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B777-200. Aircraft had the parking brakes released for maintenance troubleshooting. The pushback crew removed the aircraft wheel chocks, the aircraft rolled, and the entry door contacted the jetway bridge.
| Attributes | |
| ACN | 561334 |
| Time | |
| Date | 200209 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : jfk.airport |
| State Reference | NY |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B777 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 561334 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| ASRS Report | 561333 |
| Events | |
| Anomaly | aircraft equipment problem : less severe conflict : ground critical ground encounters other non adherence : company policies non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure |
| Supplementary | |
| Problem Areas | Aircraft Company Flight Crew Human Performance Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Maintenance troubleshooting autobrake system which requires brakes to be released. Chocks in place before brakes released. Maintenance working on problem and the push-out crew removed chocks to hook the tug. The airplane then started to move. The airplane was chocked and the brakes were released as maintenance was doing their checks. The push-out crew came along and removed the chocks and rolled, unknown to me, and was stopped by the forward entry door. No contact was made by the ground crew and they did not look at the brake light on the nose gear to see if the brakes were parked. Supplemental information from acn 561333: the ground crew removed the chocks without notifying the cockpit or maintenance. The aircraft rolled and was stopped when it contacted the jet bridge.
Original NASA ASRS Text
Title: B777-200. ACFT HAD THE PARKING BRAKES RELEASED FOR MAINT TROUBLESHOOTING. THE PUSHBACK CREW REMOVED THE ACFT WHEEL CHOCKS, THE ACFT ROLLED, AND THE ENTRY DOOR CONTACTED THE JETWAY BRIDGE.
Narrative: MAINT TROUBLESHOOTING AUTOBRAKE SYS WHICH REQUIRES BRAKES TO BE RELEASED. CHOCKS IN PLACE BEFORE BRAKES RELEASED. MAINT WORKING ON PROB AND THE PUSH-OUT CREW REMOVED CHOCKS TO HOOK THE TUG. THE AIRPLANE THEN STARTED TO MOVE. THE AIRPLANE WAS CHOCKED AND THE BRAKES WERE RELEASED AS MAINT WAS DOING THEIR CHKS. THE PUSH-OUT CREW CAME ALONG AND REMOVED THE CHOCKS AND ROLLED, UNKNOWN TO ME, AND WAS STOPPED BY THE FORWARD ENTRY DOOR. NO CONTACT WAS MADE BY THE GND CREW AND THEY DID NOT LOOK AT THE BRAKE LIGHT ON THE NOSE GEAR TO SEE IF THE BRAKES WERE PARKED. SUPPLEMENTAL INFO FROM ACN 561333: THE GND CREW REMOVED THE CHOCKS WITHOUT NOTIFYING THE COCKPIT OR MAINT. THE ACFT ROLLED AND WAS STOPPED WHEN IT CONTACTED THE JET BRIDGE.
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.