Which of the following can a private pilot perform as preventative maintenance?

A private pilot can perform preventative maintenance on specific tasks outlined in the regulations, and one of those tasks is replacing batteries. This is generally permissible because it is considered a simple task that does not require specialized technical knowledge or skills that a trained mechanic would possess.

Preventative maintenance tasks must meet certain criteria and be straightforward, which is why replacing batteries falls into this category. It is important to adhere to the guidelines set forth by the FAA, which detail what a private pilot is authorized to do in terms of maintenance without needing to rely on a certified mechanic.

The other options involve more complex tasks. Engine overhauling, for instance, is a significant and intricate procedure requiring specialized training and experience. Painting an aircraft requires knowledge of specific materials and processes to ensure safety and compliance. Installing new avionics involves significant electrical work and system integration, which is typically beyond the scope of preventative maintenance a pilot is authorized to perform.

Understanding what constitutes preventative maintenance is vital for safety and compliance with aviation regulations, allowing private pilots to perform minor repairs and adjustments efficiently while ensuring that they do not engage in work that exceeds their certification.