet going directly through both walls?. Use a small-head hammer lightly. Fully hammer the rivet with a heavy mallet. Use a drill to expand the hole and press-fit the rivet. Weld the rivet in place.

A piece of .032" 2024-T3 aluminum is to be bent. What should be the drill size for relief holes?. 1/8". 5/32". 3/16". None of the above.

Where is the squat switch located in a landing gear?. Landing gear strut. Main landing gear brace. Swivel plate. Shock absorber assembly.

How do you set up a basic hydraulic system?. Power source, means to transmit power, and a device to use the power. Energy source, medium to transfer force, and actuator. Pump, fluid lines, and load device. Reservoir, pressure source, and control device.

Fuel for a fuel jettison system is pumped by means of: Gravity. Boost pump. Engine-driven pump. Manual hand pump.

In aircraft sheet metal work, what does “lay out” mean?. Arranging tools for assembly. Making lines for cutting and bending. Marking and measuring in accordance with AC 43.13-1B. Checking dimensions after forming.

Three plates of 0.040" 2024-T3 aluminum are to be riveted together. Which solid rivet is recommended?. A. MS20470-5-3. B. MS20470-5-4. C. MS20470-4-4. D. MS20470-4-3.

What type of fire is Type B?. Ordinary combustible material such as wood, cloth, and paper. Fire involving flammable liquids (gas, oil, fluids, etc.). Magnesium fire. Electrical equipment fire.

Which type of NDT inspection is the most common method used on composites today?. Magnetic particle inspection. Ultrasonic testing. Dye penetrant inspection. Radiographic inspection.

When forming an aluminum box, where should relief holes be drilled?. At the intersection of the inner bend tangent lines. Along the outside bend radius. In the center of each panel. Only at the ends of the box.

The engine mounts can be constructed from: Welded alloy steel tubing. Formed sheet metal. Forged alloy fittings. All of the above.

Which is the correct formula to calculate the number of rivets required in a repair?. RPI = T × 75,000 / DSS. RPM = DSS × 75,000. RPM = 75,000 / T × DSS. RPM = DSS / 75,000.

Which of the following statements about painting aircraft is true? A. Aircraft paint stripper removes paint by wrinkling and swelling it, causing it to pull away from the surface B. The wax-like film left on the surface after using paint stripper cannot be removed using lacquer thinner C. Aircraft surface finish can be removed by using a bead blaster with plastic beads D. Fine thread lines under a paint surface are normally filiform corrosion. Only A. A and D. A, C and D. Only D.

Which of the following statements is NOT true?. Zinc chromate is green. Zinc chromate is yellow. Zinc chromate must conform to MIL-SPEC A-8085. Zinc chromate can be used on ferrous and non-ferrous metals.

Aluminum that is heated nearly to its melting point (plastic state) and then forced through a set of dies is called: Extrusion. Joggle. Forming. Bend.

In sheet metal bending, what does the K-value represent?. The distance between the seat back and the bend radius. The ratio between material thickness and bend radius. The tangent of one-half of the bend angle. The location of the neutral line measured from the outer surface.

What is the definition of bend allowance (BA) in sheet metal work?. The total length of material removed during bending. The distance between the inside radius and the outside radius of a bend. The length of the curved portion of the neutral line within the bend. The straight length of material before and after the bend.

In an aircraft with a pressurized cabin, which parameter does the automatic pressure regulator primarily control?. The temperature of the air supplied to the cabin. The internal pressure of the cabin. The flow of fuel to the engines. The indicated speed of the plane.

Common types of foam cores used in aircraft composite construction are: Styrofoam, urethane foam, polyvinyl chloride (PVC), and Strux. Aluminum, Nomex and fiberglass. Epoxy resin and phenolic resin only. Titanium and carbon steel.

Manufacturers construct honeycomb cores from: Titanium and magnesium only. Fibreglass, paper, aluminium, kevlar, carbon and steel. Solid laminate composite only. Wood and rigid foam.

When a landing gear safety switch on a main gear strut closes at liftoff, which system is deactivated?. Antiskid system. Aural warning system. Landing gear position system.

Rivet gauge, or transverse pitch is the distance between the. Center of rivets in adjacent rows. Centers of adjacent rivets in the same row. Heads of rivets in the same row.

What is generally the best procedure to use when removing a solid shank rivet?. Drill to the base of the manufactured rivet head with a drill one size smaller than the rivet shank and remove the rivet with a punch. Drill through the manufactured head and shank with a drill one size smaller than the rivet and remove the rivet with a punch. Drill through the manufactured head and shank with a shank size drill and remove the rivet with a punch.

If a streamline cover plate is to be hand formed using a form block, a piece of dead soft aluminum should first be placed over the hollow portion of the mold and securely fastened in place. The bumping operation should be. Started by tapping the aluminum lightly around the edges and gradually working down into the center. Distributed evenly over the face of the aluminum at all times rather than being started at the edges or center. Started by tapping the aluminum in the center until it touches the bottom of the mold and then working out in all directions.

Annealing of aluminium. Increses the tensile strength. Makes the material brittle. Removes stresses caused by forming.

