Narrative:

I was not on the aircraft when damage occurred. This is just my assessment of what happened. Aircraft parked at bwi gate under very windy/gusty conditions. When mechanic gave me chocks in signal I released the brakes. Both hydraulic pumps were off per checklist. The control column was slamming back and forth because of wind conditions, so I turned on the B electric pump to pressurize flight control system. I then exited the aircraft. 15 mins later a flight attendant told me that the aircraft was damaged at the gate. When I arrived at the aircraft the nose was 20 ft from the jetway and was on top of a baggage cart. There was very little weight on the nosewheel (strut fully extended). I believe that the aircraft was tail heavy and when a down force from the gusty wind occurred it lifted the nose from the chocks and weathervaned into cart. Supplemental information from acn 326733: the captain left the aircraft and proceeded to flight operations, and I stood in the cockpit doorway to say goodbye to our deplaning passenger. While standing there I felt the aircraft moving and when I turned and looked into the cockpit, the nose of the aircraft was moving to the right, away from the jetway. I immediately jumped in the left seat and applied the brakes as quickly as possible. The aircraft came to rest next to a baggage cart. After verifying the crew and passenger were ok, maintenance had the stair truck brought to the rear of the aircraft so the remainder of the passenger could deplane. I had one of my flight attendants go to flight operations and summon the captain. The winds were out of the south with gusts up to 40 mph. The nosewheel was chocked and we think that the gust of wind, given the position of the aircraft, pushed the tail enough that it lifted the nosewheel up over the chocks, causing the aircraft to weathervane.

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Original NASA ASRS Text

Title: B737-300 PARKED AT GATE IN GUSTY WIND CONDITIONS WX VANES AWAY FROM JETWAY JUST AS PAX DEPLANE.

Narrative: I WAS NOT ON THE ACFT WHEN DAMAGE OCCURRED. THIS IS JUST MY ASSESSMENT OF WHAT HAPPENED. ACFT PARKED AT BWI GATE UNDER VERY WINDY/GUSTY CONDITIONS. WHEN MECH GAVE ME CHOCKS IN SIGNAL I RELEASED THE BRAKES. BOTH HYD PUMPS WERE OFF PER CHKLIST. THE CTL COLUMN WAS SLAMMING BACK AND FORTH BECAUSE OF WIND CONDITIONS, SO I TURNED ON THE B ELECTRIC PUMP TO PRESSURIZE FLT CTL SYS. I THEN EXITED THE ACFT. 15 MINS LATER A FLT ATTENDANT TOLD ME THAT THE ACFT WAS DAMAGED AT THE GATE. WHEN I ARRIVED AT THE ACFT THE NOSE WAS 20 FT FROM THE JETWAY AND WAS ON TOP OF A BAGGAGE CART. THERE WAS VERY LITTLE WEIGHT ON THE NOSEWHEEL (STRUT FULLY EXTENDED). I BELIEVE THAT THE ACFT WAS TAIL HVY AND WHEN A DOWN FORCE FROM THE GUSTY WIND OCCURRED IT LIFTED THE NOSE FROM THE CHOCKS AND WEATHERVANED INTO CART. SUPPLEMENTAL INFO FROM ACN 326733: THE CAPT LEFT THE ACFT AND PROCEEDED TO FLT OPS, AND I STOOD IN THE COCKPIT DOORWAY TO SAY GOODBYE TO OUR DEPLANING PAX. WHILE STANDING THERE I FELT THE ACFT MOVING AND WHEN I TURNED AND LOOKED INTO THE COCKPIT, THE NOSE OF THE ACFT WAS MOVING TO THE R, AWAY FROM THE JETWAY. I IMMEDIATELY JUMPED IN THE L SEAT AND APPLIED THE BRAKES AS QUICKLY AS POSSIBLE. THE ACFT CAME TO REST NEXT TO A BAGGAGE CART. AFTER VERIFYING THE CREW AND PAX WERE OK, MAINT HAD THE STAIR TRUCK BROUGHT TO THE REAR OF THE ACFT SO THE REMAINDER OF THE PAX COULD DEPLANE. I HAD ONE OF MY FLT ATTENDANTS GO TO FLT OPS AND SUMMON THE CAPT. THE WINDS WERE OUT OF THE S WITH GUSTS UP TO 40 MPH. THE NOSEWHEEL WAS CHOCKED AND WE THINK THAT THE GUST OF WIND, GIVEN THE POS OF THE ACFT, PUSHED THE TAIL ENOUGH THAT IT LIFTED THE NOSEWHEEL UP OVER THE CHOCKS, CAUSING THE ACFT TO WEATHERVANE.

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.