One of the key roles of maintenance controllers includes setting departmental goals and developing effective strategies to meet those goals. Aircraft maintenance and aeronautical repair are the two major functions of aviation maintenance controllers and these tasks are necessary to ensure the unit’s readiness to perform its mission. Another key function of maintenance controllers is to manage the maintenance of aircraft, aircraft components, and aviation support equipment (Maintenance Management Philosophy). They are also assigned to manage and schedule aviation support equipment inspections. The maintenance controllers have a crucial role to play in informing the Aircraft Maintenance Officer of work progress and advising them on matters regarding the maintenance of aircraft, aircraft components, and aviation support equipment. They direct and monitor requisition and allocations of materials, tools, and aircraft components. They have to use maintenance instruction manuals for the appropriate selection of aircraft models, associated systems, aeronautical components, and aviation support pieces of equipment. Maintenance controllers are strictly assigned to deal with the collection and dissemination of data that are related to aircraft components and aviation support equipment maintenance. Finally, they also function to ensure that the required materials and tools are available for use by closely working with the Aviation Supply Department. More functions of a maintenance controller are described in Schedule 9 of the 1988 CARs. The CAMO is a new proposed change to the regulation and presently it can be substituted for the words maintenance controller because the CAMO’ all goals and purposes are almost the same as that of a maintenance controller. Development of a Maintenance Control Manual (MCM) and coordination of arrangements set up in the MCM are some of the common functions of a maintenance controller and CAMO (Topic No. 6, Maintenance Control).