Aircraft weight and balance

This section begins with the basic principle of aircraft weight and balance control, emphasizing its importance and including examples of documentation furnished by the aircraft manufacturer and by the FAA to ensure the aircraft weight and balance records contain the proper data.

Procedures for the preparation and the actual weighing of an aircraft are described, as are the methods of determining the location of the empty weight center of gravity (EWCG) relative to both the datum and the mean aerodynamic chord (MAC).

Loading computations for general aviation aircraft are discussed using both loading graphs and tables of weight and moment indexes.

Information is included that allows an FAA-certified mechanic or repairman to determine the weight and center of gravity (CG) changes caused by repairs and alterations or removal and installation of equipment. This includes instructions for conducting adverse-loaded CG checks, also explaining the way to determine the amount and location of ballast needed to bring the CG within allowable limits.

The unique requirements for helicopter weight and balance control are discussed, including the determination of lateral CG and the way both lateral and longitudinal CG change as fuel is consumed.

Weight and Balance Control

Weight and Balance Theory

Weighing the Aircraft and Determining the Empty Weight Center of Gravity

Light Sport Aircraft Weight and Balance Control

Single-Engine Aircraft Weight and Balance Computations

Multiengine Aircraft Weight and Balance Computations

Center of Gravity Change After a Repair or Alteration

Weight and Balance Control—Helicopter

Weight and Balance Control—Commuter Category and Large Aircraft

Use of Computer for Weight and Balance Computations