15. Central to the proposed GD is the concept of aeromedical significance. Civil Aviation Rule (CAR) Part 67 defines aeromedical significance as: a medical condition is of aeromedical significance if, having regard to any relevant general direction, it interferes or is likely to interfere with the safe exercise of the privileges or the safe performance of the duties to which the relevant medical certificate relates. While there is no issue with aeromedical significance being used as a standard, it would appear that there is little in the way of guidance for determining what exactly, in terms of a flight operation, is significant in relation to CVD. In answer to a question regarding the reasoning behind the flight restrictions for a pilot who is CVD, the PMO answered that the “restrictions are historical”. This is a key issue for the Panel’s deliberations particularly in relation to the risk posed by a pilot with CVD, the different operational environments pilots operate in, and who should be determining restrictions to which a pilot is to operate.
16. The PMO also commented that he thought practical flight tests are unreliable. In the Panel’s opinion a flight examination has the same status as a medical examination in ensuring that a pilot is not a threat to the public and renewing their privilege to fly.
Given Dr Watson's past