What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) On 03/09/2009, at approximately 12:25, ground operations crew prepared the aircraft for push-back from the gate to the de-icing pad "a". Once the dual boarding bridge (dbb) was retracted, swaa personnel begun pushing the aircraft back. As push back was in progress, approximately twenty to thirty feet, the tug driver started to turn the aircraft to his right. As a result, the left winglet passed slightly under the dual boarding bridge. At the same time, a photo cell sensor in front of the dbb, detected that the aircraft was clear of the gate area. At this point, the dbb, went into the normal park mode and started to descend to a lower level. As a result, the winglet encountered major damage, due to the downward forces of the dbb. Aircraft was then immediately repositioned back to the gate by ground operations crew. As a pre-cautionary measure, airport maintenance personnel shut down the dbb system. Flight crew secured the aircraft, and deplaned 137 passengers. No injuries were reported.
As the FAA filed it
(-23) ON 03/09/2009, AT APPROXIMATELY 12:25, GROUND OPERATIONS CREW PREPARED THE AIRCRAFT FOR PUSH-BACK FROM THE GATE TO THE DE-ICING PAD "A". ONCE THE DUAL BOARDING BRIDGE (DBB) WAS RETRACTED, SWAA PERSONNEL BEGUN PUSHING THE AIRCRAFT BACK. AS PUSH BACK WAS IN PROGRESS, APPROXIMATELY TWENTY TO THIRTY FEET, THE TUG DRIVER STARTED TO TURN THE AIRCRAFT TO HIS RIGHT. AS A RESULT, THE LEFT WINGLET PASSED SLIGHTLY UNDER THE DUAL BOARDING BRIDGE. AT THE SAME TIME, A PHOTO CELL SENSOR IN FRONT OF THE DBB, DETECTED THAT THE AIRCRAFT WAS CLEAR OF THE GATE AREA. AT THIS POINT, THE DBB, WENT INTO THE NORMAL PARK MODE AND STARTED TO DESCEND TO A LOWER LEVEL. AS A RESULT, THE WINGLET ENCOUNTERED MAJOR DAMAGE, DUE TO THE DOWNWARD FORCES OF THE DBB. AIRCRAFT WAS THEN IMMEDIATELY REPOSITIONED BACK TO THE GATE BY GROUND OPERATIONS CREW. AS A PRE-CAUTIONARY MEASURE, AIRPORT MAINTENANCE PERSONNEL SHUT DOWN THE DBB SYSTEM. FLIGHT CREW SECURED THE AIRCRAFT, AND DEPLANED 137 PASSENGERS. NO INJURIES WERE REPORTED.