Originally posted by HN39 ...
Clever molecules that avoided the ice detectors?
Very clever!
Which leads me to ask if the ice detectors have always detected ice in other recorded UAS events?
Having had another look at the ATSB's report on two UAS events recorded by VH-EBA on 15 Mar and 28 Oct 2009, I failed to find any reference to ice detectors mentioned. Anyway, I extracted the Icing Environment graphic from the report and plotted the AF447/F-GZCP data on it.
The argument for "super-cooled" water being the culprit, goes along the lines that as the probes are already heated, they provide the ideal impurity point for the "seeding" and instantaneous conversion of super-cooled water into ice. Likewise, the melting of this ice occurs in a relatively short time.