WorksheetsAviation Progressive 1 & 2
Total questions: 93
Worksheet time: 47mins
What type of line is normally used in drawing or blueprint that indicates invisible edges or contours?
medium-weight short dashes, evenly spaced
medium-weight very short dashes, evenly spaced
thin-weight, one long and two short dashes, evenly spaced
Refer to figure 27. In the isometric view of a typical aileron balance weight, identify the view indicated by the arrow.
1
3
2
(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,
both 1 and 2 are true
neither 1 nor 2 is true
only 1 is true
Identify the bottom view of the object shown. (refer to figure 28)
2
3
1
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
station number
zone number
reference number
Which statement is true regarding an orthographic projection?
One-view, two view, and three-view drawings are the most common
It could always have as many as eight views
There are always at least two views
Identify the left side view of the object shown. (refer to figure 29)
3
1
2
A line used to show an edge which is not visible is a
hidden line
phantom line
break line
What type of drawing line consists of alternating long and short lines?
center
dimension
hidden
Identify the bottom view of the object. (refer to figure 30)
1
2
3
(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,
only 2 is true
only 1 is true
both 1 and 2 are true
What are the proper procedural steps for sketching repairs and alterations? (refer to figure 31)
3,1,4, and 2
4,2,3, and 1
1,3,4, and 2
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.
What is the next step required for a working sketch of the illustration? (refer to figure 32)
sketch extension and dimension lines
darken the object outlines
add notes, dimensions, title, and date
For sketching purposes, almost all objects are composed of one or some combination of six basic shapes; these include the
triangle, circle, cube, cylinder, cone, and sphere
angle, arc, line, plane, square, and circle
triangle, plane, circle, line, square, and sphere
In a sectional view drawing, what sections illustrate particular parts of an object?
removed
revolved
half
What should be the first step of the procedure in sketching an aircraft wing skin repair?
block in the views
draw heavy guidelines
lay out the repair
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 non-parallel chord lines across the circle and then a corresponding perpendicular bisector lines across each chord line.
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.
(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,
only 2 is true
only 1 is true
both 1 and 2 are true
Working drawings may be divided into three classes. They are:
detail drawings, assembly drawings, and installation drawings
title drawings, installation drawings, and assembly drawings
detail drawings, orthographic drawings, and pictorial drawings
What is the class of working drawing that is the description/depiction of a single part?
detail drawing
assembly drawing
installation drawing
Sketches are usually made easier by the use of
graph paper
plain white paper
artist's paper
(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,
neither 1 nor 2 is true
only 1 is true
only 2 is true
What material symbol is frequently used in drawings to represent all metals?
cast iron
steel
aluminum
What is used to indicate that a surface must be machine finished?
finished marks
text
leader lines
Which material section-line symbol indicates cast iron? (refer to figure 33)
3
1
2
What is the dimension of the chamfer? (refer to figure 34)
0.0625 x 45 degrees
1/16 x 37 degrees
0.3125 + 0.005 - 0
What is the maximum diameter of the hole for the clevis pin? (refer to figure 34)
0.3175
0.3130
0.31255
What would the minimum diameter of 4130 round stock required for the construction of the clevis that would produce a machined surface? (refer to figure 34)
1 inch
55/64 inch
7/8 inch
Identify the extension line. (refer to figure 35)
1
3
4
The measurements showing the ideal or "perfect" sizes of parts on drawings are called
dimensions
allowances
tolerances
The diameter of the holes in the finished object is (ream)
1/2 inch
3/4 inch
31/64 inch
Zone numbers on aircraft blueprints are used to
locate parts, sections, and views on large drawings
indicate different sections of the aircraft
locate parts in the aircraft
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
3
2
1 and 3
In order to locate wing and stabilizer frames, what numbering system is used?
station numbers
dimension numbers
scale numbers
One purpose for schematic diagrams is to show the
functional location of components within a system
physical location of components within a system
size and shape of components within a system
When reading a blueprint, a dimension is given as 4.387 inches +.005 -.002. Which statement is true?
The minimum acceptable size is 4.385 inches.
The maximum acceptable size is 4.390 inches.
The minimum acceptable size is 4.382 inches.
What is the allowable manufacturing tolerance for a bushing where the outside dimensions shown on the blueprint are: 1.0625 + .0025 - .0003?
