CAPT OF B747-400 REPORTS PAX REVOLT AT GATE DUE TO MALFUNCTIONING AND DEFERRED A/C SYSTEM AND EXCESSIVE HEAT. CITES LONG DEFERRED MAINT AND LACK OF COOPERATION BY PAX SERVICE PERSONNEL AS EXACERBATERS OF AN ALREADY BAD SITUATION.

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MECHS IN COCKPIT UPON ARR TO PLANE; DEFERRED NO AIRFLOW IN CABIN ROW 40-62. 2 BATTERY CHARGERS NOT WORKING; 2 BATTERIES LOW. GND STAFF WAS ACCUSED OF RUNNING DOWN BATTERIES. APU AIR TURNED OFF TO WORK ON APU BATTERY AND CHARGER. TEMP IN CABIN OVER 100 DEGS. DEPLANE PEOPLE; GOT MR X OF FLT OPS MGMNT TO HELP ON MANY ISSUES TODAY. HE DID THE USUAL WONDERFUL JOB HE ALWAYS DOES; HIGH END CAPABILITY PERSON. REPLACE BATTERY AND CHARGER; RELOAD PEOPLE INTO PLANE AFTER TRYING TO COOL CABIN USING SEVERAL TECHNIQUES DUE TO WKS OLD DEFERRED NO COOLING AIRFLOW IN ROWS 40-62; TOOK TIME TO COOL PLANE BELOW 95 DEGS F. FINALLY LOADED PEOPLE AT 86 DEGS F CABIN TEMP IN REAR; RELOAD BACK OF CABIN LAST; DOOR CLOSED; WAITING FOR MRM. CTR DUCT OVERHEAT NOW ON. CHKLIST REQUIRES AIR CONDITIONING BACK OFF. TRIED TO GET CABIN DOOR OPEN. STATION FAILED TO OPEN DOOR. CALL MR X AGAIN TO GET DOOR OPEN SINCE CUSTOMERS OUT OF SEATS YELLING AT FLT ATTENDANTS TO GET OFF ACFT DUE TO HEAT. CANNOT GET ANYBODY TO OPEN DOOR. MAINT SAYS PLANE IS FIXED WITH RESET; BUT NOT; STILL WORKING ON DUCT CLAMPS THAT ARE LOOSE IN BELLY OF ACFT. THE PLANE IS NOT FIXED; BUT THE DOOR AGAIN CLOSED IN HEAT. NO MRM. CUSTOMERS NOW MAKE A FULL PUSH FORWARD TO THE ENTRY DOOR WANTING OFF ACFT. FLT ATTENDANTS UNDER SERIOUS PRESSURE FROM PAX. MR X GETS DOOR OPEN AGAIN AS STATION KEEPS SAYING THE PLANE IS FIXED WHEN IT IS NOT FIXED AS DOORS IN BELLY STILL OPEN AND CLAMPS ON DUCTS BEING FIXED; HAD TO DEMAND ENTRY DOOR BE OPENED AS EMER HEAT CONDITIONS ONBOARD AND PAX OUT OF SEATS YELLING AT CREW AND PUSHING AGAINST ENTRY DOOR. FLT ATTENDANTS WANT OFF ACFT AS DUTY TIME NOW EXCEEDED. SEVERAL FLT ATTENDANTS GOT OFF OUT OF DUTY TIME BUT OTHERS INDICATED A DESIRE TO LEAVE AND THE DOOR WAS SHUT AS THEY WERE RETRIEVING BAGGAGE AFTER TELLING STATION OPS PEOPLE AT THE ENTRY DOOR THEY WERE LEAVING. THE DOOR WAS SLAMMED SHUT ANYWAY. PAX PUSHING AGAINST FLT ATTENDANTS WANTING OFF. HEAT BUILDING WELL ABOVE 100 DEGS F. FLT CREW NOW EXHAUSTED FROM COCKPIT HEAT. NO MRM. STILL WORKING ON DUCT OVERHEAT IN BELLY. MR X GETS DOOR OPEN. PAX LEAVING ACFT FOR A SECOND TIME UNDER GREAT STRESS OF HEAT. FLT CREW NOW OUT OF DUTY TIME; HIGHLY STRESSED AND OVERHEATED. FLT ATTENDANTS OUT OF DUTY TIME AND VERY STRESSED. PAX YELLING AT CREW INCLUDING ME. TIME TO GET OUT FOR SAFETY FROM HEAT AND POSSIBLE PAX RIOT. FLT CANCELED. ANNOUNCEMENTS TO PAX FOR FLT CANCELLATION BLAMED ON CREW WALKING OFF; BUT THE PLANE WAS STILL NOT FIXED. BELLY PANELS OPEN AND 100+ DEG HEAT IN CABIN AND COCKPIT (GAUGES STOP AT 99). MY PERSONAL GAUGE WAS 110 DEGS IN COCKPIT SEAT.