As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAKEOFF ROLL, A LOUD BANG OCCURRED AT SPEED OF 80 KNOTS. RETURNED TO BLOCKS. VISUAL INSPECTION OF ALL ENGINE INTAKES, AND EXHAUST PER MM 72-00-00, FOUND NOTHING. CHECKED EXTERIOR OF A/C AND FOUND NOTHING ABNORMAL. AIRCRAFT DEPARTED ON TIME.