Aircraft Drawings Flashcards
How may you bring out important details of a part in aircraft drawings?
A detail view drawn to a larger scale
Describe information found in the title block of blue print
Drawing size, part or assembly name, scale, date, draftsman, film, checker and approving official
Describe the bill of materials
A list of parts and materials necessary to fabricate or assemble a component or system
What is the difference between an allowance and a tolerance used on aircraft blueprints?
Allowance - the difference between the nominal dimension and the maximum and minimum permissible sizes
Tolerance - the sum of the minimum and maximum allowance figures
Define clearance as used on aircraft blueprints
Clearance is a dimension allowable between parts
What is an orthographic projection?
It is a way of drawing an object using different views, such as top, front and side views
What might one view drawings represent in aircraft blueprints?
Objects of uniform thickness, such as gaskets, shims and plates
One, two and three view drawings are commonly used for
Showing a shape of an object
What type of diagram would a mechanic use for troubleshooting?
Schematic diagrams
How are dimension lines shown on aircraft drawings?
Solid lines broken at the midpoint for the insertion of measurements
Where is the revision block normally located?
Adjacent to the title block or at top RH corner
How are aircraft drawing changes identified?
Changes are usually listed as revisions
How can you determine if a drawing has been changed?
A record of the changes is listed either in a revision block or in ruled columns which may be in a corner of the drawing or next to the title block
Describe a center line
Alternating long and short dashes
Describe a phantom line
Alternating one long and two short dashes
