Which appropriation type is used for the ongoing costs of operating and maintaining systems?

Which appropriation type is used for the ongoing costs of operating and maintaining systems?

• A. RDT&E
• B. Operations and Maintenance (O&M)
• C. Unresolved supportability issues
• D. Aircraft range modification

Answer: (B)

This question tests how funds are allocated to cover different aspects of a system’s life cycle, distinguishing the ongoing operating costs from development or upgrade activities. Ongoing operating and maintenance costs are funded by Operations and Maintenance (O&M). This category covers the day-to-day expenses needed to keep a system running and ready, such as personnel salaries for operators and maintainers, routine maintenance, depot repairs, spare parts, supplies, fuel, utilities, and related admin support. RDT&E funds relate to research, development, testing, and evaluation of new systems or major upgrades—not daily operations. Unresolved supportability issues isn’t a type of appropriation. It’s a status or risk category that can affect funding decisions but isn’t itself an funding type. Aircraft range modification refers to a specific modification project and is not the ongoing operating-cost category by itself (it’s typically funded under procurement or, in some cases, O&M if it relates to sustainment).

This question tests how funds are allocated to cover different aspects of a system’s life cycle, distinguishing the ongoing operating costs from development or upgrade activities. Ongoing operating and maintenance costs are funded by Operations and Maintenance (O&M). This category covers the day-to-day expenses needed to keep a system running and ready, such as personnel salaries for operators and maintainers, routine maintenance, depot repairs, spare parts, supplies, fuel, utilities, and related admin support.

RDT&E funds relate to research, development, testing, and evaluation of new systems or major upgrades—not daily operations. Unresolved supportability issues isn’t a type of appropriation. It’s a status or risk category that can affect funding decisions but isn’t itself an funding type. Aircraft range modification refers to a specific modification project and is not the ongoing operating-cost category by itself (it’s typically funded under procurement or, in some cases, O&M if it relates to sustainment).