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Module 7: Maintenance Practices (B1) > 7.5: Engineering Drawings, Diagrams and Standards > Flashcards

7.5: Engineering Drawings, Diagrams and Standards Flashcards

1
Q
A

Solution treated and precipitated

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2
Q
A

Must be accompanied by the new issue number and date

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3
Q

P.C.D is an abbreviation for:

(a) Pitch Circle Diameter
(b) Pitch Cord Diameter
(c) Precision Circle Dimension

A

(a) Pitch Circle Diameter

'’The diameter of a circle which is dictated by the pitch of a number of rivets of a given size. This is used to determine the diameter of circular repairs’’

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4
Q
A

squared shaft

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5
Q

What does this mean?

A
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6
Q

What does this mean?

A
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7
Q

What does this mean?

A
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8
Q

What does this mean?

A
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9
Q

What does this mean?

A
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10
Q

What does this mean?

A
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11
Q

What does this mean?

A
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12
Q

What does this symbol mean?

A
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13
Q

What does this symbol mean?

A
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14
Q

Drawing numbers are

(a) The same as serial numbers
(b) Changed after each drawing amended after May 28, 1999.
(c) Unique to each drawing

A

(c) Unique to each drawing

'’Drawing number could be part number and is unique - only one drawing number’’

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15
Q

What is the application of each of these lines?

A
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16
Q
A

drawn to a quarter real size

'’Scale 2:1 = twice the size

1:2, scale is 1/2 size of actual’’

Scale Drawing:Actual

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17
Q
A

Concentricity

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18
Q

What do the following symbols mean?

A
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19
Q
A

General Arrangement

Drawings of the ‘general arrangement’ of the aircraft and of the main assemblies and systems are provided. These drawings usually contain overall profile particulars only, with locations and references of the associated main assembly and installation drawings; they may also provide a guide to the identification of drawing groups used by the particular design organisation

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20
Q
A

Concentricity

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21
Q
A

45^

'’Where the sectioning has taken place, the cut or broken surface is highlighted by thin parallel lines (hatching) which are normally drawn at an angle of 45^ to the axis of the part. In all views that show the sectioning of the same part, the hatched lines will be the same, both in direction and spacing.’’

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22
Q
A

angularity

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23
Q

What are the following types of ‘orthographic projections’?

A
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24
Q
A

0.7 mm

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25
Q

Fill in the missing dimensions

A
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26
Q
A

the drawing is ten times full size

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27
Q
A

where it would be inconvenient (because of limited space) to draw long lengths of the same section

Interrupted views:

To save space, only for those portions of a large or long object which are sufficient to define it need to be shown, drawn close to each other.

The break line conventions are illustrated here

It should be noted that the break lines for large components and sheet material in continue for a short distance beyond the outline.

The break lines used in may also be used on sectional views

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28
Q
A

Flatness

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29
Q
A

position

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30
Q
A

the minimum number of dimensions necessary to enable the component to be manufactured

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31
Q
A

An internal thread

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32
Q

How can you tell the difference between an external and internal screw thread on by circular convention symbol?

A
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33
Q
A

three or four, two-dimensional views of an object

'’Since no single view of an engineering part will show the details of every important feature, a complete engineering drawing necessarily appears as two, three, or more individual drawings, each one showing how the part looks when viewed from a different angle. This is made possible by using one of two methods of ‘orthographic’ projection known respectively as first angle and third angle projection’’

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34
Q

An oblique projection

(a) is the same as an isometric projection
(b) has one view looking directly at one face with the lines representing depth drawn at 90^
(c) has one view looking directly at one face with the lines representing depth drawn at a constant angle

A

(c) has one view looking directly at one face with the lines representing depth drawn at a constant angle

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35
Q
A

an installation drawing

'’The installation drawings show how and where the components and assemblies produced by the other drawings are fitted to the aircraft. They contain specific location, alignment and attachment information together with details of any materials or processes which must be used’’

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36
Q

What is a Detail drawing?

A

Detail Drawing (sometimes known as single part drawing)

This is the type of drawing prepared for each individual item required to be made. It contains all the necessary information needed for its manufacture

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37
Q

What is a collective drawing?

A

Collective drawing

This is a detail drawing used to illustrate a range of similar parts or assemblies which differ in one or more details (usually dimensional). A list detailing these differences must be included.

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38
Q

What is an Assembly or construction drawing?

A

Assembly or construction drawing:

This type of drawing indicates how the individual parts of an assembly are put together. Each part is identified by a number and all the information about the items is usually listed on a parts list which is either included on the actual drawing or separately on another sheet’’

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39
Q

What is a combined drawing?

A

Combined drawing

A combined drawing shows on one sheet of paper each individual part drawn separately, together with an assembly and/or installation drawing and a parts list.

