What is the minimum total flight time required for a commercial multi add-on?

To obtain a commercial multi-engine add-on rating, a pilot must meet specific total flight time requirements set by aviation regulations. The minimum total flight time required is 250 hours of flight time. This total is in alignment with the regulatory guidelines that emphasize the importance of both experience and proficiency, especially in multi-engine flight operations.

The rationale behind this requirement is to ensure that pilots looking to operate multi-engine aircraft possess a sufficient breadth of experience that encompasses various flight scenarios, procedures, and emergency situations. This level of experience helps enhance safety and operational competency when managing the complexities associated with flying multi-engine airplanes.

In contrast, lower hour thresholds, such as 150, 200, or 300 hours, do not fulfill the regulatory requirements, which are specifically established to maintain high safety standards within the aviation industry for commercial operations.