I want to know the answer to the following question:
On what day did airborne radar help intercept and destroy enemy aircraft for the first time?
All the background I'm provided with is that "(Air Intercept radar operator) of the Fighter Interception Unit became the first pilot and crew to intercept and destroy an enemy aircraft using onboard radar to guide them to a visual interception, when their AI night fighter brought down a Do 17 off Sussex.". Is that enough to answer the question?
Answer: no