The subjection of ALL pilots to an instrument check when they all had valid instrument ratings is illegal. They will have to defend this in the future in a court of law
What a pile of rubbish! The basis of any licencing system that issues authority to control major transport equipment of any ilk, where intensive skills and knowledge are required... be it aeroplanes, trains, ships, or what have you... is based on those skills being checked on a regular basis to ensure proficiency, and that bad habits are not creeping in.
Despite CASA's deplorable record, in this case they have done the right thing and gone through Tiger with a dose of salts and smartened them right up. Two recorded basic-airmanship failure events, and possibly more that were not discovered, were indicative of a poor environment in Tiger, starting from the CEO on down... that if left without intervention, almost certainly had the potential for a major aviation disaster, along the lines of the Transair Metroliner crash.
The culture, the training, and the skills of any major transport organisation has to be under regular and independent scrutiny, and I for one, am glad that CASA exercised their authority in this case.