To act as pilot in command of a single-engine aircraft for air taxi service under night VFR without passengers, what must a commercial pilot have?

To serve as the pilot in command of a single-engine aircraft for air taxi service under night VFR without passengers, a commercial pilot must have a competency check. This is a specific requirement outlined in the regulations that ensures pilots have the necessary skills and knowledge to operate the aircraft safely in a night environment, particularly under night VFR conditions.

The competency check is essential because it assesses the pilot's ability to handle the challenges presented by night flying, such as reduced visibility and different visual references. Pilots must demonstrate their capabilities in various scenarios to confirm that they can operate effectively and safely at night.

While other options, such as having a type rating for the aircraft, a night rating, or a PPC endorsement, are important qualifications in different contexts, they are not the specific requirement for conducting air taxi services at night under VFR without passengers. The focus on competencies ensures the pilot's readiness and adherence to safety protocols in such operational environments.