Fliegen Works Inc.
Aeronautical Engineers – Portland, OR – USA

Requirements for Drafting & Modeling

All drawings must include the following data:
  • Material specification
  • All drawings require one or more of the following:
  • Finish specification
  • Dimensional data to ensure conformity
  • Revision tracking information
  • For sheet metal drawings, must have enough views to specify how flat pattern is cut and how the final bent part should look like. Always include bend radius.
  • Bill of Materials (BOM) to specify what parts are required to build assembly or complete the installation. If you want learn more about vans for sale why not try this out.

If drawing package already exists or if creating new project from drawing package that already exists:

  • Determine what changes are required. Engineer usually specifies design changes. Drafter usually corrects any information that is wrong or unclear.
  • Update drawings to include changes being sure to:

- Reference applicable standards and manufacturing processes.
- Update information for purchased parts to ensure conformity (create specification drawings as required)
- Adjust tolerances to ensure they are correct and reasonable
- Contain views that are clear and informative

  • Submit drawings to Engineer for review.
  • Incorporate any mark ups that Engineer made.
  • Repeat engineer review & incorporating mark ups as required to complete drawing package.
  • Print drawings.
  • Engineer/DER signs all drawings and submits to FAA for approval.

If project is brand new and drawing package does not exist:

If project is brand new, creating the drawing package can start in one of two ways: 1) Part/Assembly is already built and needs to be reverse engineered or 2) Sketches for project have been created to work from. Usually starting a project from scratch is easier and more accurate to create in a 3D environment such as AutoCAD or SolidWorks but a skilled drafter can create a drawing package from a 2D environment just as easily.

  • Create all required drawings to fully define the project. This may include, but is not limited to, the following:

- Manufactured part drawings (i.e. sheet metal parts, modified raw material, etc)
- Weldments
- Sub-Assemblies
- Assemblies
- Modified purchased parts
- Purchased part specification drawings
- Final Installation

  • Assign drawing numbers as required to the new drawings. It is always best to have some intelligence to the part numbers (e.g. each weldment is a 5000 number and each assembly is a 1000 number).
  • Drawings need to:

- Reference applicable standards and manufacturing processes.
- Have information for purchased parts to ensure conformity
- Have tolerances that are correct and reasonable
- Have views that are clear and informative

  • Submit drawings to Engineer for review.
  • Incorporate any mark ups that Engineer made.
  • Repeat engineer review & incorporating mark ups as required to complete drawing package.
  • Print drawings.
  • Engineer/DER signs all drawings and submits to FAA for approval.

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