 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of parked DC10 noticed it rolling back from the gate and stopped it with the aircraft brakes. Investigation found that the marshaller had not chocked the wheels before the captain released the parking brake.
| Attributes | |
| ACN | 421926 |
| Time | |
| Date | 199812 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : scl |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-10 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 1300 flight time type : 1000 |
| ASRS Report | 421926 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 5000 |
| ASRS Report | 421920 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
We were marshalled in to gate by people who appeared to know what they were doing. As we came to a stop the person directing us gave a come-ahead signal, the man behind him gave a stop signal so the captain stopped. At this point the people on the ground seemed satisfied with the aircraft position. At this point I completed my parking flow. A few moments later the captain said he had been given the chocks in signal and called for the 'parking check' which we completed. As I was packing my brain bag, I felt the aircraft moving. I looked out and we were rolling backward. No one on the ground seemed too concerned. I announced 'we're rolling backward' and the captain put on the brakes. We had moved aft about 20 ft. It was a very subtle movement. It could have been deadly. We talked to the station people. The ones that parked us were not qualified, there were no chocks available. The 'chocked' signal meant they were going to look for some. In the end they accepted all responsibility for the instance.
Original NASA ASRS Text
Title: FLC OF PARKED DC10 NOTICED IT ROLLING BACK FROM THE GATE AND STOPPED IT WITH THE ACFT BRAKES. INVESTIGATION FOUND THAT THE MARSHALLER HAD NOT CHOCKED THE WHEELS BEFORE THE CAPT RELEASED THE PARKING BRAKE.
Narrative: WE WERE MARSHALLED IN TO GATE BY PEOPLE WHO APPEARED TO KNOW WHAT THEY WERE DOING. AS WE CAME TO A STOP THE PERSON DIRECTING US GAVE A COME-AHEAD SIGNAL, THE MAN BEHIND HIM GAVE A STOP SIGNAL SO THE CAPT STOPPED. AT THIS POINT THE PEOPLE ON THE GND SEEMED SATISFIED WITH THE ACFT POS. AT THIS POINT I COMPLETED MY PARKING FLOW. A FEW MOMENTS LATER THE CAPT SAID HE HAD BEEN GIVEN THE CHOCKS IN SIGNAL AND CALLED FOR THE 'PARKING CHK' WHICH WE COMPLETED. AS I WAS PACKING MY BRAIN BAG, I FELT THE ACFT MOVING. I LOOKED OUT AND WE WERE ROLLING BACKWARD. NO ONE ON THE GND SEEMED TOO CONCERNED. I ANNOUNCED 'WE'RE ROLLING BACKWARD' AND THE CAPT PUT ON THE BRAKES. WE HAD MOVED AFT ABOUT 20 FT. IT WAS A VERY SUBTLE MOVEMENT. IT COULD HAVE BEEN DEADLY. WE TALKED TO THE STATION PEOPLE. THE ONES THAT PARKED US WERE NOT QUALIFIED, THERE WERE NO CHOCKS AVAILABLE. THE 'CHOCKED' SIGNAL MEANT THEY WERE GOING TO LOOK FOR SOME. IN THE END THEY ACCEPTED ALL RESPONSIBILITY FOR THE INSTANCE.
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.