Aircraft Maintenance: Standards of Workmanship

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Questions and Answers

What is the primary consideration of workmanship in the aircraft maintenance environment?

The attitudes of the AME and team

The quality of the product

The cost of production

The art of skill of a worker (correct)

What is the purpose of standards in the aircraft maintenance environment?

To reduce the cost of production

To increase the competitiveness of a company

To improve the quality of life

To define accurate measurements and improve product quality (correct)

What is the ultimate responsibility of an AME in terms of workmanship?

Duty of care to the passengers (correct)

Duty of care to the team

Duty of care to themselves

Duty of care to the equipment

What is a standard in the context of aircraft maintenance?

An agreed way of doing something Signup and view all the answers

What is the benefit of standards to individuals?

Improved health and safety Signup and view all the answers

What is the relationship between workmanship and standards in the aircraft maintenance environment?

Standards are a measure of workmanship Signup and view all the answers

What is the primary purpose of area control in tool management?

To prevent foreign object damage and ensure safe operation of aircraft Signup and view all the answers

What documents should be available for all materials used in the workshop?

Material Safety Data Sheet (MSDS) and a specification sheet Signup and view all the answers

What is a characteristic of tools allowed in a tool control area?

They have been permanently identified Signup and view all the answers

What should be done with personal tools in FOD critical areas?

They should be documented on a tool list and transported in a bag or small case Signup and view all the answers

Where should flammable materials be stored when not in use?

Appropriate flammable storage facility Signup and view all the answers

Why is it essential to comply with the MSDS for individual materials?

To ensure safety and use PPE Signup and view all the answers

What is the purpose of designating FOD critical zones or areas?

To prevent misplaced tools from becoming a hazard to the safe operation of the aircraft Signup and view all the answers

What should you do when you have finished using a product?

Properly seal the container Signup and view all the answers

What should be implemented in areas where work controls are in place?

Appropriate signs, floor striping, and access limitations Signup and view all the answers

What is the purpose of refrigerated storage for some aircraft sealants?

To ensure they stay usable for their shelf life Signup and view all the answers

What should be done with all items entering or removed from a tool control area?

They should be accounted for Signup and view all the answers

What should you check before using a product?

The expiry date/shelf life Signup and view all the answers

What is the recommended frequency for inspections and calibrations of precision tooling and equipment?

At more frequent intervals than recommended by the manufacturer Signup and view all the answers

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

They must be maintained by an approved organisation and approved by the aircraft operator or MRO Signup and view all the answers

What is the purpose of calibrating a precision measuring tool?

To ensure the tool is accurate and efficient for required measurements Signup and view all the answers

What should be done before using a precision measuring tool?

Ensure the tool will 'zero' correctly and is within its calibration period Signup and view all the answers

What is the tolerance of a dimension if the nominal dimension is 5.300 in. and the upper limit is 5.310 in.?

±0.020 in. Signup and view all the answers

Why is it necessary to periodically check torque wrenches for accuracy?

Because they are precision measuring tools Signup and view all the answers

What is the allowance for sheet metal work based on the following example: 5.300 in. + 0.010 in. - 0.000 in.?

The difference between the nominal dimension and the upper limit of size. Signup and view all the answers

What is the requirement for calibrating a precision measuring tool?

It must be calibrated by an approved person or organisation Signup and view all the answers

In aircraft drawings, what is the assumed dimension tolerance of a common fraction?

±1/64 in. Signup and view all the answers

What is the acceptable range for a precision cylindrical part?

The range between the upper and lower limit of size. Signup and view all the answers

What is the tolerance of a dimension if the nominal dimension is 0.3125 in. and the upper and lower limits are +0.0005 in. and -0.0005 in.?

±0.0005 in. Signup and view all the answers

What is the difference between the upper limit and the lower limit of size for a given dimension?

Tolerance Signup and view all the answers

Study Notes

Workmanship

Workmanship refers to the degree of skill with which a product is made or a job is done.
It takes into account the art of skill of a worker, the quality of the product, and the attitudes of the AME, team, and organization.
Duty of care includes self, others, and equipment.

Standards of Workmanship

A standard is an agreed way of doing something, which can be recorded and published formally or informally.
Standards provide benefits to business and individuals, including:
- Defining accurate measurements and lowering production costs
- Improving product performance, quality, uniformity, interoperability, and functionality
- Providing a method to improve health, safety, the environment, communications, competition, international trade, and quality of life

Tool Control and Foreign Object Damage (FOD)

Area control involves designating areas where work controls are implemented, using signs, floor striping, and access limitations.
Tool identification involves permanently identifying tools using methods such as color coding, engraving, or prominent markings.
Tool control in FOD critical areas involves accounting for all items taken into these areas, documenting personal tools, and transporting tools in a bag or small case.
Materials used in the workshop should have a Material Safety Data Sheet (MSDS) and a specification sheet available.

Material Storage

Flammable materials should be stored in an appropriate flammable storage facility when not in use.
Toxic materials require compliance with the MSDS, using PPE and working in a well-ventilated environment.
Aircraft sealants may require refrigerated storage to ensure they stay usable for their shelf life.

Precision Tooling and Equipment

A register should be maintained for all precision tooling and equipment, including calibrations and standards used.
Inspections and calibrations should be done in accordance with the manufacturer's instructions.
Measuring equipment should be calibrated by an approved person or organization and have a prescribed life limit between calibrations.

Torque Wrenches

Torque wrenches are precision measuring tools that should be periodically checked for accuracy (calibration).
The tolerance can be expressed as ± (e.g., ±0.020 in.).

Tolerances and Allowances

Tolerance is the difference between the nominal dimension and the upper and lower limit of size.
Allowance is the difference between the nominal dimension of a part and its upper or lower limit.
Precision cylindrical parts have a maximum and a minimum allowable size, and the part is considered acceptable if its size falls within that range.

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Description

Test your knowledge of workmanship standards in the aircraft maintenance industry, including factors such as skill, quality, attitude, and duty of care. Learn how to ensure high-quality work and maintain safety standards in aviation.