What was found
IN FLIGHT, FLT NR 20, TPA TO JFK, F/A'S ADMINISTERED OXYGEN TO PAX FROM POB IN AFT GALLEY. FWD A/C RIGHT POB WOULD NOT FLOW WHEN ATTEMPT WAS MADE TO USE IT, APPEARS TO BE EMPTY. REMOVED AND REPLACED 1 POB IAW MM 35-32-42, BOTTLE SECURED IN FWD BIN.