0.0028
1.0650
1.0647
A hydraulic system schematic drawing typically indicates the
direction of fluid flow through the system
specific location of the individual components within the aircraft
amount of pressure in the pressure and return lines, and in system components
The vertical distance between the top of the plate and the bottom of the lowest 15/64-inch hole is
2.250
2.242
2.367
(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,
both 1 and 2 are true
neither 1 nor 2 is true
only 2 is true
The drawings often used in illustrated parts manuals are
exploded view drawings
block drawings
detail drawings
A drawing in which the subassemblies or parts are shown as brought together on an aircraft is called
an installation drawing
an assembly drawing
a detail drawing
What type of diagram shows the wire size required for a particular installation?
a wiring diagram
a schematic diagram
a block diagram
In what type of electrical diagram are images of components used instead of conventional electrical symbols?
a pictoral diagram
a schematic diagram
a block diagram
Schematic diagrams are best suited for which of the following?
troubleshooting system malfunctions
showing the visual details of individual components in a system
showing the overall location and appearance of components in a system
In the reading of aircraft blue prints, 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.
is the tightest permissable fit for proper construction and operation of mating parts.
represents the limit of galvanic compatibility between different adjoining material types in aircraft parts.
An aircraft reciprocating engine has 1,830 cubic inch displacement and develops 1,250 brake-horsepower at 2,500 RPM. What is the brake mean by effective pressure? (refer to figure 38)
217
205
225
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)? (refer to figure 38)
2,100
2,200
2,300
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? (refer to figure 38)
257.5
242.5
275.0
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. (refer to figure 39)
No. 10
No. 11
No. 18
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 (refer to figure 39)
8 feet
10 feet
12 feet
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. (refer to figure 39)
No. 12
No. 14
No. 16
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. (refer to figure 39)
26.5 feet
22.5 feet
12.5 feet
Determine the proper tension for a 1/8-inch cable (7 x 19) if the temperature is 80 degrees F. ( refer to figure 40)
70 pounds
75 pounds
80 pounds
Determine the proper tension for a 3/16-inch cable (7 x 19 extra flex) if the temperature is 87 degrees F. (refer to figure 40)
125 pounds
135 pounds
140 pounds
Determine how much fuel would be required for a 30-minute reserve operating at 2,300 RPM. (refer to figure 41)
25.3 pounds
35.5 pounds
49.8 pounds
Determine the fuel consumption with the engine operating at cruise, 2,350 RPM. (refer to figure 41)
55.3 pounds per hour
51.2 pounds per hour
49.2 pounds per hour
Using the information, what size drill would be required to drill the clevis bolthole? (refer to figure 34)
5/16 inch
21/64 inch
1/2 inch
Which coupling nut should be selected for use with 1/2 inch aluminum oil lines which are to be assembled using flared tube ends and standard AN nuts, sleeves, and fittings?
AN - 818 - 8
AN - 818 - 5
AN - 818 - 16
Metal tubing fluid lines are sized by wall thickness and
outside diameter in 1/16 inch increments
inside diameter in 1/16 inch increments
outside diameter in 1/32 inch increments
Rolling-type flairing tools are used to flare X, X, and X tubing.
soft copper, aluminum, brass
titanium, soft copper, corrosion resistant steel
stainless steel, hard copper, mild steel
From the following sequences of steps, indicate the proper order you would use to make a single flare on a piece of tubing: 1. Place the tube in the proper size hole in the flaring block. 2. Project the end of the tube slightly from the top of the flaring tool, about the thickness of a dime. 3. Slip the fitting nut and sleeve on the tube. 4. Strike the plunger several light blows with a lightweight hammer or mallet and turn the plunger one-half turn after each blow. 5. Tighten the clamp bar securely to prevent slippage. 6. Center the plunger or flaring pin over the tube.
3, 1, 6, 2, 5, and 4.
1, 3, 5, 2, 4, and 6
3, 1, 2, 6, 5, and 4
Hydraulic tubing, which is damaged in a localized area to such an extent that repair is necessary, may be repaired
by cutting out the damaged area and utilizing a swaged tube fitting to join the tube ends.
only by replacing the tubing section run (connection to connection) using the same size and material as the original.
by cutting out the damaged section and soldiering in a replacement section of tubing.
What is an advantage of a double flare on aluminum tubing?
More resistant to damage when the joint is tightened.
Ease of construction.
Can be applied to ay size and wall-thickness of tubing.
A certain amount of slack must be left in a flexible hose during installation because, when under pressure, it
contracts in length and expands in diameter.
expands in length and diameter.
expands in length and contracts in diameter.
The term "cold flow" is generally associated with
flexibility characteristics of various hose materials at low ambient temperature.
impressions left in natural or synthetic rubber hose material.
the effects of low temperature gasses or liquids flowing in hose or tubing.
What is the color of an AN steel flared-tube fitting?
blue
red
black
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
1 and 3
1, 2, and 3
Flexible lines must be installed with
a slack of 5 to 8 percent of the length.
a slack of at least 10 to 12 percent of the length.
enough slack to allow maximum flexing during operation.
