FAA ORAL QUESTIONS - AIRCRAFT DRAWINGS

Question 1

8103. What type of line is normally used in a drawing or blueprint that indicates invisible edges or contours?

A-Medium-weight short dashes evenly spaced.
B-Medium-weight very short dashes evenly spaced.
C- Thin-weight, one long and two short dashes evenly spaced.

Answer 1

A

A medium-weight dashed line is called a hidden line and is used to show an edge or object not visible to the viewer.

A medium solid line is used as a visible outline or object line. Alternate short and long light dashes are used to show a center line.

(AM.I.B.K1)- FAA-H-8083-30

Question 2

8104. (Refer to Figure 27.) In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.

A. 1
B. 3
C. 2

Answer 2

B

View 3 shows the aileron balance weight as seen from the direction shown by the arrow. This view shows the outline of the weight and the outline of the hole. Both of these are drawn as solid lines. The two bolt holes are shown as light dashed lines (hidden lines), and there are also two hidden lines that show the break lines where the radius begins for the tip of the weight.

(AM.I.B.K1)- FAA-H-8083-30

Question 3

8106. (Refer to Figure 28.) Identify the bottom view of the object shown.
      A. 2
      B. 3
      C. 1

Answer 3

A

View 2 shows the part as it would be seen looking up at it from the bottom. The vertical lines are hidden. View 1 is not a correct orthographic view of this part. View 3 is not a correct orthographic view of this part.

(AM.I.B.K1) - FAA-H-8083-30

Question 4

8109. (Refer to Figure 29.) Identify the left side view of the object shown.
      A. 1
      B. 2
      C. 3

Answer 4

C

View 3 is the left side. The horizontal surface is shown as a hidden line. View 1 is the right side. We see the horizontal surface as a visible line. View 2 is the bottom view. The vertical surface is shown as a hidden line.

(AM.I.B.K1)-FAA-H-8083-30

Question 5

8110-1. What type of drawing line consists of alternating long and short lines?

A. Dimension
B. Center
C. Hidden

Answer 5

B

Center lines are made up of alternate long and short dashes. They indicate the center of an object or part of an object. Where center lines cross, the short dashes intersect symmetrically. In the case of very small circles, the center lines may be shown unbroken. (AM.I.B.Kt)FAA-H-8083-30

Question 6

8111. (Refer to Figure .30.) Identify the bottom view of the object.
      A. 1
      B. 2
      C. 3

Answer 6

A

View 1 is the bottom. The two vertical surfaces are shown as hidden lines. View 2 fs the left side. The two horizontal surfaces are shown as hidden lines. View 3 is the top view. The two vertical surfaces are shown as visible lines.

(AM.I.B.K1) - FAA-H-8083-30

Question 7

8114. Which statement is applicable when using a sketch for making a part?

A. The sketch may be. used only if supplemented with three-view orthographic projection drawings.
B. The sketch must show all information to manufacture the part.
C. The sketch need not show all necessary construction detail~.

Answer 7

B

A sketch is a simple, rough drawing made rapidly and without much detail. A sketch is frequently drawn for use in manufacturing a replacement part. Such a sketch must provide all necessary information to those persons who must manufacture the part.

(AM.I.B.K1)- FAA-H-8083-30

Question 8

8115. (Refer to Figure 32.) What is the next step required for a working sketch of the illustration?

A. Darken the object outlines.
B. Sketch extension and dimension lines.
C. Add notes, dimensions, title, and date.

Answer 8

B

In the sketch shown here, the part has already been blocked in, details have been added, the visible lines darkened, and the hidden lines added. The next step is to sketch in the extension lines and the dimension lines.

(AM.I.B.K1-) FAA-H-8083-30

Question 9

8116. For sketching purposes, almost all objects are composed of one or some combination of six basic. shapes; these include the

A. angle, arc, line, plane, square, and circle.
B. triangle, circle, cube, cylinder, cone, and sphere.
C. triangle, plane, circle, line, square, and sphere.

Answer 9

B

Almost all objects are composed of one or some combination of the triangle, 1circle, cube, cylinder, cone, and sphere.

(AM.I.B.Kt) - FAA-H-8083-30

Question 10

8116-1. In a sectional view drawing, what sections illustrate particular parts of an object?

