Assertion: airbus's aircraft | /r/HasAspect | wind shear detection systems
Facets:
value: on board
type: LOCATION
value: by 1993
type: TEMPORAL
Source sentences:
text: As the result of the accidents due to wind shear and other weather disturbances, most notably the 1985 crash of Delta Air Lines Flight 191, the U.S. Federal Aviation Administration mandated that all commercial aircraft have on-board wind shear detection systems by 1993.