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1 - The Black Vault

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Page 1 of 1<br />

SEC(AS)2A1A<br />

From: SEC(AS)1A1<br />

Sent: 01 October 1999 11:32<br />

To: SEC(AS)2A1A<br />

Subject: Sonic Booooooom<br />

Importance: High<br />

D/Sec(AS)/56/1<br />

We spoke about the alleged sonic boom over Sheffield on 24 March 1997. A nice little<br />

paragraph follows:<br />

non the mattter of the all edged sonic boom on 24 March 1997, you are absolutely<br />

correct that military aircraft may only fly at supersonic speeds over the sea and to fly<br />

supersonic overland is indeed in breach of flying regulations. We take reports of sonic<br />

booms overland very seriously indeed and you will be reassured to team that the RAF<br />

Police did investigate the incident. <strong>The</strong>ir investigation found that no RAF or NATO<br />

aircraft were operating in the area at the time and that civil aircraft in the area were<br />

travelling too slow to have generated a sonic boom."<br />

Howz that? If you want to refer any further questions Dr Clarke may have on the matter<br />

to me (either by phone or by post), please .._~ c ..( ..<br />

Any probs, give me a ring.<br />

~<br />

· ·~ . '-· .. ··<br />

01/10/99

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