Narrative:

Flight on nov/xa/08; ZZZ1-ZZZ2; operated with known deferral of right pack. Upon landing in ZZZ2; I called ZZZ1 maintenance concerning very warm cabin temperatures with many complaints from passenger. My crew and I were going to be taking the same ship out in the morning to ZZZ. I asked maintenance if they could fix the pack overnight due to the discomfort of the passenger. Maintenance said they were unable to fix the problem in ZZZ2 and that contract maintenance was not equipped to handle the issue. On nov/xb/08 we departed ZZZ1 to ZZZ with same ship number; but this time without any complaints of cabin temperature. Upon departure from ZZZ; we received a caution left pack high temperature message on takeoff. My first officer had the controls and I ran the QRH. In the middle of the left pack high temperature abnormal checklist; we received a cool caution message. I finished with the pack high temperature checklist and then ran the cool abnormal checklist. In the middle of that checklist; we received a cabin pressure caution message. I finished the cool abnormal checklist and ran the cabin pressure abnormal checklist. I pushed the ram air button but it did not work; nor did the switch light up. I then pushed the emergency depressurization button but it did not seem to work. I hit the emergency depressurization again and it worked. By this time we were on final approach into ZZZ3. We flew the ILS and landed safely with the cabin unpressurized. Upon arrival at the gate; we called ZZZ1 maintenance and wrote up the problem in the maintenance can. Airline sent their regional maintenance manager to the aircraft and he began to decipher the problem. I believe the problem could have been prevented had ZZZ2 maintenance not dispatched the aircraft with the right pack deferred. The ship was going to be flying for the next few days before arriving back in ZZZ2. I notified maintenance about the passenger complaints and nothing was done to rectify the problem in ZZZ2.

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Original NASA ASRS Text

Title: A CRJ FLIGHT CREW WAS DISPATCHED WITH AN INOPERATIVE RIGHT AIR CONDITIONING PACK; AND EXPERIENCED FAILURE OF THE LEFT PACK ON FINAL APPROACH.

Narrative: FLT ON NOV/XA/08; ZZZ1-ZZZ2; OPERATED WITH KNOWN DEFERRAL OF R PACK. UPON LNDG IN ZZZ2; I CALLED ZZZ1 MAINT CONCERNING VERY WARM CABIN TEMPS WITH MANY COMPLAINTS FROM PAX. MY CREW AND I WERE GOING TO BE TAKING THE SAME SHIP OUT IN THE MORNING TO ZZZ. I ASKED MAINT IF THEY COULD FIX THE PACK OVERNIGHT DUE TO THE DISCOMFORT OF THE PAX. MAINT SAID THEY WERE UNABLE TO FIX THE PROB IN ZZZ2 AND THAT CONTRACT MAINT WAS NOT EQUIPPED TO HANDLE THE ISSUE. ON NOV/XB/08 WE DEPARTED ZZZ1 TO ZZZ WITH SAME SHIP NUMBER; BUT THIS TIME WITHOUT ANY COMPLAINTS OF CABIN TEMP. UPON DEP FROM ZZZ; WE RECEIVED A CAUTION L PACK HIGH TEMP MESSAGE ON TKOF. MY FO HAD THE CTLS AND I RAN THE QRH. IN THE MIDDLE OF THE L PACK HIGH TEMP ABNORMAL CHKLIST; WE RECEIVED A COOL CAUTION MESSAGE. I FINISHED WITH THE PACK HIGH TEMP CHKLIST AND THEN RAN THE COOL ABNORMAL CHKLIST. IN THE MIDDLE OF THAT CHKLIST; WE RECEIVED A CABIN PRESSURE CAUTION MESSAGE. I FINISHED THE COOL ABNORMAL CHKLIST AND RAN THE CABIN PRESSURE ABNORMAL CHKLIST. I PUSHED THE RAM AIR BUTTON BUT IT DID NOT WORK; NOR DID THE SWITCH LIGHT UP. I THEN PUSHED THE EMER DEPRESSURIZATION BUTTON BUT IT DID NOT SEEM TO WORK. I HIT THE EMER DEPRESSURIZATION AGAIN AND IT WORKED. BY THIS TIME WE WERE ON FINAL APCH INTO ZZZ3. WE FLEW THE ILS AND LANDED SAFELY WITH THE CABIN UNPRESSURIZED. UPON ARR AT THE GATE; WE CALLED ZZZ1 MAINT AND WROTE UP THE PROB IN THE MAINT CAN. AIRLINE SENT THEIR REGIONAL MAINT MGR TO THE ACFT AND HE BEGAN TO DECIPHER THE PROB. I BELIEVE THE PROB COULD HAVE BEEN PREVENTED HAD ZZZ2 MAINT NOT DISPATCHED THE ACFT WITH THE R PACK DEFERRED. THE SHIP WAS GOING TO BE FLYING FOR THE NEXT FEW DAYS BEFORE ARRIVING BACK IN ZZZ2. I NOTIFIED MAINT ABOUT THE PAX COMPLAINTS AND NOTHING WAS DONE TO RECTIFY THE PROB IN ZZZ2.

Data retrieved from NASA's ASRS site as of May 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.