Beech Baron down with 2 fatalities - N585CK

[Sixstring2k]

8 hours ago, _Jim said:

Let me excerpt just the part of interest - the altitude and temperature plots. I don't know how this will turn out, but I'll give it a try-

 

Thank you for the very informative reply. Great discussion, so the outside temp was 2.5c and warming with altitude per this chart. 

[Scott Dennstaedt, PhD]

On 1/14/2022 at 1:24 AM, Sixstring2k said:

Thank you for the very informative reply. Great discussion, so the outside temp was 2.5c and warming with altitude per this chart. 

Just to be clear, this particular radiosonde observation showed that the static air temperature at ~8,000 feet was +2°C.  And then cooling to 0°C at ~9,000 feet. This observation was approximately 100 nm northeast of the accident site. Near the accident site, the temperatures were warmer such that the freezing level was nearly 12,000 feet.  So any aircraft taking off and climbing in this environment would have not accreted or expect to accrete any airframe ice.  Eventually as the flight headed west toward Denver, the freezing level was trending lower and would have been below freezing upon reaching the KC area...even so, the amount of moisture at 8,000 feet was negligible in the KC region. It's not until the last third of of the flight where icing conditions would have been problematic as can be seen by this G-AIRMET valid at 03Z.  

[Scott Dennstaedt, PhD]

The NTSB prelim report can be found here.  Nothing revealing at this point.