The decibel levels certainly increased as this 1966 built Johnson & Johnson owned Jetstar taxied into the General Aviation area at Heathrow back in 1975. Luckily I caught the underside strobe on. It ended its days as N33SJ, being broken up at Murrieta in 2005.Scanned from a slide. Fuselage stored, in United States of America titles/markings, at KCNO 2009