Why is it important to verify the loaded center of gravity is within the aircraft's approved CG envelope before flight?
Why →
The CG envelope defines positions where the aircraft's stability, control effectiveness, and structural loads are within design parameters. Outside this envelope: aft CG may be uncontrollable, forward CG requires excessive control force, and asymmetric loading can impose structural loads. The flight controller can compensate for minor CG offset but not severe imbalance.The trap →
Written W&B calculations are a manned aircraft requirement, not a drone regulatory requirement. But the safety principle applies regardless of regulation. And small UAS are absolutely sensitive to CG. Payload position relative to the frame center absolutely matters.SOURCE → PHAK Chapter 10, Weight and BalanceCHECKED APR 21ACS IV.A.K2MED