Narrative:

At push there was confusion between the ramp agent and me. I released the parking brake before they were hooked up to the airplane. The airplane started rolling backwards and I applied the toe brakes. The system was not pressurized so the brakes did not work. I quickly applied the parking/emergency brake and the airplane stopped abruptly. The flight attendants stated the were thrown backward but did not fall down and were not injured.[this was caused by ] miscommunication between ramp and flight deck [I suggest verifying] communications with ramp

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Original NASA ASRS Text

Title: EMB-175 Captain reported miscommunication with ground crew led to the aircraft rolling backwards before control was regained.

Narrative: At push there was confusion between the ramp agent and me. I released the parking brake before they were hooked up to the airplane. The airplane started rolling backwards and I applied the toe brakes. The system was not pressurized so the brakes did not work. I quickly applied the parking/emergency brake and the airplane stopped abruptly. The flight attendants stated the were thrown backward but did not fall down and were not injured.[This was caused by ] miscommunication between ramp and flight deck [I suggest verifying] communications with ramp

Data retrieved from NASA's ASRS site 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.