Update: Today's (Tu 11/15) Des Moines paper notes the dipstick was
missing from the plane at the crash site and was found at the airport.


Not in the reports yet: whether the dipstick was found on the ramp or
taxiway where it might've rolled if someone forgot and left it on a
cowling during a preflight, or if it was in the mechanic shop. Report
says the engine oil was "dangerously low," with only 1-2 quarts found
by the NTSB investigators. Pilot had reported an oil leak shortly
after takeoff.

Also not in the news reports: any indication, guess or wild
assumptions whether one engine had stopped. For that, I salute the
local reporters. Just the facts.