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40
Q
A

Not to scale

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41
Q
A

direction of fluid flow through the system

Schematic diagrams

Schematic diagrams can be found in maintenance manuals to represent and give information on aircraft systems such as electrical, hydraulic, pneumatic, lubrication, air-conditioning, and pressurisation, and to provide details for engine and (where applicable) propeller operation.

Coloured diagrams are not used in maintenance manuals, but a system of hatching and shading is normally used to indicate how the system functions.

A typical schematic diagram, is used to give an overview of the complete aircraft system so that maintenance and diagnosis can be initiated.

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42
Q
A

One-view, two-view, and three-view drawings are the most common

Note: eight view is impossible as max viewable sides is 6

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43
Q
A

hidden line

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44
Q

What is a break line?

A

Interrupted views

To save space, only those portions of a large or long object which are sufficient to define it need to be shown, drawn close to each other.

The break line conventios are illustrated here.

It should be noted that the break lines for large components and sheet material in continue for a short distance beyond the outline

The break lines used in may also be used on sectional views

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45
Q
A

functional location of components within a system

Schematic diagrams

Schematic diagrams can be found in maintenance manuals to represent and give information on aircraft systems such as electrical, hydraulic, pneumatic, lubrication, air-conditioning, and pressurisation, and to provide details for engine and (where applicable) propeller operation.

A typical schematic diagram, is used to give an overview of the complete aircraft system so that maintenance and diagnosis can be initiated.

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46
Q
A

round bar

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47
Q
A

Medium-weight dashed line

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48
Q
A

Station number

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

Note: Zone number is major aircraft zones such as 500 for left wing, 600 right wing, 700 landing gear and landing gear doors and 800 for doors

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49
Q
A

below the front elevation

Note: The plan view is basically a view from the top or top view

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50
Q

When a cutting plane on a drawing cuts a web longitudinally, the web is:

(a) sectioned the same as the rest of the view
(b) not sectioned
(c) sectioned with different direction of hatch

A

(b) not sectioned

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51
Q

When a cutting plane goes through a bush and bolt assembly, on the sectioned view:

(a) both the bush and the bolt will be hatched
(b) the bush will be hatched but the bolt will not

( c) neither the bush nor the bolt will be hatched

A

the bush will be hatched but the bolt will not

'’To avoid confusion, where two or more adjacent parts are sectioned, the hatching will be drawn in different directions or to a different spacing. Common parts such as bolts, nuts, rivets, pins and similar items are not sectioned or hatched but shown in outline only’’

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52
Q
A

Machining is required on a particular surface

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53
Q

Identify the following symbols

A
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54
Q
A

A broken line as shown in 2

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55
Q
A

issue number

'’Change to a design drawing, except for minor clerical corrections, is usually accompanied by a new issue number and date’’

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56
Q
A

Convention C

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57
Q
A

BS8888

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58
Q
A

Four signatures for Stressed by, Checked by, Approved by Drawn by

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59
Q
A

False

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60
Q
A

Never

-Have to get on to engineering - CAMO -Manufacturer

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61
Q
A

A single sided, three dimensional view of the object

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62
Q
A

A two dimensional view of a single side of an object

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63
Q
A

The depth of the object viewed at 45 or 60 degrees

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64
Q
A

The object

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65
Q
A

Only the affected area of a larger object to save space on the drawing

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66
Q
A

A center line

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67
Q
A

The IPC

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68
Q
A

False

Drawings of the ‘general arrangement’ of the aircraft and of the main assemblies and systems are provided. These drawings usually contain overall profile particulars only, with locations and references of the associated main assembly and installation drawings; they may also provide a guide to the identification of drawing groups used by the particular design organisation.

Note: An installation drawing shows where to fit an assembly on an aircraft

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69
Q
A

Shown only once

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70
Q
A

The range between the upper and lower limit of the objects finished dimension

Note: If dimension is 2 +- 0.001’’

The tolerance is 0.002’’

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71
Q
A

True

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72
Q
A

To enable interchangeability

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73
Q

What is the most common form of orthographic projection in Europe?

A

Common form of orthographic projection in Europe is 1st angle

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74
Q

What happens if a change is made to a technical drawing?

A

Change made to a technical drawing. Gets a new issue number and date

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75
Q

Where does 1st angle projection display its view compared to the viewer?

A

1st angle projection displays its view at the far side compared to the viewer

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76
Q

What do orthographic projections provide?

A

Orthographic projections provide a two-dimensional view of a side of the object

77
Q

What does the following symbol mean?

A

This symbol found on an engineering drawing means angularity

78
Q

What do Oblique pictorial projections show?

A

Oblique pictorial projection shows one face in true elevation and line of depth normally drawn at 30^ or 45^ or 60^ to the horizontal

79
Q

British standard is______?

