Very sad news indeed.
A good friend of mine was invited to attend Captain Brown's 97th birthday at the Bucks Club in London, just a few weeks ago, where he recounted many anecdotes and a lively discussion of flying the Me 262. 100 pilots were invited to attend the celebration.
I was also priviliged to meet Captain Brown at a lecture he gave at the Brooklands Aviation Museum, many years ago.
After the lecture, he very kindly signed a copy of his book " Wings of the Liftwaffe" for me.
The account of his lifetimes work left a profound impression , and at the conclusion there was a standing ovation, by the full to capacity audience.
We will not see an aviator of his like again.