Boeing 747-100 N905NA Fact.
An early-model 747-123 version, NASA 905 was the 86th 747 built, rolling ... After serving as a flagship jetliner for American Airlines for several years,
structural changes and upgrades by Boeing in 1976, to prepare it for the NASA 905 was the first SCA. It was obtained from American Airlines in 1974.

Dff by skylineGTRfreak.
txd to aircraft by Riba.