30/30 GREEN LIGHT
You hit the nail on the head so to speak as that is exactly how
VB removed engineers from doing preflights during transits.
VB changed their System of Maintenance to reflect the Boeing MPD document,then instructed the maintenance providers that anyone found to be in breach of the System Of Maintenance would be also in breach of the CASA REGULATIONS and that audits would commence to monitor compliance.The maintenance providers(holders of the Certificates of Approval under CAR 30) then enforced said policy as their certificate of approvals where as "stake" informing staff they have no problems sacrificing personnel to protect their CofA if required.