A

British standard is BS 8888

80
Q

What does this symbol represent?

A

Squared shaft

81
Q

What does this symbol represent?

A

internal thread

82
Q

What does S.W.G stand for?

A

S.W.G means Standard Wire Gauge

83
Q

What does this symbol mean?

A

Concentricity

84
Q

What does this symbol mean?

A

First angle projection

85
Q

What does this symbol mean?

A

Position

86
Q

What does this symbol mean?

A

flatness

87
Q

What does this symbol mean?

A

Solution heat treated and precipitated

88
Q
A

Option B: each view represents the side of the object nearest to it in the adjacent view

89
Q
A

Option A: drawn to a quarter

90
Q
A

Option C: three, two-dimensional views of an object

91
Q
A

Option B: Upgrade it to ‘primary’.

92
Q
A

Option B: Green

93
Q
A

Option A: Highly stressed parts but if damaged will not cause failure of the aircraft

94
Q
A

Option B: British Association

95
Q
A

Option C: BS 308

96
Q
A

Option C: the drawing is ten times full size

97
Q
A

Option B: must be accompanied by the new issue number and date

98
Q
A

Option C: has one view looking directly at one face with the lines representing depth drawn at a constant angle

99
Q
A

Option C: Not To Scale

100
Q
A

Option C: direction of fluid flow through the system

101
Q
A

Option C: One-view, two-view, and three-view drawings are the most common

102
Q
A

Option B: Medium-weight dashed line

103
Q
A

Option B: station number

104
Q
A

Option C: below the front elevation

105
Q
A

Option A: been anodic flaw detected

106
Q
A

Option B: Tip of horizontal stabilizer

Zone 3xx is the empennage

107
Q
A

Option A: issue number

108
Q

Identify ATA 100 chapters

A
109
Q

What are the following aircraft zones?

100, 200, 300, 400, 500, 600, 700, 800

A
110
Q

What does the following symbol mean?

(a) Solution treated and not requiring precipitation
(b) Solution treated and requiring precipitation

(.c) Precipitation treatment

A

(a) Solution treated and not requiring precipitation

111
Q

What does the following symbol mean?

(a) Solution treated and not requiring precipitation
(b) Solution treated and requiring precipitation

(.c) Precipitation treatment

A

(b) Solution treated and requiring precipitation

112
Q

What does the following symbol mean?

(a) Solution treated and not requiring precipitation
(b) Solution treated and requiring precipitation

(.c) Precipitation treatment

A

(.c) Precipitation treatment

113
Q

What does the following mean?

(a) Solution treated and precipitated
(b) Annealed

(.c) Hardened and tempered

A

(a) Solution treated and precipitated

114
Q

What does the following mean?

(a) Solution treated and precipitated
(b) Annealed

(.c) Hardened and tempered

A

(b) Annealed

115
Q

What does the following mean?

(a) Solution treated and precipitated
(b) Annealed

(.c) Hardened and tempered

A

(.c) Hardened and tempered

116
Q

What does the following symbol mean?

(a) Mechanical test
(b) Dye penetrant check

(.c) Ultra-sonic test

(d) Anodic flaw detected

A

(b) Dye penetrant check

117
Q

What does the following symbol mean?

(a) Mechanical test
(b) Dye penetrant check

(.c) Ultra-sonic test

(d) Anodic flaw detected

A

(a) Mechanical test

118
Q

What does the following symbol mean?

(a) Mechanical test
(b) Dye penetrant check

(.c) Ultra-sonic test

(d) Anodic flaw detected

A

(.c) Ultra-sonic test

119
Q

What does the following symbol mean?

(a) Mechanical test
(b) Dye penetrant check

(.c) Ultra-sonic test

(d) Anodic flaw detected

A

(d) Anodic flaw detected

120
Q

The number of circuits which can be completed through the poles of a switch is identified by the term: -

(a) toggle
(b) throw

© position

A

(b) throw

121
Q

Where is the title block located in Engineering Drawings?

(a) In the upper right hand corner
(b) Always in the lower right hand corner

© Sometimes in the lower right hand corner

A

(b) Always in the lower right hand corner

122
Q

How many sets of numbers are there in the ATA 100 Series coding system?

(a) Three
(b) Two

© Six

A

(a) Three

123
Q

What does the following symbol mean?

(a) Cleaned (pipes)
(b) Repaired and reconditioned

© Normalised steel parts

A

(a) Cleaned (pipes)

124
Q

What does the following symbol mean?

(a) Cleaned (pipes)
(b) Repaired and reconditioned

© Normalised steel parts

A

(b) Repaired and reconditioned

125
Q

What does the following symbol mean?

