What type of checks are categorized under 'special inspections' in NAMP?

Special inspections within the NAMP framework are specifically defined as non-routine inspections that occur at designated intervals, often depending on specific conditions or operational requirements. These inspections are essential for ensuring the continued airworthiness and safety of naval aircraft. They may focus on identifying potential issues that could arise from extended use or particular operational stresses not covered by standard inspections.

The rationale for categorizing checks under special inspections involves recognizing that these are not common or regularly scheduled, like routine pre-flight checks, but are triggered by certain criteria or events (such as time in service, the number of flight hours, or significant repairs). This distinction is critical for maintaining the integrity of the aircraft and ensuring that it operates safely and effectively.

In contrast, routine pre-flight checks are standard inspections performed consistently before each flight. Checks performed exclusively by pilot officers do not fall under the category of inspections governed by maintenance standards and are not part of the formal maintenance inspection program. General inspections that occur every six months are typically aligned with scheduled maintenance rather than specific criteria that warrant a special inspection. Therefore, the identification of special inspections as non-routine inspections at specific intervals is the correct answer.