Originally Posted by D Bru
Assuming that 447 @ 2:10 at LKP was still at its FL350, it took still four minutes of flight from there before the CVS + 1800 ft/min message.
I stand to be corrected, but wouldn’t that imply that the V/S of 447 from LKP until then could not have been as such to make it end up (very) close to LKP.
It isn't obvious to me that this excludes impact close to LKP. Couldn't the airplane have turned thru 360 degrees in those 4 minutes?
It is some time ago that the CVS advisory was discussed. Although other explanations cannot be excluded, it was theorized that the message was probably triggered by the Negative Relief Valve opening. Since it opens at 1 psi negative cabin pressure differential, and assuming cabin altitude was still 7500 ft, that would put the event at around 5000 ft altitude.
Just to throw out another arbitrary number, at 220 kTAS, 20 deg. bank, a 360 deg. turn takes about 3'20".
Hoping that this qualifies for feedback,
mm43;
following your scenario, and thinking about the shape of the 'patch', could it be that the bulk of the fuel was lost at impact, to be spread by the northerly wind in one direction, while the rest released on the way down surfaced on another trail?
sincerely,
HN39