Comprehensive Study Guide
Center of Gravity (CG) Manifest Study Guide
Master rotational torque moments, datum arms, forward vs aft CG stability redlines, and inflight fuel burn shifts.
Editorially reviewed by the AviCalculator team
1. Longitudinal Balance Physics
Aircraft are certified with Maximum Gross Ramp Weights and approved longitudinal Center of Gravity (CG) Envelopes.
CG Location (inches aft of datum) = Total Sum of Moments / Total Gross Weight
- Forward CG Hazards: Heavy nose requiring excessive up-elevator trim, increasing drag and risking nosewheel strike on landing flare.
- Aft CG Lethality: Severe pitch instability. If stalled, elevator lacks down-pitch authority and spin recovery becomes impossible due to rudder blanking.
- 100LL Fuel Weight: Aviation gasoline weighs exactly 6.0 lbs per US gallon.
Test Your Knowledge
You've reviewed the theory. Now apply it to real FAA/EASA checkride questions to verify your understanding.