Originally Posted by
roger4
The sonic boom from the Typhoons was heard over Northamptonshire and parts of Oxfordshire, but neither we (near Benson) nor my daughter's family (near Abingdon) heard it. The Dash 8 began its descent from FL250 around Kidlington. It then routed in continual descent to Reading, passing overhead there at FL150, then turned east still descending, and turned north at Heathrow levelling at FL70 in the turn. The aircraft then routed north towards Luton before turning east towards Stansted, all at FL70. All these data come from the replay function on ADSB Exchange.
I assume therefore that the intercept took place north of Oxford, perhaps around Banbury, and the Dash 8 was "guided" around London (broadly following the M25 clockwise) in order to avoid flying over the city center.
Thanks Roger4, I have seen the replay.
First reports on social media regarding a "boom" were at around 12:10 Usually a pretty good time stamp with the "WTF was that bang I just heard" etc. . At that time the 7600 was just about over Banbury. Intercept then needs to lose a lot of speed to join the Dash 8, get its attention, go through the procedures before doing the escort to Stansted. Intercept was probably a fair bit south of Banbury and now at Dash 8 speed.
I know when the Typhoons launched... The guys did good.
