MIL-W-25140B, MILITARY SPECIFICATION WEIGHT AND BALANCE CONTROL SYSTEM 9FOR AIRCRAFT AND ROTORCRAFT) (31 OCT 1977) [S/S By SAWE-RP7]., This specification covers the requirements for Weight and Balance Control Systems to provide for the management of mass characeristics program and to facilitate the preparation and submission of data in standard format during the life of an aircraft or rotorcraft contract.