A. Removed.
B. Revolved.
C. Half.

Answer 10

A removed section illustrates particular parts of an object. It is similar to revolved sections, except it is placed at one side and, to bring out pertinent details, often drawn to a larger scale than the main view on which it is indicated.

(AM.I.B.K1) - FAA-H-8083-30

Question 11

8117-1. A simple way to find the center of a circle on a sketch or drawing, or a circular piece of material is to

A. Draw two non-parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line.
B. Draw two parallel chord lines across the circle and then a corresponding perpendicular bisector line across each chord line.
C. Draw a single chord line across the circle and then a corresponding perpendicular bisector line across each chord line.

Answer 11

A

An easy way to find the center of a circle on a sketch is to draw two non-parallel chord lines across the circle.
Then, draw a perpendicular bisector of each of these chord lines. The bisector lines will cross at the center of the circle.

(AM.I.B.K1-) FAA-H-8083-30

Question 12

8120. Sketches are usually made easier by the use of

A. Graph paper.
B. Plain white paper.
C. Artist’s paper.

Answer 12

A

Sketches are easily made by using graph paper, which is available, ruled with light lines, in either four or five squares to the inch.

(AM.I.B.K1) - FAA-H-8083-30

Question 13

8120-1.

(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,
A. Only 1 is true.
B. Only 2 is true.
C. Neither 1 nor 2 is true.

Answer 13

C

Sketches are simple drawings made without the use of tools. It is easier to do a sketch on graph paper where dimensions are easier to visualize without using tools such as a ruler.

(AM.I.B.K1) - FAA-H-8083-30

Question 14

8121. What material symbol is frequently used in drawings to represent all metals?

A. Steel.
B. Cast iron.
C. Aluminum.

Answer 14

B

If the exact specifications of a material are shown on the drawing, the easily drawn symbol for cast iron is used for the sectioning, and the material specification is listed in the bill of materials or indicated in a note.

(AM.I.B.K1)FAA-H-B0B3-30

Question 15

8121-1. What is used to indicate that a surface must be machine finished?

A. Text.
B. Leader lines.
C. Finished marks.

Answer 15

C

By using finished marks a drawing identifies those surfaces that must be machine finished.

(AM.I.B.K1) - FAA-H-8083-30

Question 16

8130. Zone numbers on aircraft blueprints are used to

A. Locate parts, sections, and views on large drawings.
B. Indicate different sections of the aircraft.
C. Locate parts in the aircraft.

Answer 16

A

Large drawings used for manufacturing aircraft are zoned to make it easy to locate parts, sections, and views on large drawings. Zone identifiers are placed every foot along the edge of the drawing. The identifiers along the bottom of the drawing are numbers and those up the side of the drawing are letters.

(AM.I.B.K1)- FAA-H-8083-30

Question 17

8130-2. Which of the following terms is/are used to indicate specific measured distances from the datum and/or other points identified by the manufacturer, to points in or on the aircraft?

1. Zone numbers.
2. Reference numbers.
3. Station numbers.

A. 1 and 3.
B. 3.
C. 2.

Answer 17

B

Station numbers is a numbering system used on large assemblies for aircraft to locate stations such as fuselage frames. Fuselage Frame-Sta 185 indicates the frame is 185 inches from the datum of the aircraft. The measurement is usually taken from the nose or zero station, but in some instances it may be taken from the fire wall or some other point chosen by the manufacturer

(. AM.I.B.K1) - FAA-H-8083-30

Question 18

8130-3. In order to locate wing and stabilizer frames, what numbering system is used?

A. Dimension numbers.
B. Station numbers.
C. Scale numbers.

Answer 18

B

Locations for fuselage frames in aircraft drawings are identified by station numbers.

(AM.I.B.K1)- FAA-H-8083-30

Question 19

8133. What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are:
      1.0625 +.0025 -.0003?

A. .0028.
B. 1.0650.
C. 1.0647.

Answer 19

A

The bushing described here has an outside dimension of 1.0625 inch with a tolerance of +0.0025 -0.0003. The bushing could have an outside diameter of anywhere between 1.0622 inch and 1.0650 inch. The tolerance for this part is 0.0028 inch.

(AM.I.B.K1)- FAA-H-8083-30

Question 20

8134. A hydraulic system schematic drawing typically indicates the

A. Specific location of the individual components within the aircraft.
B. Direction of fluid flow through the system.
C. Amount of pressure in the pressure and return lines, and in system components.

