What is the Regulated Takeoff Mass (RTOM) determined by?

Prepare for the ATPL Mass And Balance Test. Access flashcards and detailed multiple choice questions with hints. Boost your exam readiness!

The Regulated Takeoff Mass (RTOM) is determined by the minimum of the maximum structural takeoff mass and the performance limited takeoff mass. The maximum structural takeoff mass is the highest weight that an aircraft can safely take off without risking structural integrity. On the other hand, the performance limited takeoff mass takes into account specific performance factors needed for a safe takeoff, such as runway length, altitude, temperature, and other relevant conditions.

By recognizing that RTOM is the lower of these two values, one ensures that takeoff operations align with both the airframe’s capabilities and the environmental performance constraints at the time of departure. This understanding is crucial for ensuring both safety and compliance with aviation regulations. Thus, B is accurate, as it encompasses the critical factors that must be evaluated in setting the RTOM.

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