Which maintenance type is typically managed on a major overhaul cycle and tracked by ARM for forecasting MC?

• A. Depot maintenance
• B. Line maintenance
• C. Cosmetic maintenance
• D. Emergent maintenance

Answer: (A)

Depot maintenance is the major overhaul work that happens on a defined cycle and is tracked by ARM to forecast mission capability. This type involves substantial overhaul and inspection of aircraft or systems, taking the asset out of service for an extended period. Because its timing and duration are known in advance, ARM can schedule parts, manpower, and logistics to predict when the fleet will be unavailable and how that will impact overall MC.

Line maintenance is ongoing, routine work done at the operating location and doesn’t follow a long-cycle overhaul plan. Cosmetic maintenance focuses on appearance and minor repairs, which generally don’t drive MC forecasting. Emergent maintenance is unplanned and unscheduled, so it isn’t used for forward-looking cycle planning.