Answer 20

B

A schematic drawing of a hydraulic system would not show the specific location of any of the parts in the aircraft, nor the amount of pressure in the pressure and return lines, and in system components. A schematic drawing shows the way all of the components are connected together to form the complete system. It also shows the direction the fluid flows through the system.
(AM.I.B.K1)- FAAH-8083-30

Question 21

(1) A measurement should not be scaled from an aircraft print because the paper shrinks or stretches when the print is made.
(2) When a detail drawing is made, it is carefully and accurately drawn to scale, and is dimensioned.

Regarding the above statements,
A. Only 2 is true.
8. Both 1 and 2 are true.
C. Neither 1 nor 2 is true.

Answer 21

B

Statement1 is true.Measurements should never be scaled from an aircraft drawing because the paper shrinks and stretches. The print is seldom the exact same size as the original drawing.
Statement 2 is also true. When a detail drawing is made, it is carefully and accurately drawn to scale and is dimensioned.

(AM.I.B.K1)- FAA-H-8083-30

Question 22

8141. In the reading of aircraft blueprints, the term “tolerance,” used in association with aircraft parts or components,

A. Is the tightest permissible fit for proper construction and operation of mating parts.
B. Is the difference between extreme permissible dimensions that a part may have and still be acceptable.
C. Represents the limit of galvanic compatibility between different adjoining material types in aircraft parts.

Answer 22

B

Tolerance is the difference between the extreme permissible dimensions of a part.

(AM.I.B.K1) - FAA-H-8083-30

Question 23

8113. (Refer to Figure 31.) What are the proper procedural steps for sketching repairs and alterations?

A. 3, 1, 4, and 2.
B. 4, 2, 3, and 1.
C. 1, 3, 4, and 2.

Answer 23

A

An easy way to make a sketch of a repair or alteration is to:
3 Block in the space and basic shape to be used for the sketch;
1 Add details to the basic block;
4 Darken the lines that are to show up as visible lines in the finished sketch; and
2 Add dimensions and any other information that will make the sketch more usable.
(AM.I.B.K2) - FAA-H-8083-30

Question 24

8117. What should be the first step of the procedure in sketching an aircraft wing skin repair?

A. Draw heavy guidelines.
B. Lay out the repair.
C. Block in the views.

Answer 24

C

In making a sketch of a repair, the first thing to do is to block in the views. As you block in the views, you are able to organize the sketch so it will clearly show the most information.

(AM.I.B.K2) 1- FAA-H-8083-30

Question 25

8118 (1) According to 14 CFR Part 91, repairs to an aircraft skin should have a detailed dimensional sketch included in the permanent records. (2) On occasion, a mechanic may need to make a simple sketch of a proposed repair to an aircraft, a new design, or a modification. Regarding the above statements, A-only 1 is true. B-only 2 is true. C-both 1 and 2 are true.

Answer 25

B Statement 1 is not true. Part 91 requires that maintenance records contain "a description (or reference to data acceptable to the Administrator) of the work performed ... " There is no requirement in Part 91 that a detailed dimensional sketch of a repair become a part of the aircraft's permanent records. Statement 2 is true. A simple sketch is often needed to help a mechanic make a repair, a new design, or a modification. (AM.I.B.K2) - FAA-H-8083-30

Question 26

8122. (Refer to Figure 33.) Which material section-line symbol indicates cast iron? A. 1 B. 2 C. 3

Answer 26

C Section lines shown in 3 are for cast iron. Section lines shown in 1 are for rubber, plastic, or electrical insulation. Section lines shown in 2 are for steel. (AM.I.B.K3) - FAA-H-8083-30

Question 27

8123 (Refer to Figure 34.) What is the dimension of the chamfer? A. 1/16 X 37° B. 0.3125 + .005 - 0 C. 0.0625 X 45°

Answer 27

C The chamfer is the tapered end of the cylindrical body of this clevis. The drawing shows that the end is chamfered at an angle of 45°, and the chamfer extends back for 1/16 inch. One-sixteenth of an inch is 0.0625 inch. (AM.I.B.K3) - FAA-H-8083-30

Question 28

8124 (Refer to Figure 34.) What is the maximum diameter of the hole for the clevis pin? A. 0.3175 B. 0.3130 C. 0.31255

