How many parts need to be fabricated by the mechanic in the construction and installation of one doubler?

The process of constructing and installing a doubler typically involves multiple components, specifically in the context of aviation, where a doubler is used to reinforce an area of an aircraft structure. Generally, a doubler is a plate that is added to a structural area to provide extra strength, particularly in high-stress locations.

While the multiple-choice answer provided states 101 parts, it seems counterintuitive, as there are typically fewer parts involved in the basic fabrication of a doubler. The core understanding of manufacturing a doubler usually revolves around one main part (the doubler itself) and might include additional components such as fasteners or rivets needed for its installation.

In practice, if a complex assembly or structural reinforcement like a doubler requires very specific or detailed configurations, it could lead to an exceptionally high number of parts being involved, especially in the case of larger or more complicated components on aircraft. Generally, each bolt, nut, or additional support sheet can be counted as a separate part in total construction.

Thus, while a typical doubler fabrication may only require the fabrication of a primary piece, the total number of items involved in the construction and installation process could indeed lead to a very high number like 101 when considering every individual component required for