Dataset for the Assembly Line Preliminary Design Optimization Problem presented in the conference CP'23. The Assembly Line Preliminary Design Problem consists in defining, for a given aircraft design, the best assembly line layout and the type and number of machines equipping each workstation.

This dataset contains data coming from a real assembly line manufacturer. Each instance describes a scenario for building an aircraft (a build process) and details which tasks should be performed, and which types of machines are used.

The objective of the problem considered in the original paper is to design a sert of pareto optimal assembly lines (number or stations, rate, number of machines) with regards to thé investment costume, time to build the entire aircraft and rate.