Answer 28

A The hole in this clevis through which the clevis pin fits has a diameterof0.3125 (+0.005, -0.000) inch. The tolerance (+0.005, -0.000) allows us to make the hole anywhere between 0.3125 and 0.3175 inch in diameter. (AM.I.B.K3) - FAA-H-8083-30

Question 29

8125 (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? A. 55/64 inch B. 1 inch C. 7/8 inch

Answer 29

B The maximum diameter of the finished clevis is 7/8 (0.875) inch. To be sure that every part of this maximum diameter is machined, we would need to use a larger bar of material to make it. 55/64 inch = 0.859375 (this is too small) 1 inch (this is the correct choice) 7/8 inch= 0.875 (this is too small) (AM.I.B.K3) - FAA-H-8083-30

Question 30

8128 (Refer to Figure 35.) Identify the extension line. A. 3 B. 1 C. 4

Answer 30

A 3 is an extension line used to show the width of the paint stripe. 1 is a visible outline. 2 is a hidden line. 4 is a center line. (AM.I.B.K3) - FAA-H-8083-30

Question 31

8129 (Refer to Figure 36.) The diameter of the holes in the finished object is A. 3/4 inch B. 31/64 inch C. 1/2 inch

Answer 31

C The two holes in this part have a finished diameter of 1/2 inch. They are made by first drilling them to a diameter of 31/64 inch and then reaming them to their final diameter of 112in ch. This information is found in note 1. (AM.I.B.K3) - FAA-H-8083-30

Question 32

8132 When reading a blueprint, a dimension is given as 4.387 inches +.005 -.002. Which statement is true? A. The maximum acceptable size is 4.390 inches. B. The minimum acceptable size is 4.385 inches. C. The minimum acceptable size is 4.382 inches.

Answer 32

B The part described here has a dimension of 4.387 inches, with a tolerance of +0.005, -0.002. The part could have a dimension of anywhere between 4.385 inches and 4.392 inches. (AM.I.B.K3) - FAA-H-8083-30

Question 33

8135 (Refer to Figure 37.) The vertical distance between the top of the plate and the bottom of the lowest 15/64 - inch hole is A. 2.250 B. 2.242 C. 2.367

Answer 33

C The distance from the top of the plate to the center of the top hole is 3/8 inch (0.375 inch). The distance between the center of the top hole and the center of the second hole is 7/8 inch (0.875 inch). The distance between the center of the second hole and the center of the third hole is 7/8 inch (0.875 inch). The distance between the center of the third hole and the center of the lowest small hole is 1/8 inch (0.125 inch). The distance from the center of the 15/64-inch hole to its bottom edge is 15/128 inch (0.117 inch). When all of these dimensions are added together, we find the distance from the top of the plate to the bottom of the lower small hole to be 2.367 inches. (AM.I.B.K3) - FAA-H-8083-30

Question 34

8142 (Refer to Figure 38.) An aircraft reciprocating engine has a 1,830 cubic-inch displacement and develops 1,250 brake-horsepower at 2,500 RPM. What is the brake mean effective pressure? A. 217 B. 205 C. 225

Answer 34

A 1. Find the 1,250-brake-horsepower vertical line at the top of the chart, and follow this line down until it intersects the diagonal line for the 1,830-cubic-inch-displacement engine. 2. Draw a horizontal line from this intersection point to the right until it intersects the diagonal line for 2,500 RPM. 3. From the intersection of the horizontal line and the RPM diagonal line, draw a line vertically downward to the BMEP scale. 4. You will find that the vertical line touches the BMEP scale just about on the 217 psi BMEP line. (AM.I.B.K3) - FAA-H-8083-30

Question 35

8143 (Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement, develops 2,000 brake-horsepower, and indicates 270 brake mean effective pressure. What is the engine speed (RPM)? A. 2,200 B. 2,100 C. 2,300

Answer 35

B 1. Find the 2,000-brake-horsepower vertical line along the top of the chart. 2. Follow this line down until it intersects the diagonal line for the 2,800-cubic-inch-displacement engine. 3. Draw a horizontal line from this intersection to the right of the chart. 4. Find the 270-BMEP vertical line at the bottom of the chart, and follow this line up until it intersects the horizontal line you just drew. 5. Find the diagonal line for the RPM that crosses the intersection of the two lines you have just drawn. 6. An R-2800 engine will need to turn at 2,100 RPM to develop 2,000 brake horsepower when it has a BMEP of 270 psi. (AM.I.B.K3) - FAA-H-8083-30

