"A Civil Aviation Safety Authority spokesman says the agency is required to assess changes to airspace based on risk, “not hard triggers...."
"The CASA spokesman says that issues relating to the airspace system are not “regularly or repeatedly being identified as the cause of accidents or incidents."
2 quotes from CASA that should be force-fed back to them whenever they embark on yet another non-evidence-based crusade to enforce unnecessary maintenance, or the downgrading of pilot privileges due to medical non-conditions (e.g. impaired colour vision), that are killing our industry!