(a) Cleaned (pipes)
(b) Repaired and reconditioned

© Normalised steel parts

A

© Normalised steel parts

126
Q

What does the following symbol mean?

(a) Proof loaded
(b) Stress relieved

© Pressure test

A

(a) Proof loaded

127
Q

What does the following symbol mean?

(a) Proof loaded
(b) Stress relieved

© Pressure test

A

(b) Stress relieved

128
Q

What does the following symbol mean?

(a) Proof loaded
(b) Stress relieved

© Pressure test

A

(C) Pressure test

129
Q

What does the following symbol mean?

(a) X-ray flaw detected
(b) Salvaged

(C) Electro-magnetic flaw detection

A

(a) X-ray flaw detected

130
Q

What does the following symbol mean?

(a) X-ray flaw detected
(b) Salvaged

(C) Electro-magnetic flaw detection

A

(b) salvaged

131
Q

What does the following symbol mean?

(a) X-ray flaw detected
(b) Salvaged

(C) Electro-magnetic flaw detection

A

(C) Electro-magnetic flaw detection

132
Q

What does the following symbol mean?

(a) Electro-magnetic flaw detection
(b) Welding

(C) Etch inspection of steel

A

(b) Welding

133
Q

What does the following symbol mean?

(a) Electro-magnetic flaw detection
(b) Welding

(C) Etch inspection of steel

A

(C) Etch inspection of steel

134
Q
A

Specifications

135
Q
A

It is a record of changes which have already been made to the drawing

136
Q
A

triangle, cyclinder, cube, sphere, cone, and circle

137
Q
A

potentiometer

138
Q
A

a blind tapped hole

139
Q
A

issue number is changed

140
Q
A

PNP transistor

141
Q
A

internal

142
Q
A

is provided by an approved organisation

143
Q
A

vertical measurements on the fuselage

144
Q
A

push-pull circuit breaker

145
Q
A

iron core inductor

146
Q
A

c) three dimensional, single image of the object

147
Q
A

c) third Angle

148
Q
A

c) Across Flats

149
Q
A

c) the International standardization of maintenance manuals, illustrated parts catalogues, overhaul and repair manuals, service bulletins and letters

ATA 100 specification should give question away - international standrad

Not sure what ‘’iSpec 2200’’ means but irrevelant

150
Q
A

b) a permitted variation on a dimension to allow for inaccuracy of equipment

151
Q
A

c) the same size as the hole

152
Q

Also what is deviation? (as mentioned in this q)

A

a) tolerance

Deviation is the actual difference between the nominal size and the actual physical part

Example, A shaft is made to 1’’ +- 0.005’’ , the tolerance is 10’’ bilateral.

After manufacture, the shaft is 1.003’’, the deviation 0.003’’

153
Q
A

c) difference between shaft and hole diameters

154
Q
A

a) by a plus and minus sign preceding the permitted tolerance

155
Q
A

b) the minimum acceptable size is 4.385 inches

156
Q
A

a) 1.228’’

Note: MMC = Max material size

157
Q
A

b) 0.002 mm

158
Q
A

b) datum

159
Q
A

b) vertical measurements on the fuselage

Plane submerged in water, water line where water is on fuselage and then measurements taken above and/or below

160
Q
A

b) a rectangle

161
Q
A

b) far side from the viewer

162
Q
A

c) outside the parts outline

163
Q
A

b) Unilateral

164
Q
A

c) the hole basis

165
Q
A

c) are approved on all sorts of aircraft including commercial

166
Q
A

b) can have multiple approved specifications

167
Q
A

c) three dimensional, single image of the object

168
Q
A

b) two dimensional view of a single side of the object

169
Q
A

(a) Chapter 20

170
Q
A

(b) Chapter 28

171
Q
A

(C) Chapter 29

172
Q
A

(C) Chapter 05

173
Q
A

(b) Chapter 12

174
Q
A

(b) Chapter 20

175
Q
A

(b) six digits split into 3 parts separated by dashes

176
Q
A

(a) National Aerospace Standard

177
Q
A

(b) Society of Automotive Engineers

178
Q
A

(a) Four times the actual size

179
Q
A

(a) In the upper right hand corner, or adjacent to the title block

180
Q
A

c) Front, top, bottom, right side and left side and rear side

181
Q
A

(a) Installation Drawing

182
Q
A

c) Block Diagram

183
Q
A

(a) Block diagrams and schematics

184
Q
A

(b) AN, NAS, BS, MS

185
Q
A

(a) First Angle

Question should be more clarified - EU first angle / USA third angle

186
Q
A

(b) A dashed medium weight line with dashes all of equal length

187
Q
A

c) Thin line with alternate long and s

188
Q
A

Module 7: Maintenance Practices (B1) (20 decks)

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