Narrative:

When passengers were deplaning they were complaining that the rear of the cabin was hot. Captain checked temperature and noted it to be 85 degrees. Captain came to aft to check controls and removed the flight attendant's control of temperature gauge. Passengers boarded the aircraft and captain had called maintenance. Captain again came back to aft to check if the temperature was better and noted one side of the air vent was blowing cold air while the other was blowing hot air. Maintenance came on board to address the heating issue. Passengers that boarded were now complaining of the heat. Flight attendant a asked the captain who was on the jet bridge speaking with the gate agent; if we would be deplaning or should we open the aft doors for ventilation. The captain gave permission to open aft doors. Flight attendant a came back and went to the L2 door. Due to the forward doors being open still; the aft doors were disarmed. Flight attendant B (me) watched as flight attendant a cross checked the L2 door; looking to make sure all indicators were clear and it was disarmed and the girt bar indicator was clear and she then opened the L2 door and put the safety strap across. Flight attendant a then came and before I touched anything on the R2 door we both cross checked the door to make sure that all indicators were ok. The vent flap and lock handles were up so the indicators were clear; disarmed (green) and the girt bar indicator was clear. We both checked and then I grasped the assist handle and opened the door. Upon getting the handle up there was a loud hissing and as the manual door assist took over the slide started to deploy. It unfurled all the way out. I put the safety strap across. Flight attendant a went forward to inform the captain that the slide had deployed and I stayed in the back. After the captain was informed; the customer service agent came onto the aircraft and announced that the flight had been canceled and the passengers deplaned.

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Original NASA ASRS Text

Title: ERJ170 Flight Attendant describes an inadvertent slide deployment at the R2 door when the door is opened for aircraft cooling.

Narrative: When passengers were deplaning they were complaining that the rear of the cabin was hot. Captain checked temperature and noted it to be 85 degrees. Captain came to aft to check controls and removed the flight attendant's control of temperature gauge. Passengers boarded the aircraft and Captain had called Maintenance. Captain again came back to aft to check if the temperature was better and noted one side of the air vent was blowing cold air while the other was blowing hot air. Maintenance came on board to address the heating issue. Passengers that boarded were now complaining of the heat. Flight Attendant A asked the Captain who was on the jet bridge speaking with the gate agent; if we would be deplaning or should we open the aft doors for ventilation. The Captain gave permission to open aft doors. Flight Attendant A came back and went to the L2 door. Due to the forward doors being open still; the aft doors were disarmed. Flight Attendant B (me) watched as Flight Attendant A cross checked the L2 door; looking to make sure all indicators were clear and it was disarmed and the girt bar indicator was clear and she then opened the L2 door and put the safety strap across. Flight Attendant A then came and before I touched anything on the R2 door we both cross checked the door to make sure that all indicators were ok. The vent flap and lock handles were up so the indicators were clear; disarmed (green) and the girt bar indicator was clear. We both checked and then I grasped the assist handle and opened the door. Upon getting the handle up there was a loud hissing and as the manual door assist took over the slide started to deploy. It unfurled all the way out. I put the safety strap across. Flight Attendant A went forward to inform the Captain that the slide had deployed and I stayed in the back. After the Captain was informed; the Customer Service Agent came onto the aircraft and announced that the flight had been canceled and the passengers deplaned.

Data retrieved from NASA's ASRS site as of July 2013 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.