 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
A commercial fixed wing medium large transport aircraft, while being pushed back from the gate in communication with the tug driver, was without warning disconnected. The aircraft rolled into the tug incurring damage.
| Attributes | |
| ACN | 423647 |
| Time | |
| Date | 199812 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sjc |
| State Reference | CA |
| 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 | Commercial Fixed Wing |
| Flight Phase | ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 250 flight time total : 19800 flight time type : 3500 |
| ASRS Report | 423647 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time total : 6600 |
| ASRS Report | 423893 |
| Events | |
| Anomaly | aircraft equipment problem : critical conflict : ground critical non adherence : far non adherence : published procedure |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Pushback was initiated at XA15Z from gate zy at sjc. During the pushback, the driver apologized for the slow push and I told her to take her time, there is no rush. Both engines were started and running at idle thrust. The pushback continued in a forward direction moving slowly. Everything seemed to be proceeding in a normal manner until the driver frantically said, 'where are you going?' I immediately stepped on the brakes because it didn't seem the aircraft was under the control of the tug. At no point during the pushback was aircraft control xferred to the flight crew nor was the aircraft moving under its own power. We were never told that the pushback was completed nor to set the brakes. Also, we never responded to any commands given from the tug driver. Supplemental information from acn 423647: the aircraft sustained damage when it contacted the tug.
Original NASA ASRS Text
Title: A COMMERCIAL FIXED WING MLG ACFT, WHILE BEING PUSHED BACK FROM THE GATE IN COM WITH THE TUG DRIVER, WAS WITHOUT WARNING DISCONNECTED. THE ACFT ROLLED INTO THE TUG INCURRING DAMAGE.
Narrative: PUSHBACK WAS INITIATED AT XA15Z FROM GATE ZY AT SJC. DURING THE PUSHBACK, THE DRIVER APOLOGIZED FOR THE SLOW PUSH AND I TOLD HER TO TAKE HER TIME, THERE IS NO RUSH. BOTH ENGS WERE STARTED AND RUNNING AT IDLE THRUST. THE PUSHBACK CONTINUED IN A FORWARD DIRECTION MOVING SLOWLY. EVERYTHING SEEMED TO BE PROCEEDING IN A NORMAL MANNER UNTIL THE DRIVER FRANTICALLY SAID, 'WHERE ARE YOU GOING?' I IMMEDIATELY STEPPED ON THE BRAKES BECAUSE IT DIDN'T SEEM THE ACFT WAS UNDER THE CTL OF THE TUG. AT NO POINT DURING THE PUSHBACK WAS ACFT CTL XFERRED TO THE FLC NOR WAS THE ACFT MOVING UNDER ITS OWN PWR. WE WERE NEVER TOLD THAT THE PUSHBACK WAS COMPLETED NOR TO SET THE BRAKES. ALSO, WE NEVER RESPONDED TO ANY COMMANDS GIVEN FROM THE TUG DRIVER. SUPPLEMENTAL INFO FROM ACN 423647: THE ACFT SUSTAINED DAMAGE WHEN IT CONTACTED THE TUG.
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.