ATR General Familiarization Practice Test 2026 – Full Exam Prep Guide

The important idea is that an airplane must be loaded so its weight and the center of gravity fall within the certified limits for safe flight. The total weight affects performance characteristics like runway length, climb, and stall speed, while the location of that weight (the CG) determines stability and how effectively the controls work. If the weight or CG is outside the approved range, you can run into insufficient elevator authority, nose- or tail-heavy handling, or unsafe stall behavior, which can compromise safe operation.

By performing a weight and balance check before every flight, you confirm the actual mass and the CG with the planned fuel and payload, ensuring the airplane will behave predictably during all phases of flight. This isn’t about maximizing payload or achieving better fuel efficiency by loading more; it’s about staying within safe limits. It also isn’t just about counting passengers—the load distribution and total mass must be within the certified envelope to maintain control and safety.