This should put an end to the argument
The History of John Travolta's Boeing 707-138B
Manufacture Serial Number is 18740
First Flight September 1, 1964
Deliver to Qantas Airlines September 10, 1964
Only in service for four years, put in storage on November 1, 1968
Purchased by Regency Income and leased to Braniff International on June 24, 1969
Purchased by entertainer Frank Sinatra on February 24, 1972
Purchased by the Boeing Commercial Airplane Co. in 1975
Purchased by the Atlas Air Systems in 1975
Purchased by Kirk Kerkorian on November 1, 1975
Purchased by the Tracinda Corporation March 28, 1977
Landing gear collapsed on March 28, 1977
Purchased by TAG International September 26, 1977
Leased to Sheikh Akram on September 26, 1977
Place in storage at Newark on August 25, 1981
Ferried to Le Bourget and place in storage in August 1983
Reentered service in December 1983
Purchased by Trans Oceanic Aviation in November 1987
New VIP interior installed while out of service 1988
******Modified with hush kits which converted it to a 707-138B(Q) in 1989********
Returned to service in July 1990
Purchased by Aviation Methods in 1995
Ferried to Istanbul and placed in storage on October 29, 1995
Offered for sale with a low TAT of 27,682hrs in September 1996
Purchased by John Travolta on May 20, 1998
http://www.707sim.com/jt3.html