As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED NO AIR FLOW FROM GALLEY AIR VENT AND LOW FLOW IN AFT AFT LAV AREA. LOW FLOW IN AFT LAV CLEAN OUT STILL LOW FLOW IN AFT GALLEY AIR VENT. SUSPECT CLOGGED LINE BLOCKAGE IN DISTRIBUTION DUCT AREA K PER IPC AND POSSIBLE BLOCKAGE AT ITEM F. SUGGEST FLEET ENGINEERING INVOLVEMENT FOR PAST ISSUES AS MENTIONED ABOVE. CLEANED DEBRIS OUT OF GASPER AND RESTORED AIRFLOW.