Interesting - it wasn't the only other US FAA registered Tristar "STARGAZER" which is N140SC. Here is a list of its flights March > May 2019: https://flightaware.com/live/flight/N140SC/history I have signed up for free basic membership of Flight Aware to get alerts on any future flights of aircraft in the $TMPS Tristar Fleet. Here is the record for $TMPS N703CS - 1 hr 3 min flight - about right for a test or pilot certification. https://flightaware.com/live/flight/N703CS/history