The maximum distance between end fittings to which a straight hose assembly is to be connected is 50 inches. The minimum hose length to make such a connection should be
52 - 1/2 inches
54 - 1/2 inches
51 - 1/2 inches
Excessive stress on fluid or pneumatic metal tubing caused by expansion and contraction due to temperature changes can best be avoided by
providing bends in the tubing
using short, straight sections of tubing between fixed parts of the aircraft
using tubing of the same material as the majority of the adjoining structure
The material specifications for a certain aircraft require that a replacement oil line be fabricated from 3/4 - inch 0.072 5052 - 0 aluminum alloy tubing. What is the inside dimension of this tubing?
0.606 inch
0.686 inch
0.750 inch
In most aircraft hydraulic systems, two-piece connectors consisting of a sleeve and a nut are used when a tubing flare is required. The use of this type connector eliminates
the possibility of reducing the flare thickness by wiping or ironing during the tightening process.
the flaring operation prior to assembly
wrench damage to the tubing during the tightening process
During installation, MS flareless fittings
are normally tightened by turning the nut a specified amount , unless the manufacturer lists torque values.
should be assembled by applying an anti-seize compound to both surfaces of the fitting and flare.
are normally tightened by applying torque in small increments to prevent over-heating the tube mating surfaces.
When flaring aluminum tubing for use with AN fittings, the flare angle must be
37 degrees
39 degrees
45 degrees
Scratches or nicks on the straight portion of aluminum alloy tubing may be repaired if they are no deeper than
10 percent of the wall thickness
20 percent of the wall thickness
1/32 inch or 20 percent of wall thickness, whichever is less
Flexible hose used in aircraft systems is classified in size according to the
inside diameter
outside diameter
wall thickness
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.
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.
A scratch or nick in aluminum tubing can be repaired provided it does not
appear in the heel of bend
appear on the inside of a bend
exceed 10 percent of the tube OD on a straight section
Which of the following hose materials are compatible with phosphate -eater base hydraulic fluids?
Butyl and Teflon
Neoprene and Teflon
Teflon and Buna - N
Which tubings have the characteristics (high strength, abrasion resistance) necessary for use in a high-pressure (3,000 PSI) hydraulic system for operation of landing gear and flaps?
corrosion - resistant steel annealed or 1/4H
2024 - T or 5052 - 0 aluminum alloy
1100 - 1/2H or 3003 - 1/2H aluminum alloy
When installing bonded clamps to support metal tubing,
remove paint or anodizing from tube at clamp location.
paint clamp and tube after clamp installation to prevent corrosion
paint removal from tube is not recommended as it will inhibit corrosion
In a metal tubing installation,
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
rigid straight line runs are preferable
Which of the following tools is best to use when cutting soft aluminum tubing?
Hand operated wheel-type tubing cutter.
Anglegrinder with cut-off wheel.
Circular-saw equipped with an abrasive cutting wheel.
The primary purpose of providing suitable bends in fluid and pneumatic metal tubing runs is to
prevent excessive stress on the tubing.
provide for access within aircraft structures.
clear obstacles and make turns in aircraft structures.
Which of the following statements is true regarding minimum allowable bend radii for 1.5 inches OD or less aluminum alloy and steel tubing of the same size?
The minimum radius for steel is greater than for aluminum.
The minimum radius for steel is less than for aluminum.
The minimum radius is the same for both steel and aluminum.
A gas or fluid line marked with the letters PHDAN is
used to carry a hazardous substance.
a duel purpose pneumatic and/or hydraulic line for normal and emergency system use.
a pneumatic or hydraulic system drain or discharge line.
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 always black against white background regardless of line content.
Symbols are composed of various single colors according to line content.
Symbols are composed of one to three contrasting colors according to line content.
If a flared tube coupling nut is overtightened, where is the tube most likely to be weakened/damaged?
At the sleeve, fitting nut, or tube flare.
Along the entire length of the sleeve and tube interface.
At the edge of the sleeve and straight portion of the tube.
(1) Bonded clamps are used for support when installing metal tubing.(2) Unbonded clamps are used for support when installing wiring.Regarding the above statements,
both 1 and 2 are true
only 1 is true
neither 1 nor 2 is true
Which statement is true regarding flattening of tubing in bends?
The small diameter of the flattened portion must not be less than 75 percent of the original outside diameter.
The small diameter of the flattened portion must not be less than 65 percent of the original outside diameter.
The small diameter portion in the bend cannot exceed more than 75 percent of the diameter of straight tubing.
A 3/6 inch aircraft high pressure flexible hose as compared to 3/8 inch metal tubing used in the same system will
have equivalent flow characteristics.
have higher flow capabilities.
usually have interchangeable applications
