As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER INITIATING DESCENT HEARD A LOUD POP AROUND THE GALLEY AND BRIEFLY SMELLED AN ACRID SMELL. PAX SAW A BRIEF PUFF OF WHITE SMOKE AROUND THE GALLEY FLOOR. NO OTHER ABNORMALTIES IN FLIGHT. AFTER LANDING THERE WAS A SMELL OF BURNING RUBBER IN THE CABIN. REMOVED ACM. INSTALLED O/H UNIT. OPS CHECK GOOD. NO DEFECTS NOTED AT THIS TIME. ALL WORK PERFORMED IAW CE750 MM CHAPTER 21-51-00.