A Part 91 Pilot operates under FAA regulations in Part 91, which govern non-commercial flights such as private, corporate, and personal aircraft operations. These pilots do not fly for hire, meaning they are typically employed by private owners, businesses, or flight departments rather than airlines or charter companies. Their duties include pre-flight planning, ensuring aircraft readiness, and adhering to safety protocols. Unlike Part 135 or Part 121 pilots, they have more flexibility in flight schedules and operational requirements. However, they must still comply with FAA regulations, including currency and proficiency requirements.