Originally Posted by sierra_mike
at least for the A320 airbus differentiates between "basic forward C.G." (25%CG in take off, approach and landing configuration) and "alternate forward C.G" (forward CG limit) in their stalling speed tables (Vs1g) found in the FCOM.
Thank you for that information - very interesting. Can you clarify if this is to cover different aircraft S/N's having different C.G. limits, or can a given airframe be operated to the basic limit in one flight and the alternate limit on the next flight?