Question 36

8144 (Refer to Figure 38.) An aircraft reciprocating engine has a 2,800 cubic-inch displacement and develops 2,000 brake-horsepower at 2,200 RPM. What is the brake mean effective pressure? A. 257.5 B. 242.5 C. 275.0

Answer 36

A 1. Find the 2,000-brake-horsepower vertical line at the top of the chart and follow this line down until it intersects the diagonal line for the 2,800-cubic-inch-displacement engine. 2. Draw a horizontal line from this intersection point to the right until it intersects the diagonal line for 2,200 RPM. 3. From the intersection of the horizontal line and the RPM diagonal line, draw a line vertically downward to the BMEP scale. 4. You will find that the vertical line touches the BMEP scale just about on the 257-psi-BMEP line. (AM.I.B.K3) - FAA-H-8083-30

Question 37

8145 (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. A. No.10 B. No.11 C. No.18

Answer 37

A 1. Follow the 15-ampere diagonal line down until it intersects the horizontal line for 40 feet in the 28-volt column. 2. This intersection occurs between the vertical lines for 12-gage and 10-gage wire. 3. You would need a 10-gage wire (always use the larger of the two wires) to carry a 15-amp load for 40 feet and not have more than a 1-volt drop. (AM.I.B.K3) -AC 43.13-1B

Question 38

8146 (Refer to Figure 39.) Determine the maximum length of a No. 16 cable to be installed from a bus to the equipment in a 28-volt system with a 25-ampere intermittent load and a 1-volt drop. A. 8 feet B. 10 feet C. 12 feet

Answer 38

A 1. Draw a diagonal line for 25 amperes midway between and parallel to the 20-ampere and the 30-ampere diagonal lines. 2. Follow this line down until it intersects the 16-gage vertical line. 3. This intersection occurs just above curve 3 on the horizontal line for 8 feet of length in the 28-volt (1-volt drop) column. 4. A No. 16 cable can carry an intermittent load of 25 amperes for 8 feet without exceeding a voltage drop of 1 volt. (AM.I.B.K3) - FAA-H-8083-30

Question 39

8147 (Refer to Figure 39.) Determine the minimum wire size of a single cable in a bundle carrying a continuous current of 20 amperes 10 feet from the bus to the equipment in a 28-volt system with an allowable 1-volt drop. A. No.12 B. No.14 C. No.16

Answer 39

A 1. Follow the 20-ampere diagonal line down until it intersects curve 1. This curve limits the wire sizes that can be used in a bundle. 2. This intersection occurs between the vertical lines for 14-gage and 12-gage wires. 3. A 12-gage wire is needed to carry a continuous current of 20 amps if the wire is routed in a bundle. 4. This wire size is chosen on the basis of the heat developed, not on the voltage drop. (If voltage drop were the limiting factor, a 16-gage wire could be used.) (AM.I.B.K3) -AC 43.13-1B

Question 40

8148 (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. A. 22.5 feet B. 26.5 feet C. 12.5 feet

Answer 40

B 1. Follow the diagonal line for 20 amperes down until it intersects the 12-gage vertical line. 2. Draw a line horizontally to the left from this point of intersection. This line meets the 1-volt drop column at the 26.5-foot mark. 3. This point of intersection is above curve 1 showing that the wire can carry this load continuously without producing too much heat. 4. A 12-gage wire can carry 20 amperes continuously for 26.5 feet without overheating the wire and without producing a voltage drop of more than 1 volt. (AM.I.B.K3) -AC 43.13-1B

Question 41

8149 (Refer to Figure 40.) Determine the proper tension for a 1/8-inch cable (7 x 19) if the temperature is 80°F. A. 70 pounds B. 75 pounds C. 80 pounds

Answer 41

A 1. Follow the vertical line for a temperature of 80°F upward until it intersects the curve for 1/8-inch, 7 x 19 cable. 2. From this point of intersection, draw a line horizontally to the right until it intersects the rigging load in pounds index. This intersection is at 70 pounds. (AM.I.B.K3) - FAA-H-8083-31

