Assertion: space shuttle's engine | /r/CapableOf | enter the flight inventory
Facets:
Source sentences:
text: A total of 46 reusable RS-25 engines, each costing around US$40 million, were flown during the Space Shuttle program, with each new or overhauled engine entering the flight inventory requiring flight qualification on one of the test stands at Stennis Space Center prior to flight.