The same year one of their B747SP's suffered major structural damage after stalling at FL410 and descended out of control to below 10,000 before conrol was regained. Significant portions of the horizontal stabilizer (left and right) were shed and one of the body gear was forced open as well as both wings being bent 2" up. This all happened due to trying to maintain FL410 on three engines.
Recall speaking to the 747SP crew at CYQT in 2005 when its private owners jumped across the border to avoid US grounding / seizure. Apparently it went supersonic in its dive with China Airlines.
Despite repairs the a/c 'never flew straight again'.
In its last guise it was labelled 'Global Peace Ambassador' for some US religious sect. Last I heard, it was flown (VFR!) from Canada to Mexico for more repairs.
Anyone know if it is still out there???