What are the two main categories of maintenance?

The correct categorization of maintenance in the context of aircraft armament systems primarily distinguishes between on-equipment and off-equipment. On-equipment maintenance refers to tasks performed directly on the aircraft systems or components while they remain installed on the aircraft. This may include inspections, adjustments, and repairs that can be executed without removing parts from the aircraft. Conversely, off-equipment maintenance entails work performed on components that have been removed from the aircraft, which might include extensive repairs or overhauls that necessitate specialized equipment or environments.

Understanding the difference between these two types of maintenance is crucial for effective aircraft management and ensures that maintenance protocols are appropriately followed, maximizing operational readiness and safety. This classification helps streamline processes and direct resources efficiently, leading to minimal downtime and maintaining the operational capabilities of the aircraft.