Some relevant reading material that some may be interested in.
The correct definition of Va is explained at
https://www.aopa.org/news-and-media/...-understanding with a link to the USA FAA's special airworthiness information bulletin on the subject.
Light aircraft certified to FAR 23 amendment 45 or later will not have Va (design maneuvering speed) in the manual, it will be Vo, the operating maneuvering speed, as explained in this extract from FAA AC 23-19A.
