Design for maintainability $($DFMt$)$ is

$.$

the systematic consideration of maintainability issues over a

product's projected life cycle in the design and development

process

an approach to product and process design which seeks to ensure

that the organization is capable of providing products or services

that meet Six Sigma quality levels$-$in general, no more than $3\mathrm{.}4$

defects per million opportunities

an approach to new product design that addresses environmental,

safety, and health issues over the product's projected life cycle in

the design and development process

the systematic consideration of manufacturing issues in the design

and development process, facilitating the fabrication of the

product's components and their assembly into the overall product

IDON'T KNOWYET