When bending metal, the material on the outside of the curve stretches while the material on the inside of the curve compresses. That part of the material which is not affected by either stress is the. Mold line. Bend tangent line. Neutral line.

What is a retentive fiber in composite materials?. A fiber that improves electrical conductivity of the composite. A fiber that acts as a surface veil for UV protection. A fiber that helps retain resin and improve adhesion within the composite. A fiber used only for temporary repair patches.

What is a structural fiber in composite materials?. A fiber used only for aesthetic surface finish. A fiber used only to increase electrical conductivity. A fiber that is dissolved in resin to form a coating. A high-strength fiber used to carry load and provide reinforcement in a composite.

What is the correct orientation of the plies in a fabric covering when using the warp and weft (clock) method?. Warp yarns run diagonally, and weft yarns run parallel to the fuselage. Warp yarns run perpendicular to the fuselage, and weft yarns run parallel. Warp yarns run parallel to the fuselage, and weft (fill) yarns run perpendicular to the fuselage. Warp yarns run in a circular pattern, and weft yarns run in a straight line.

What is the warp direction of wood with respect to the fuselage?. The grain running perpendicular to the fuselage centerline. The grain running at 45° to the fuselage centerline. The grain running parallel to the fuselage centerline. The grain running diagonal to the fuselage longerons.

What is an I-beam?. A beam consisting of two flanges connected by a vertical web. A beam with a cross section like a double T, with two parallel webs connected by flanges. A beam with a rectangular hollow section, reinforced at the edges. A beam with a T-shaped cross section, consisting of a single flange and web.

What is a “splayed patch” in sheet metal repair?. A patch installed with a double-lap joint for maximum strength. A patch that is installed using adhesive bonding only. A patch with tapered edges or beveled to provide smooth transition and reduce stress concentration. A patch made of a thicker material than the parent metal.

What is meant by the “slope of the grain” in aircraft wood?. The difference between the grain and the growth rings. The deviation of the grain from the edge of the wood. The angle between the grain direction and the length of the wood. The number of knots per square inch of wood.

If the fabric is sound but the dope coating is cracked, what is the correct action?. Replace the fabric and dope the surface again. Apply a new layer of dope directly over the cracked surface. Apply a sealant over the cracks to stop further deterioration. It may be treated with rejuvenator.

How is fabric rejuvenator correctly mixed before application?. Mixed with water to activate curing. Used undiluted to restore flexibility. Mixed with an approved solvent containing plasticizers. Mixed only with retarder to slow drying.

What is the most suitable wood commonly used in aircraft structures, and how is it classified?. Douglas fir, Group B. Birch plywood, Group C. Sitka spruce, Group A. Mahogany, Group D.

When repairing a 1-inch tube using an outer sleeve splice, what is the maximum allowable inside diameter of the outer sleeve?. 1.000", 1-1/8". 1.031", 3/16". 1.0625",1-1/16". 1.125", 5/32".

What is a cluster in aircraft structures?. A group of rivets installed in close proximity. A reinforcement plate used at tube intersections. A group of structural members joined together at one point. A laminated joint used in composite repairs.

How is a structure described in which a perpendicular member is cut to fit a longitudinal member, and diagonal members are then cut to fit the other pieces?. Gusset joint. Truss intersection. Cluster. Lap joint.

Under Transport Canada regulations, which standard primarily governs structural wing repairs?. CARs Standard 523. CARs Standard 625. CARs Standard 571. CARs Part V.

What portion of a bend is defined as the bend allowance?. The straight length between bends. The distance between mold lines. The material located between the bend tangent lines. The thickness of the bent material.

What is the bend tangent line. The centerline of the bend radius. The line representing the neutral axis. The line where the metal starts and stops curving during a bend. The extension of the mold line beyond the bend.

What is the mold line dimension. The actual measured length of the finished part. The distance between bend tangent lines. The dimension formed by the intersection of mold lines, assuming no bend radius. The length of the curved portion of the bend.

Which term describes an extension of the flat surface of a part beyond the bend radius?. Tangent line. Mold line. Neutral line. Bend tangent line.

When forming a bend other than 90°, what factor must be used to determine setback?. Bend allowance factor. Neutral axis factor. K-factor. Mold line dimension.

For a 90° bend, how is setback calculated?. Inside radius only. Metal thickness only. Inside bend radius plus the thickness of the metal. Bend allowance divided by two.

What is the definition of setback in sheet metal bending?. The distance between the mold line and the neutral axis. The distance jaws of a brake must be set back from the mold line to form a bend. The length of the curved portion of metal in a bend. The distance between bend tangent lines.

What is the cause of “blushing” when applying dope to aircraft fabric?. Slow drying of dope due to low temperature. Contamination of the dope with oil or grease. Rapid drying of dope when humidity is comparatively high (above about 65%). Using an incorrect dope thinner ratio.

Which statement is correct concerning a rivet installation with a shank-side countersink. A NACA rivet is installed by countersinking the manufactured head only. A shank-side countersink indicates an incorrectly installed rivet. NACA rivet installation, shank must be 82° countersink, the rivet gun be used on head or shank. NACA rivets require a 100° countersink and must be driven from the head side only.