Explain 'line maintenance' vs 'depot maintenance' and ARM's interest.

• A. Line maintenance is quick daily checks; depot maintenance is major overhaul; ARM tracks these to forecast MC and scheduling.
• B. Line maintenance is the same as depot maintenance.
• C. ARM only tracks depot maintenance.
• D. Line maintenance only occurs quarterly.

Answer: (A)

Line maintenance covers the routine, quick checks and servicing done at the aircraft’s operating location between flights to keep it airworthy for daily operations. Depot maintenance is the heavier work performed in a dedicated facility, including major overhauls, structural repairs, component overhauls, and extensive testing, typically scheduled less frequently.

ARM (Aviation Resource Management) tracks data from both line and depot maintenance to forecast Mission Capability (MC) and to plan scheduling. By monitoring line maintenance, it helps predict short-notice availability and turnarounds; by monitoring depot maintenance, it accounts for longer downtimes required for major work. This combined view allows scheduling that keeps aircraft ready for missions while minimizing unexpected disruptions.