I think you’ll find that lbs in yr right-ese means “Logbook Statement”. In yr right’s world, the logbook statement is the horse dragging the entire regulatory cart. A logbook statement is, in fact, the cart that follows the election to use either the manufacturer’s maintenance schedule, the CASA maintenance schedule (i.e. Schedule 5 of the CARs) or an approved system of maintenance as the schedule of maintenance for an aircraft.
(I also think you’ll find that the certificate of airworthiness certifies the compliance of an airframe with the type design, in the applicable airworthiness category e.g. transport, normal, utility…. . Charter etc is merely the classification of the operation in which the airframe happens to be engaged from time to time.)