Aviation Tool Management with Shadow Boards

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What is the tolerance of a dimension given as a common fraction in an aircraft drawing?

±1/32 in.

±1/8 in.

±1/16 in.

±1/64 in. (correct)

What is the difference between the nominal dimension of a part and its upper or lower limit called?

Upper limit

Nominal dimension

Tolerance

Allowance (correct)

What is the acceptable range of size for a precision cylindrical part?

The range between the upper and lower limits of size (correct)

The range between the nominal dimension and the lower limit of size

The range between the nominal dimension and the upper limit of size

The range between the upper and lower limits of size plus a tolerance

How is the tolerance of a dimension expressed?

As the difference between the upper and lower limits of size Signup and view all the answers

What is the relationship between the tolerance and the upper and lower limits of size?

The tolerance is the difference between the upper and lower limits of size Signup and view all the answers

Why is the acceptable range of size usually smaller for mating cylindrical parts than for sheet metal repairs?

Because mating cylindrical parts require a smaller tolerance Signup and view all the answers

What is the primary purpose of a shadow board in aviation maintenance?

To provide visual feedback on tool location and status Signup and view all the answers

What is the benefit of using color-coding on shadow boards and tools?

It makes it easier to identify misplaced tools Signup and view all the answers

Why do some maintenance organisations require employees to permanently mark their tools?

To ensure tool accountability and identification Signup and view all the answers

What is the advantage of posting shadow boards in plain sight of all tool users?

It provides immediate feedback on tool status Signup and view all the answers

What information does a shadow board typically convey?

Tool location and availability status Signup and view all the answers

What is the result of using shadow boards in aviation maintenance?

Elimination of the need to search through toolboxes Signup and view all the answers

What is the prescribed difference between the maximum material limits of mating parts?

Allowance Signup and view all the answers

What is the maximum material limit of a part?

The limit of size that provides the maximum amount of material Signup and view all the answers

What is the result when the maximum diameter of the bolt is 0.001 in.less than the minimum diameter of the hole?

Minimum clearance Signup and view all the answers

What is essential for engineers and technicians when using measuring tools?

They must use the tools correctly and efficiently. Signup and view all the answers

What is the result when the maximum diameter of the bolt is 0.001 in.greater than the minimum diameter of the hole?

Maximum interference Signup and view all the answers

What information should be included on the label for precision tooling and equipment?

The date last tested, the next inspection or calibration date, and the authorised person's signature or stamp Signup and view all the answers

How often should inspections and calibrations of precision tooling and equipment be conducted?

At more frequent intervals than the manufacturers' instructions. Signup and view all the answers

What is necessary to check before using a precision measuring tool?

The tool's calibration tag and that it will 'zero' correctly. Signup and view all the answers

Why is regular inspection and calibration of precision tooling and equipment necessary?

To ensure the tools are within the inspection or calibration period Signup and view all the answers

What is a requirement for using personally owned measuring tools in the regulated civil aviation industry?

The tool must be approved by the aircraft operator or MRO organisation. Signup and view all the answers

What is the purpose of maintaining a register for precision tooling and equipment?

To record the calibrations and standards used. Signup and view all the answers

What should be done periodically with torque wrenches?

They should be checked for accuracy – calibration. Signup and view all the answers

What is the recommended procedure for disposing of mixed two-pack sealants?

Cure them completely before disposing according to local regulations Signup and view all the answers

How are most aircraft drawings dimensioned?

From a reference edge from which all dimensions are made Signup and view all the answers

What is the conventional method for placing dimensions on an aircraft drawing?

Writing all dimensions parallel to the bottom of the drawing Signup and view all the answers

What is the nominal dimension of an aircraft part?

The size stated on the drawing Signup and view all the answers

What is the tolerance of an aircraft part?

The difference between the nominal dimension and the upper and lower limits of size Signup and view all the answers

What symbol represents inches in drawings and dimensional specifications?

″ Signup and view all the answers