Question 42

8150 (Refer to Figure 40.) Determine the proper tension for a 3/16-inch cable (7 x 19 extra flex) if the temperature is 87°F. A. 135 pounds B. 125 pounds C. 140 pounds

Answer 42

B 1. Draw a line vertically upward from a temperature of 87°F until it intersects the curve for 3/16-inch, 7 x 19 cable. 2. From this point of intersection, draw a line horizontally to the right until it intersects the rigging load in pounds index. This intersection is at 125 pounds. (AM.I.B.K3) - FAA-H-8083-31

Question 43

8151 (Refer to Figure 41.) Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM. A. 25.3 pounds B. 35.5 pounds C. 49.8 pounds

Answer 43

A 1. Follow the 2,300 RPM vertical line upward until it intersects the propeller load horsepower curve. 2. From the point of intersection project a line horizontally to the left to read the brake horsepower the engine develops at 2,300 RPM. This is 110 brake horsepower. 3. Follow the 2,300 RPM curve upward until it intersects the propeller load brake specific fuel consumption curve. 4. From the point of intersection, project a line horizontally to the right to read the specific fuel consumption for 2,300 RPM. This is 0.46 pound of fuel burned per hour for each horsepower developed. 5. The engine burns 50.6 pounds of fuel per hour when it is developing 110 brake horsepower. 6. A 30-minute reserve would require one half of this, or 25.3 pounds. (AM.I.B.K3) - FAA-H-8083-30

Question 44

8152 (Refer to Figure 41.) Determine the fuel consumption with the engine operating at cruise, 2,350 RPM. A. 49.2 pounds per hour B. 51.2 pounds per hour C. 55.3 pounds per hour

Answer 44

C 1. Follow the 2,350 RPM vertical line upward until it intersects the propeller load horsepower curve. 2. From the point of intersection project a line horizontally to the left to read the brake horsepower that the engine develops at 2,350 RPM. This is 118 brake horsepower. 3. Follow the 2,350 RPM curve upward until it intersects the propeller load brake specific fuel consumption curve. 4. From the point of intersection, project a line horizontally to the right to read the specific fuel consumption for 2,350 RPM. This is 0.47 pound of fuel burned per hour for each horsepower developed. 5. Multiply 118 by 0.47 to get 55.46, the fuel consumption in pounds per hour when the engine is developing 118 brake horsepower. (AM.I.B.K3) - FAA-H-8083-30

Question 45

8105 (1) A detail drawing is a description of a single part. (2) An assembly drawing is a description of an object made up of two or more parts. Regarding the above statements, A. only 1 is true. B. neither 1 nor 2 is true. C. both 1 and 2 are true.

Answer 45

C Statement 1 is true. A detail drawing is a description of a single part that includes enough information to allow the part to be manufactured (fabricated). Statement 2 is also true. An assembly drawing is a drawing that shows the way various detail parts are put together to form an assembly or a sub assembly. Assembly drawings refer to the various parts to be assembled by the drawing number of their detail drawings. (AM.I.B.K4) - FAA~H-8083-30

Question 46

8107 A specific measured distance from the datum or some other point identified by the manufacturer, to a point in or on the aircraft is called a A. zone number. B. reference number. C. station number.

Answer 46

C A station number is a number used to identify the number of inches from the datum or other point identified by the manufacturer to a point in or on the aircraft. (AM.I.B.K4) - FAA-H-8083-30

Question 47

8108 Which statement is true regarding an orthographic projection? A. There are always at least two views. B. lt could have as many as eight views. C. One-view, two-view,. and three-view drawings are the most common.

Answer 47

C An orthographic projection can show as many as six views of an object. One-view, two-view, and three-view drawings are the most commonly used types of orthographic projections. (AM.I.B.K4) ~ FAA-H-8083-30

Question 48

8110 A line used to show an edge which is not visible is a A. phantom line. B. hidden line. C. break line.

Answer 48

B A phantom line is a light line made up of an alternate long dash and two short dashes. A phantom line shows the location of a part that is used as a reference. A hidden line is a medium-weight dashed line that shows a surface or a part that is not visible from the view in which it appears. A break line is a wavy or a zigzag line used to show that a part has been broken off and only part of it is shown. (AM.I.B.K4) - FAA-H-8083-30

Question 49

8112 (1) Schematic diagrams indicate the location of individual components in the aircraft. (2) Schematic diagrams indicate the location of components with respect to each other within the system. Regarding the above statements, A. only 1 is true. B. both 1 and 2 are true. C. only 2 is true.

