It's an older one. 1977. Ownership hidden behind a blind trust. 15,000 feet? Hmm… past owenr was RUSSCOR FINANCIAL INC. Of course anon has no idea if, in 2006, they held onto it and registered it under the blind trust or if they sold it and the new owner placed it in the trust. They do hidde their Flight Plans on Flight Aware though.
N888ET - WELLS FARGO TRUST CO NA TRUSTEE (SALT LAKE CITY UT)
This aircraft (N888ET) is not available for public tracking per request from the owner/operator.
https://flightaware.com/live/flight/N888ET
N888ET Aircraft Registration
Aircraft Summary
Summary 1977 BEECH 200
Fixed wing multi engine
(11 seats / 2 engines)
Owner WELLS FARGO TRUST CO NA TRUSTEE
SALT LAKE CITY , UT, US
08-May-2018 WELLS FARGO TRUST CO NA TRUSTEE SALT LAKE CITY UT
01-Aug-2009 WELLS FARGO BANK NORTHWEST NA TRUSTEE SALT LAKE CITY UT
18-Aug-2006 REGISTRATION PENDING SCOTTSDALE AZ
02-Jun-2006RUSSCOR FINANCIAL INCSCOTTSDALE AZ
https://flightaware.com/resources/registration/N888ET