As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN APU BLEED WAS TURNED ON A LOUD BANG WAS HEARD AND SMOKE BEGAN ENTERING THE CABIN / [01] C/W CONDITIONAL INSPECTION PER AMM 05-51-56-200-801; FOUND APU BLEED AIR DUCT CLAMP INBD OF AFT PRESSUE BULKHEAD BROKEN. R & R CLAMP PER SIP. LEAK CK GOOD