Adjusted EBITDA decreased $18 million in the Space Systems segment in the first quarter of 2019 compared to the same period of 2018. The decrease from 2018 to 2019 is primarily related to an increase in estimated costs to complete certain satellite build programs, as well as impacts of lower volume in our Palo Alto factory. Adjusted EBITDA was also lower due to a decrease in RCM revenue and the change in product mix. These increases were partially offset by a decrease in selling, general and administrative expense due to headcount reductions as a result of prior year restructuring initiatives.
Imagery Segment Results
Reported | ||||||||||||
Three months ended | ||||||||||||
March 31, | ||||||||||||
2019 | 2018 | |||||||||||
($ millions) | ||||||||||||
Revenue | $ | 200 |
|
$ |
211 |
|||||||
Adjusted EBITDA | $ | 121 |
|
$ |
134 |
|||||||
Adjusted EBITDA Margin | 60.5 | % | 63.5 | % |