As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT FLIGHT LEVER 370, NR 1 ENGINED EXPERIENCE A LOUD BANG WITH ITT SPIKING AT 1016 DEGREES WITH AIRFRAME VIBRATION. N1 AND N2 ROSE, ITT THEN FELL TO 450 DEGREES WITH N1 AND N2 DROPPING. SHUT DOWN ENGINE. TROUBLESHOT NR 1 ENGINE FOUND THE LOW PRESSURE COMPRESSOR DAMAGED, HARD TO ROTATE BY HAND. REMOVED NR 1 ENGINE AND INSTALLED A SERVICEABLE LOANER ENGINE IAW RAYTHEON HAWKER 800XP MM AND HONEYWELL TFE 731-5BR LMM CHAPTER 72-02-96. PERFORMED OPERATIONAL, FUNCTIONAL & LEAK CHECKS, ALL CHECKED GOOD.