In terms of FAA categories, line maintenance is considered what?

• A. Major
• B. Moderate
• C. Critical
• D. Minor

Answer: (D)

Line maintenance is limited in scope and performed on the aircraft to keep it flying between more extensive maintenance events. Because the work is quick, routine, and doesn’t involve major disassembly or overhaul of systems, it fits the minor category. Major maintenance would require significant teardown, overhaul, or testing that goes beyond routine line work, while terms like critical or moderate aren’t formal FAA categories used for line maintenance. So the best fit is that line maintenance is considered minor, reflecting its routine, on-the-line nature and limited impact on airworthiness.