Assertion: spacecraft's mission | /r/HasProperty | a test flight
Facets:
Source sentences:
text: The second mission, a test flight for the Air Force Manned Orbiting Program (MOL), was launched on a Titan IIIC rocket.
text: Modified SR-71 Blackbird ejection seats and full pressure suits were used for the two-man crews on the first four shuttle orbital missions, which were considered test flights, but they were removed for the "operational" missions that followed.