What the Black Buck runway attack achieved

Did Britain bomb the Falklands runway from Ascension Island, and what effect did it have?

A Vulcan raid damaged the runway and discouraged jet operations, although C-130 flights continued and the raid's exact material effect remains debated.

The Vulcan attack did not completely close the runway. It helped prevent the use of larger jet aircraft, while nighttime Hercules flights continued; those flights could also reveal useful intelligence to the British. The answer therefore treats Black Buck as consequential without claiming it solved the air problem by itself.