Narrative:

While approaching the jet bridge in dtw, the marshaller brought us to a stop by crossing his hands. I performed my parking check flow after the engines had been shut down. I then continued with the parking checklist. After the first item on the list, I noticed the aircraft was moving backwards. I alerted the captain and he applied the brakes. We rolled back approximately 10 ft. The aircraft was clear of equipment and ground personnel. There were no injuries and no damage to the aircraft. The aircraft parking brake had not been set and no chocks had been put in place.

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Original NASA ASRS Text

Title: AN A320 STARTS TO ROLL BACK FROM THE GATE AFTER THE CAPT FAILS TO SET THE PARKING BRAKE AFTER ENG SHUTDOWN AT DTW, MI.

Narrative: WHILE APCHING THE JET BRIDGE IN DTW, THE MARSHALLER BROUGHT US TO A STOP BY XING HIS HANDS. I PERFORMED MY PARKING CHK FLOW AFTER THE ENGS HAD BEEN SHUT DOWN. I THEN CONTINUED WITH THE PARKING CHKLIST. AFTER THE FIRST ITEM ON THE LIST, I NOTICED THE ACFT WAS MOVING BACKWARDS. I ALERTED THE CAPT AND HE APPLIED THE BRAKES. WE ROLLED BACK APPROX 10 FT. THE ACFT WAS CLR OF EQUIP AND GND PERSONNEL. THERE WERE NO INJURIES AND NO DAMAGE TO THE ACFT. THE ACFT PARKING BRAKE HAD NOT BEEN SET AND NO CHOCKS HAD BEEN PUT IN PLACE.

Data retrieved from NASA's ASRS site as of July 2007 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.