The contract modification also provides two additional options that if exercised, would bring the potential contract amount for all six months to $56 million.
This modification supports the flyout of the Space Shuttle Program and brings the total potential value of the contract to $2.29 billion. The original contract began on Jan. 1, 2002.
The majority of the work will take place at Pratt & Whitney Rocketdyne's headquarters in Canoga Park.
Three main engines and two solid rocket boosters provide the thrust to launch the space shuttle. At 14-feet long and seven-and-a-half feet in diameter at the nozzle exit, the liquid propellant main engines have a combined thrust of more than 1.2 million pounds.