A Part 66 license is required for which group of individuals?

A Part 66 license is specifically intended for individuals who perform maintenance on aircraft and who work within the aviation maintenance sector. This includes various categories of personnel involved in airworthiness and safety checks, such as engineers and technicians, rather than just those who operate or pilot the aircraft.

By requiring a Part 66 license for airmen other than flight crew, regulatory bodies ensure that these individuals have adequate training and understanding of the maintenance and safety regulations applicable to various types of aircraft. This license encompasses a broader range of responsibilities, reflecting the critical nature of maintenance roles in the safe operation of aircraft.

In contrast, flight crew and pilots focus primarily on operating the aircraft and managing in-flight tasks, which do not necessitate the specialized knowledge and certifications required for maintenance work. Ground crew may be involved in various support roles that do not specifically require a Part 66, as their duties might overlap with other operational areas. Thus, the correct focus of the Part 66 license pertains to those who are engaged in the technical and safety aspects of aviation maintenance beyond just piloting or flying.