As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) GASPERS IN MAIN CABIN HAVE NO AIR FLOW AT ALL TEMPS AND PRESSURES IN PACK#2 NORMAL, PRESURIZATION NORMAL (NOT OVERWEIGHT, VSI LESS THAN 300 FT/MIN, NO EMERGENCY DECLARED) CABIN AIR SUPPLY DUCTS INSTL (UNDERFLOOR) (FS 409+128 TO 621) REF: P/N X10327-3 TRANSITION FLEX DUCT (TC# 20190408009)