Final answer:
A large team with a hierarchical management structure is justified in complex aerospace engineering projects like the design and manufacturing of a new jet, to manage the complexity and maintain high standards of execution.
Step-by-step explanation:
It is justifiable to have a large team of people with a hierarchical management structure when embarking on the complex process of designing and manufacturing a new jet. The design and production of a modern airplane, such as the Boeing 777, necessitates the collaboration of multidisciplinary teams that include aerospace engineers, electrical engineers, structural engineers, and industrial engineers, among others, due to the intricate interrelations between various aircraft systems. A lead engineer, with the support of supervisors and certified PEs, can ensure that each component and phase of the design process is executed efficiently, maintaining the project on schedule and adhering to high standards of quality and safety.