Maybe you already heard that two Su-27s Flankers were sold to American company “Pride Aircraft Inc“, acquired from Ukraine. Both are UB variants, demilitarized, 100% overhauled, better to say `zero-time`, and both were registered as civilian jets. So, they were like new from factory, but without weapon systems,no IRST,…etc.
Software , navigation equipment were changed to western technology. All cockpit markings were relabeled in English. The aircraft have full IFR U.S. instrumentation and avionics, but retain every bit of character, pedigree, and performance they had in foreign military service. Marks of the jets are 31 and 32, but civilian licence registers are N131SU and N132SU.
By information we found, they were sold to Pride Aircraft around 2009 from Ukraine. Pride Aircraft Inc had plans to do some high-altitude research, but company Pride Aircraft went bust and project was terminated. Both aircraft are sold, and price was about $5 million per jet. Customer unknown yet. Here are some photos and videos with both Flankers:
First flight of the N131SU video