Quite obviously not an exhaustive audit then. They failed to take into account the multitude of latent threats that saturate the industry.
Engineering cutbacks, fuel saving initiatives, efficient (read predatory) roster practices, sub-sub-subcontracts, desperate management practices, cabin crew pay and conditions approaching poverty levels, shorter turn around times, less ground staff, failing morale, and the real doozie, a regulator that doesn't/can't afford to care.
Only a matter of time till we are witness to a tragedy in this country. They have whittled away everything but the bare minimum components required to maintain the illusion of safety.