For consistency this article will use the word drawing. Those traditional methods have given way to more modern methods - yet the term “blueprint” is still used today. The aircraft maintenance technician, AMT, must be able to interpret this graphic, determine drawing orientation, the correct drawing affectivity and revision status, and all of the applicable note information.īefore we get started, when drawings were first reproduced in the mid 1800s, early technology would produce a document having a blue background with white lines and writing. The basic purpose of the blueprint is to describe parts and repairs in a graphical fashion and provide a host of design information to the end user regarding dimensions, processes, specifications, tolerances, and more. ► Material or material used in making the part ► Heat treatment information (if any) ► Final protective finish (if any) ► Tolerance (unless otherwise specified) that apply to all dimensions that do not have individual tolerance included with the basic dimension.In the world of aircraft maintenance and construction, blueprints are regularly used to perform a variety of tasks. Including names or initial of person responsible for project, date which the drawing was released etc. ► Drawing number assigned to the part ► Scale indicating the size of the drawing compared with the actual size of the part ► Drafting room info. ► Name of the company and location ► Name of part ► Part number, die number, forging number, etc. What kind of information do you think is contained in the Title Block of a drawing? Thus a title block contains information not directly related to the construction of an object, but which is necessary for its manufacture. This information is vital and must be place on the drawing where it can be accessed easily and clearly and this is where the title block becomes useful. Where is the Title Block located on a shop drawing?Ī title block is necessary because an engineer or draftsperson must provide essential information without adding to the complexity of the drawing. SUBASSEMBLY DRAWING : the subassembly drawing shows two or more parts joined together in the shop assembling procedure to form a unit of an object or piece of equipment, which is not itself a complete assembly.ĭETAIL DRAWING : a detail drawing describes an individual part and contains all the information necessary to manufacture said part. Note that only principle dimension dealing with assembly or installation are included on the main assembly drawing. MAIN ASSEMBLY DRAWING : the main assembly drawing shows a finished object, indicating all it component parts and how all the component part relate to each other. There are two types of Assembly Drawing: The main assembly drawing and subassembly drawing A description of the relationship of each part to the other in an assembly.There has to be a descriptive title on each drawing.Explanatory notes (both general and specific) on the object or part for examples notes such as material, heat treatment, finish etc.The figured dimension of the object or part.The full graphic representation of the shape of the object or part. What information do you think has to be included on a working drawing? A presentation by professor Romel CiprianiĪ working drawing is an engineering drawing that provides all the information necessary to manufacture an object or a part and it is divided into two general classes: Assembly Drawings and Detail Drawings.
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