Near 11:30 this morning, I heard a loud thump that I guessed was a sonic boom. I went to flightaware.com and found an F15 that had just briefly gone over 1,100 mph / 957 kts at 40,000 ft.
Taking off and landing from St Louis… McDonnell Douglas the F15 maker and an Air National Guard base are both located there. Test flight of some sort would be my guess. Flight history for this MACRD56 thing shows other occasions of high airspeed and unusually erratic flight paths.
And now I am wondering… would that speed and altitude be likely to cause a sonic boom or not?