Last week marked the first joint acceptance flight involving the two flight teams at the company's plant in Marietta.
The joint acceptance flights are expected to reduce total delivery times for the modified C-5s by two to four weeks, according to a company news release.
"Today marks a significant milestone for our C-5 family," Greg Ulmer, Lockheed Martin vice president of the C-5 program,is quoted in the company announcement. "While this may sound simple, this took many hours of coordination and planning from many in the C-5 enterprise. This is just one step of many we are implementing to increase the rate of C-5M deliveries to our warfighters."
Air Force plans to upgrade 52 C-5s to the new Super Galaxy configuration.
Lockheed inducted an aircraft into its C-5 modificaiton line last week, the 18th to receive the upgrade.
Robins Air Force Base is the sustainment site for the Air Force's fleet of C-5s.