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Air carrier widebody transport rolled forward after brakes were released. Flight crew had received a chocks in signal before releasing the brakes.
| Attributes | |
| ACN | 159185 |
| Time | |
| Date | 199010 |
| Day | Sun |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : pmk |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 4 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 20 flight time total : 11000 |
| ASRS Report | 159185 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 8000 |
| ASRS Report | 159175 |
| Events | |
| Anomaly | non adherence : published procedure other anomaly |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Airport |
| Air Traffic Incident | other |
Narrative:
After parking at clark AFB, marshaller gave chocks in signal with lighted wands. I released the brakes and started doing the parking checklist with the other 2 crew members. At some point I glanced out the window and saw that the aircraft was rolling forward. 2 ground men running toward the aircraft with their direction wands crossed (stop) stopped the aircraft and reset the parking brake. The aircraft rolled about 50' forward before was stopped. New procedure just adopted by company is that brakes are not to be released until verbal confirmation of chocks installed received on intercom from ground man.
Original NASA ASRS Text
Title: ACR WDB ROLLED FORWARD AFTER BRAKES WERE RELEASED. FLT CREW HAD RECEIVED A CHOCKS IN SIGNAL BEFORE RELEASING THE BRAKES.
Narrative: AFTER PARKING AT CLARK AFB, MARSHALLER GAVE CHOCKS IN SIGNAL WITH LIGHTED WANDS. I RELEASED THE BRAKES AND STARTED DOING THE PARKING CHKLIST WITH THE OTHER 2 CREW MEMBERS. AT SOME POINT I GLANCED OUT THE WINDOW AND SAW THAT THE ACFT WAS ROLLING FORWARD. 2 GND MEN RUNNING TOWARD THE ACFT WITH THEIR DIRECTION WANDS CROSSED (STOP) STOPPED THE ACFT AND RESET THE PARKING BRAKE. THE ACFT ROLLED ABOUT 50' FORWARD BEFORE WAS STOPPED. NEW PROC JUST ADOPTED BY COMPANY IS THAT BRAKES ARE NOT TO BE RELEASED UNTIL VERBAL CONFIRMATION OF CHOCKS INSTALLED RECEIVED ON INTERCOM FROM GND MAN.
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.