In terms of maintenance levels, what does O-Level refer to?

O-Level maintenance, commonly referred to as organizational level maintenance, represents the lowest tier of maintenance operations tasked with ensuring that aircraft remain safe, airworthy, and operational. This level is typically performed by the aircrew and the ground crew at the operational site where the aircraft is stationed. The scope of O-Level includes preflight, post-flight, and basic repairs, as well as regular inspections and preventive maintenance checks.

By focusing on routine upkeep and minor repairs, O-Level helps to minimize downtime and ensures that the aircraft can safely complete its missions. The emphasis at this level is on performing straightforward tasks that do not require specialized facilities or equipment typically associated with higher maintenance levels.