Assertion: hovercraft | /r/HasProperty | dogged by loose propellers
Facets:
value: in operation
type: LOCATION
Source sentences:
text: After Cockerell's resignation, the hovercraft continued to be plagued by high costs of development and design, and in operation was dogged by technical problems and accidents, including fires, loose propellers, engine failure, gale damage and even a fatal accident at Dover in 1985 which claimed the lives of four passengers.