When calculating weight and balance, what aspect is critical for ensuring safety?

In weight and balance calculations, all the aspects mentioned play essential roles in ensuring the safety and performance of the aircraft. Total aircraft weight is critical since it affects the aircraft's ability to achieve optimal performance during flight, including takeoff, climb, and landing. Exceeding weight limits can hinder the aircraft's performance and compromise safety.

The location of the center of gravity (CG) is equally important. The CG affects the aircraft's stability and control. If the CG is outside the acceptable limits, it can lead to difficulties in handling, particularly during takeoff and landing phases, potentially leading to hazardous situations.

Fuel quantity on board also impacts both total weight and CG location. As fuel is consumed during flight, the weight decreases, and the CG shifts, which can change how the aircraft handles. Maintaining proper fuel levels and understanding their effect on weight and balance is therefore crucial for safe operations.

Considering all these factors together ensures that the aircraft operates within its designed parameters, enhancing safety and performance. Thus, understanding and managing total aircraft weight, CG location, and fuel quantity collectively is vital for safe flight operations.