The Passenger conversion was designed in the 1950's. The company was On Mark, they sold a few different versions, basically speaking, unpressurized and pressurized. there were several 'improvements' that On Mark performed along with the modifications.
4 years ago
"The Passenger conversion was designed in the 1950's. The company was On Mark..."
...and the machine guns were optional extras?
3 years ago
According to http://napoleon130.tripod.com/id601.html, this is not On Mark Engineering conversion, but the Rock Island Monarch 26. It's serial number is clearly stated on list and even claimed that conversion took time in 1987.
1 year ago
One of the longest service warplanes the douglas a26 invader world war two to vietnam war first the a26 later changed to b26 later a26k invader