Aircraft Drawings

Question 1

How many views can there be on an orthographic projection?

Answer 1

Six

Question 2

How many views are used to show most objects in an aircraft drawing?

Answer 2

Three

Question 3

What information is given in the title block of an aircraft drawing?

Answer 3

The name and address of the company who made the part, the name of the part, the scale of the drawing, the name of the draftsman, the name of the engineer approving the part, and the number of the part (the drawing number).

Question 4

Where is the title block normally located on an aircraft drawing?

Answer 4

In the lower right-hand corner of the drawing.

Question 5

How can you know that the aircraft drawing you are using is the most current version of the drawing?

Answer 5

By the number in the revision block, and by the log of the most recent drawings.

Question 6

What is a detail drawing?

Answer 6

A drawing that includes all the information needed to fabricate the part.

Question 7

What is an assembly drawing?

Answer 7

A drawing that shows all the components of a part in an exploded form. A parts list is included with an assembly drawing.

Question 8

What is an installation drawing?

Answer 8

A drawing that shows the location of the parts and assemblies of the complete aircraft.

Question 9

What type of drawing is most helpful in troubleshooting a system?

Answer 9

A schematic diagram.

Question 10

What is a block diagram?

Answer 10

A drawing that shows the various functions of a system by a series of blocks. These blocks do not include any detail, but instead indicate what happens in each block.

Question 11

How are dimensions shown of an aircraft drawing?

Answer 11

By numbers shown in the break of a dimension line.

Question 12

What is the purpose of a center line on an aircraft drawing?

Answer 12

It divides a part into symmetrical halves.

Question 13

What is the purpose of a sketch of a repair?

Answer 13

It shows a specific bit of information and includes the minimum amount of detail needed to manufacture the part.

Question 14

Where would an aviation mechanic find aircraft electrical schematics?

Answer 14

In the aircraft maintenance manual or the aircraft wiring diagram manual.

Question 15

What is a fuselage station number?

Answer 15

The distance in inches from the datum, measured along the longitudinal axis of the fuselage.

Question 16

What is a butt line?

Answer 16

A reference line to right or left of the center line of the aircraft.

Question 17

Why is it important to understand and follow tolerances on aircraft drawings?

Answer 17

Tolerances on a drawing control how parts or components fit together. Incorrectly sized parts could cause damage to the aircraft structure or systems.

Question 18

What is the risk of not following the exact specification for the design of alterations or repairs?

Answer 18

Not following the specifications will cause the alteration or repair to be outside of the approved parameters, potentially leading to an unairworthy and unsafe condition.

Question 19

Explain how an aviation mechanic can mitigate applicability risk when using a drawing or schematic.

Answer 19

Always confirm that the drawing or schematic applies to make, model, serial number, and configuration of the aircraft that is being used for.

Question 20

What risks are associated with not using the most current version of a drawing, or not verifying that the drawing applies to the aircraft?

Answer 20

Not using the most current version of a drawing could result in missing important updates.