Assertion: combat aircraft | /r/CapableOf | break the sound barrier
Facets:
value: such as tuck
type: MANNER
value: in level flight
type: TEMPORAL
value: by the 1950s
type: TEMPORAL
value: routinely
type: TEMPORAL
Source sentences:
text: By the 1950s, many combat aircraft could routinely break the sound barrier in level flight, although they often suffered from control problems when doing so, such as Mach tuck.