Under what conditions can you carry passengers single engine at night and/or under IFR in an air taxi?

Carrying passengers in an air taxi operation using a single-engine aircraft during night and/or Instrument Flight Rules (IFR) conditions is subject to specific regulatory requirements for safety and certification. The correct condition is that both the operator and the aircraft must be approved for such operations.

This means that the operator needs to have the appropriate certifications that specifically allow them to conduct air taxi services under these challenging conditions. The aircraft itself also must meet the necessary safety standards and have the appropriate equipment for night flying and IFR operations. This often includes having sufficient instrument capabilities, lights, and other safety features that comply with aviation regulations for operating in low visibility or at night.

Regulatory authorities require these certifications to ensure that safety is prioritized in operations that can carry increased risks due to reduced visibility or reliance on instruments for navigation. This establishes a higher standard of safety and compliance for operators than simply having a certified operator or just the aircraft being safe. Thus, both elements are critical for ensuring passenger safety in such operations.