AN MD80 CREW; WHILE TAXIING TO THE GATE AT DEN; EXPERIENCED SMOKE IN THE CABIN.

Narrative

DURING TAXI IN AFTER APU START AND JUST PRIOR TO TURNING IN TO THE GATE; FLT ATTENDANT CALLED WITH SMOKE IN CABIN. I ASKED IF THERE WAS A FIRE OR EXCESSIVE HEAT AND SHE SAID NO. I TURNED OFF BOTH PACKS; APU AIR; AND RECIRCULATION FAN. SMOKE WAS NOT GETTING ANY WORSE. I HAD FO OPEN COCKPIT DOOR TO VISUALLY CHK AMOUNT OF SMOKE. WE COULD SEE ALL THE WAY TO THE BACK WITH SMOKE IN CABIN. DURING THIS; I CONTINUED TO APCH GATE WITH WING WALKERS BUT NO GUIDE MAN. AGENT WAS ON BRIDGE. AGENT OPENED FRONT DOOR AND I HAD GND CREW LOWER AFT STAIRS. AFTER L ENG SHUT DOWN; I HAD FLT ATTENDANT DISARM AFT GALLEY DOOR AND OPEN IT TO HELP CLR SMOKE. OUTBOUND CAPT ON JETBRIDGE WENT ON RAMP AND UP AFT STAIRS TO ASSIST IF NEEDED. A COUPLE OF PAX MAY HAVE EXITED DOWN AFT STAIRS AND WERE ESCORTED UP JETBRIDGE BY GND PERSONNEL. THE REST EXITED NORMALLY THROUGH FRONT ENTRY DOOR. NO INJURIES OR COMPLAINTS FROM PAX TO ME WHILE EXITING. MAINT FOUND HYD FLUID IN ACFT SYS FROM HYD LEAK FROM REVERSER. FROM TIME OF FIRST CALL FROM FLT ATTENDANT TO ARR AT GATE APPROX 1 MIN. SUPPLEMENTAL INFO FROM ACN 552713: SINCE WE WERE ALREADY NEAR THE GATE; THE CAPT RIGHTLY IN MY OPINION; DECIDED TO HEAD EXPEDITIOUSLY FOR THE GATE. AS THE SMOKE HAD THICKENED; SEVERAL PAX DEPLANED VIA THE AFT DOOR.