October 23rd, 2002 The late Dan Lavigna's Mk58A N4103Y (ex J-4103, and wearing the original Swiss Air Force colours and markings that it left Meiringen with in December 1994) shown parked alongside the Sino Swearingen Aircraft Corporation's new SJ30-2 Business Jet at the company's facility at San Antonio Airport, Texas. J-4103 was flown by ex-RAF pilot Johnny Baines, as a chase plane during the twinjet's high-speed envelope expansion tests. The aircraft reached a speed of Mach 0.83 (558mph) in level flight. Photo © Sino Swearingen Aircraft Manufacturer www.sj30jet.com