Answer 49

C Statement 1 is not true. Schematic diagrams do not indicate the location of individual components in the aircraft. Statement 2 is true. Schematic diagrams do show the location of the components with respect to each other within the system. (AM.I.B.K4) - FAA-H-8083-30

Question 50

8119 Working drawings may be divided into three classes. They are: A. title drawings, installation drawings, and assembly drawings. B. detail drawings, assembly drawings, and installation drawings. C. detail drawings, orthographic projection drawings, and pictorial drawings.

Answer 50

B The three classes of working drawings are: detail drawings, assembly drawings, and installation drawings. (AM.I.B.K4) - FAA-H-8083-30

Question 51

8119-1 What is the class of working drawing that is the description/depiction of a single part? A. Installation drawing. B. Assembly drawing. C. Detail drawing.

Answer 51

C A detail drawing is a description of a single part, given in such a manner as to describe by lines, notes, and symbols the specifications as to size, shape, material, and method of manufacture that are to be used in making the part. (AM.I.B.K4) - FAA-H-8083-30

Question 52

8126 (Refer to Figure 34.) Using the information, what size drill would be required to drill the clevis bolthole? A. 5/16 inch. B. 21/64 inch. C. 1/2 inch

Answer 52

A The drawing shows that the hole for the clevis bolt should have a diameter of 0.3125 (+.005, -0.000). This hole could be drilled with a 5/16 drill. The decimal equivalent of 5/16 inch is 0.3125. (AM.I.B.K4) - FAA-H-8083-30

Question 53

8127 The measurements showing the ideal or "perfect" sizes of parts on drawings are called A. allowances. B. dimensions. C. tolerances.

Answer 53

B Allowances are the difference between the nominal dimension of a part and its upper or lower limit. Dimensions are the measurements used to describe the size of an object. It is the ideal or "perfect" size of the part. Tolerances are the differences between the extreme allowable dimensions of a part. (AM.I.B.K4) - FAA-H-8083-30

Question 54

8131 One purpose for schematic diagrams is to show the A. functional location of components within a system. B. physical location of components within a system. C. size and shape of components within a system.

Answer 54

A Schematic diagrams are used to show the functional location of components within the system by showing all of the components laid out in the way that they relate to each other in the functioning of the system. Schematic diagrams do not show the physical location of the components within a system, nor do they show the size and shape of the components. (AM.I.B.K4) - FAA-H-8083-30

Question 55

8137 The drawings often used in illustrated parts manuals are A. exploded-view drawings. B. block drawings. C. detail drawings.

Answer 55

A The drawings used in illustrated parts manuals are exploded-view drawings. (AM.I.B.K4)- FAA-H-8083-30

Question 56

8138 A drawing in which the sub assemblies or parts are shown as brought together on the aircraft is called A. an assembly drawing. B. a detail drawing. C. an installation drawing.

Answer 56

C An installation drawing is one in which all of the parts and sub assemblies are brought together. (AM.I.B.K4) - FAA-H-8083-30

Question 57

8139 What type of diagram shows the wire size required for a particular installation? A. A block diagram. B. A schematic diagram. C. A wiring diagram.

Answer 57

C An electrical wiring diagram shows the wire size required for a particular installation. (AM.I.B.K4)- FAA-H-8083-30

Question 58

8139-1 In what type of electrical diagram are images of components used instead of conventional electrical symbols? A. A pictorial diagram. B. A schematic diagram. C. A block diagram.

Answer 58

A A pictorial diagram is similar to a photograph. It shows an object as it appears to the eye, but is not satisfactory for showing complex forms and shapes. (AM.I.B.K4) - FAA-H-8083-30

Question 59

8140 Schematic diagrams are best suited for which of the following? A. Showing the visual details of individual components in a system. B. Showing the overall location and appearance of components in a system. C. Troubleshooting system malfunctions.

Answer 59

C A schematic diagram shows the relative location of all of the parts in a system, but does not give the location of the parts in the aircraft. Schematic drawings are of great help when troubleshooting a system. ( AM.I.B.K4)- FAAH - 8083-30