Dazed767, I think you might mean an L-1011-1 that was built on May 17, 1977. This Lockheed was sold to Eastern as "N336EA" and then eventually was bought by Delta on Sept. 18, 1991 as "N790DL". The Serial No. is 1143. I could not find a listing for "N740DL". Like DC-10 said, there is a "N740DA" but it never has had any other registration before.
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