Narrative:

After an uneventful flight and landing; we taxied from runway 16R to gate in smf. The marshaller guided us in to a stop. I set the parking brake and checked the triple gauge for brake pressure; which was normal. I then told the first officer to shut down the #2 engine. I released the seatbelt sign switch and then proceeded to put my charts away in my flight bag. At that point; I noticed from the corner of my eye that the jetway appeared to move a greater-than-normal distance. I realized immediately that it was not the jetway but the aircraft. At that precise time; a ramp person started banging on the side of the aircraft. I immediately pushed on the brake pedals which brought the airplane to an abrupt stop. I looked at the brake pressure gauge and noticed that with the pedals depressed; brake pressure was indicating. I also saw the brake accumulator go from green-band towards zero and then back up. I reset the parking brake handle and noticed that we had zero pressure indicating. I told my first officer to pull out the flight manual to see if there was a procedure while I was holding the brake pedals. At that time we also started the APU so that we could shut down the #1 engine. Once the APU was on-line and the #1 engine was shut down; I informed ramp to chock the wheels. This was accomplished straight-away. I also asked if they could see any kind of damage outside as well as the condition of personnel around the aircraft; to which they responded that we apparently made contact with the #1 engine and the jetway. I then spoke to the purser to see if anyone on board was injured. She told me that to her knowledge; no one seemed injured; just stunned with the abrupt stop. I made a PA to the passenger to inform them that we had a brake malfunction and that the aircraft was secure for deplaning. Once our parking checklist was completed; I called maintenance and told him what happened. After that I spoke to the purser again who was speaking with a middle-aged woman in the galley of first class who apparently received some injuries during the abrupt stop. She told me that she had a pre-existing back injury and that she needed medical attention. I asked if she was standing or sitting during all this; and she told me she was seated with her seatbelt fastened. I spoke with a customer service representative to see if we had paramedics coming; which did happen. As we finally deplaned the aircraft; she was being treated in the boarding area. She seemed more injured in the boarding area than she did when I was talking to her in the airplane galley with the purser. I then made a phone call to the duty manager for further follow-up.

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Original NASA ASRS Text

Title: AN A320 EXPERIENCED A PARKING BRAKE MALFUNCTION AND ROLLED AFTER PARKING AT THE GATE IN SMF; CONTACTING THE JETWAY WITH #1 ENG AND INJURING A PAX.

Narrative: AFTER AN UNEVENTFUL FLT AND LNDG; WE TAXIED FROM RWY 16R TO GATE IN SMF. THE MARSHALLER GUIDED US IN TO A STOP. I SET THE PARKING BRAKE AND CHKED THE TRIPLE GAUGE FOR BRAKE PRESSURE; WHICH WAS NORMAL. I THEN TOLD THE FO TO SHUT DOWN THE #2 ENG. I RELEASED THE SEATBELT SIGN SWITCH AND THEN PROCEEDED TO PUT MY CHARTS AWAY IN MY FLT BAG. AT THAT POINT; I NOTICED FROM THE CORNER OF MY EYE THAT THE JETWAY APPEARED TO MOVE A GREATER-THAN-NORMAL DISTANCE. I REALIZED IMMEDIATELY THAT IT WAS NOT THE JETWAY BUT THE ACFT. AT THAT PRECISE TIME; A RAMP PERSON STARTED BANGING ON THE SIDE OF THE ACFT. I IMMEDIATELY PUSHED ON THE BRAKE PEDALS WHICH BROUGHT THE AIRPLANE TO AN ABRUPT STOP. I LOOKED AT THE BRAKE PRESSURE GAUGE AND NOTICED THAT WITH THE PEDALS DEPRESSED; BRAKE PRESSURE WAS INDICATING. I ALSO SAW THE BRAKE ACCUMULATOR GO FROM GREEN-BAND TOWARDS ZERO AND THEN BACK UP. I RESET THE PARKING BRAKE HANDLE AND NOTICED THAT WE HAD ZERO PRESSURE INDICATING. I TOLD MY FO TO PULL OUT THE FLT MANUAL TO SEE IF THERE WAS A PROC WHILE I WAS HOLDING THE BRAKE PEDALS. AT THAT TIME WE ALSO STARTED THE APU SO THAT WE COULD SHUT DOWN THE #1 ENG. ONCE THE APU WAS ON-LINE AND THE #1 ENG WAS SHUT DOWN; I INFORMED RAMP TO CHOCK THE WHEELS. THIS WAS ACCOMPLISHED STRAIGHT-AWAY. I ALSO ASKED IF THEY COULD SEE ANY KIND OF DAMAGE OUTSIDE AS WELL AS THE CONDITION OF PERSONNEL AROUND THE ACFT; TO WHICH THEY RESPONDED THAT WE APPARENTLY MADE CONTACT WITH THE #1 ENG AND THE JETWAY. I THEN SPOKE TO THE PURSER TO SEE IF ANYONE ON BOARD WAS INJURED. SHE TOLD ME THAT TO HER KNOWLEDGE; NO ONE SEEMED INJURED; JUST STUNNED WITH THE ABRUPT STOP. I MADE A PA TO THE PAX TO INFORM THEM THAT WE HAD A BRAKE MALFUNCTION AND THAT THE ACFT WAS SECURE FOR DEPLANING. ONCE OUR PARKING CHKLIST WAS COMPLETED; I CALLED MAINT AND TOLD HIM WHAT HAPPENED. AFTER THAT I SPOKE TO THE PURSER AGAIN WHO WAS SPEAKING WITH A MIDDLE-AGED WOMAN IN THE GALLEY OF FIRST CLASS WHO APPARENTLY RECEIVED SOME INJURIES DURING THE ABRUPT STOP. SHE TOLD ME THAT SHE HAD A PRE-EXISTING BACK INJURY AND THAT SHE NEEDED MEDICAL ATTN. I ASKED IF SHE WAS STANDING OR SITTING DURING ALL THIS; AND SHE TOLD ME SHE WAS SEATED WITH HER SEATBELT FASTENED. I SPOKE WITH A CUSTOMER SVC REPRESENTATIVE TO SEE IF WE HAD PARAMEDICS COMING; WHICH DID HAPPEN. AS WE FINALLY DEPLANED THE ACFT; SHE WAS BEING TREATED IN THE BOARDING AREA. SHE SEEMED MORE INJURED IN THE BOARDING AREA THAN SHE DID WHEN I WAS TALKING TO HER IN THE AIRPLANE GALLEY WITH THE PURSER. I THEN MADE A PHONE CALL TO THE DUTY MGR FOR FURTHER FOLLOW-UP.

Data retrieved from NASA's ASRS site as of January 2009 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.