Originally Posted by Clearedtoreenter
Could this be the 'new research' evidence we're looking for?
This is might be the "new research":
http://www.caa.co.uk/docs/33/200904.pdf
and pretty much the same research by the same authors in an FAA report:
http://www.faa.gov/data_research/res...dia/200911.pdf
Unlike the Qinetiq study, these two reports actually includes the results of controlled tests. However, the main goal of these papers is to show that the CAD test is a better test than ishihara etc for diagnosing ability to read a simulated PAPI. What's missing is evidence that the CAD test (or any other colour vision test) has a correlation to *flight safety*.
- S