DC-3.
 
Serving multiple roles through the 20th century, including military, passenger, cargo and even top dressing, the Douglas DC-3 Dakota is a classic lady of the skies. This model was built in Oklahoma in 1943. Photo details: Canon 40D, ISO 250, 1/640th second exposure with a Canon EF 70-200mm IS USM lens @ f-9.

 Image taken January 17th 2009