Alas I too suffer from too many years of Griffons either side of my eardrums. Of note shortly after the AEW came into service I took one to Boscombe for various trials, the final one being a noise assessment in the cockpit and Nav/Eng compartment. After orbiting a well known landmark (Arthur's Tower) for some time, we were asked to return to BD at maximum power. Max rpm and water meth engaged was certainly one hell of a noise, we exceeded Vne by xx knots, and on completion the boffin declared that the noise level was above acceptable limits - for a blast furnace! The results were not published!