 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew reported ground personnel advised them to release brakes when they were not connected to a tug and the aircraft rolled backwards.
| Attributes | |
| ACN | 1751551 |
| Time | |
| Date | 202007 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | SFO.Airport |
| State Reference | CA |
| Aircraft 1 | |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Flight Plan | IFR |
| Person 1 | |
| Function | Pilot Flying Captain |
| Experience | Flight Crew Last 90 Days 29 Flight Crew Total 2480 Flight Crew Type 2480 |
| Person 2 | |
| Function | Pilot Not Flying First Officer |
| Experience | Flight Crew Last 90 Days 35 Flight Crew Total 596 Flight Crew Type 596 |
| Events | |
| Anomaly | Ground Event / Encounter Other / Unknown Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
During acft receipt at a fixed jetway the aircraft was determined to be approximately 8 to 12 inches too far forward of the parking mark. Ground crew established verbal contact and coordinated with the cockpit crew to push the aircraft back to the correct spot. After the initial attempt to set the aircraft on the mark; the ground crew communicated that they would have to attempt the movement again and proceeded to tell the captain to release the brakes. When I released the brakes; the aircraft began moving backwards and after about 1.5 feet; the ground crew said; 'ground to cockpit; set brakes'.then the ground crew advised us that we would have to release the brakes so that he could pull us forward. At this point; I asked the ground crew if we had been attached to the tug when he had previously instructed us to release the brakes. He informed us that we were not in fact attached; so we therefore had experienced an uncommanded movement of the aircraft. At this point; the final attempt to bring the aircraft to the parking mark was only undertaken after I specifically inquired as whether the aircraft was secured to the tractor.
Original NASA ASRS Text
Title: Flight Crew reported ground personnel advised them to release brakes when they were not connected to a tug and the aircraft rolled backwards.
Narrative: During acft receipt at a fixed jetway the aircraft was determined to be approximately 8 to 12 inches too far forward of the parking mark. Ground crew established verbal contact and coordinated with the cockpit crew to push the aircraft back to the correct spot. After the initial attempt to set the aircraft on the mark; the ground crew communicated that they would have to attempt the movement again and proceeded to tell the Captain to release the brakes. When I released the brakes; the aircraft began moving backwards and after about 1.5 feet; the ground crew said; 'Ground to Cockpit; set brakes'.Then the ground crew advised us that we would have to release the brakes so that he could pull us forward. At this point; I asked the ground crew if we had been attached to the tug when he had previously instructed us to release the brakes. He informed us that we were NOT in fact attached; so we therefore had experienced an uncommanded movement of the aircraft. At this point; the final attempt to bring the aircraft to the parking mark was only undertaken after I specifically inquired as whether the aircraft was secured to the tractor.
Data retrieved from NASA's ASRS site 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.