Re-registered from N8207U to honour the airline's founder, Joseph Ciavardone. Ordered by Pan American-Grace Airways (PANAGRA) as N8275H, but leased to Pan American from May 1960 to May 1964 when returned to PANAGRA. After PANAGRA merged with Braniff in February 1967 it was sold to United Airlines as N8207U and served until sold in September 1976. After cargo conversion it was acquired by Conner Airlines who leased it to Concord Intl. in August 1977. It was returned to Conner in January 1981 and scrapped at MIA in December 1983. (Thanks to www.airliners-airlines.de/ for much of the above.).