What does 'aircraft cleaning and corrosion control' involve?

The focus of 'aircraft cleaning and corrosion control' is primarily on procedures that ensure the aircraft's surface is kept clean and effectively treated to prevent issues like rust and material degradation. This process is crucial for maintaining the structural integrity and safety of the aircraft, as corrosion can lead to severe damage if left untreated. Regular cleaning helps remove contaminants such as dirt, grease, and salt, while proper treatment can prevent environmental factors from affecting the aircraft's materials. This is an essential aspect of maintenance that supports longevity and reliability in aviation operations.

The other listed options do not encompass the full scope of aircraft cleaning and corrosion control, as they focus on different aspects of aircraft maintenance or service that are not directly related to preventing corrosion or maintaining surface integrity.