Interesting HN39, thanks.
Regarding QF72, for the temp I don't know, but for the weight, my guess would be somewhere between 187 and 185T ? as the event happened after 3:10 of flight time and TOW was at 207T.
Originally Posted by PJ2
We don't know what the AoA was during the exercise of course because there is no cockpit indication of such. Traditionally the industry has never used AoA because for any specific weight there is a direct, corresponding relationship between CAS and AoA regardless of altitude. "For every air speed - as indicated on the Air Speed Indicator - there is a corresponding angle of attack at which level flight can be maintained (provided the weight of the aeroplane does not change)" - Kermode, Mechanics of Flight, 1962.
That's the part in red I'm not sure about, but I don't have the knowledge so I'll keep it quiet, maybe someone would explain more ... ?
The best would be to flight test these lower speeds during a ferry at FL something, but I still need/like my job.