What is the purpose of a Phase inspection?

The purpose of a Phase inspection is to conduct scheduled maintenance at specific intervals based on flight hours or calendar time. This type of inspection is organized into phases, with each phase addressing particular components or systems of the aircraft to ensure they are functioning correctly and safely. By segmenting inspections in this manner, it allows for more manageable and systematic oversight of the aircraft's condition, ensuring that worn or deteriorated components can be identified and replaced before they lead to more significant issues. This systematic approach is crucial in maintaining aircraft readiness and safety over their operational lifespan.

Other options focus on different aspects of aircraft maintenance: thorough examination after each flight pertains to routine checks that ensure immediate flight safety, periodic maintenance checks may not be as structured or phased, and preflight safety checks are typically focused on immediate issues prior to flight rather than broader maintenance concerns laid out in a Phase inspection format.