What was found
AROUND 900 FEET, LOUD NOISE HEARD, FOLLOWED WHITE SMOKE OBSERVED IN CABIN BETWEEN ROW 7 AND 9, NO ABNORMAL INDICATIONS SHOWN IN FLT DECK. FACT 14JUN23 16:01 PHL FOUND BLOWN DUCT BETWEEN ROW 7,8,9, REINSTALLED DUCT AND SECURED WITH NEW CLAMP. RAN PACK 1 FOR FIVE MINUTES. NO LEAKS NOTED. OPS CHECK GOOD ACFT OK FOR SERVICE.