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During pushback of air carrier large transport tug brakes failed. When aircraft brakes applied to stop movement tug pivoted around tow bar striking aircraft.
| Attributes | |
| ACN | 96042 |
| Time | |
| Date | 198810 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| 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 | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | ground : preflight other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 200 flight time total : 7000 flight time type : 2500 |
| ASRS Report | 96042 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 8000 flight time type : 120 |
| ASRS Report | 95730 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other flight crewa other other : unspecified |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
While pushing back from gate at dfw and about at the proper time for the tug to stop the aircraft, the tug driver shouted over the intercom, 'set the brakes!' the captain applied (set) the brakes on the large transport. The tug was still hooked to the towbar which was still hooked to the nose wheel. The aircraft stopped. The tug had lost its brakes. Its inertia caused it to pivot around the nose wheel and hit the left side of the aircraft, making a big dent and a small hole in the underside of the aircraft fuselage about under the main cabin door. This was caused by a mechanical failure on the tug and there was absolutely nothing we as pilots could have done to prevent it. There were no human injuries. Supplemental information from acn 95819: we evacuated the passenger and the crew through the aft entry door/stairway.
Original NASA ASRS Text
Title: DURING PUSHBACK OF ACR LGT TUG BRAKES FAILED. WHEN ACFT BRAKES APPLIED TO STOP MOVEMENT TUG PIVOTED AROUND TOW BAR STRIKING ACFT.
Narrative: WHILE PUSHING BACK FROM GATE AT DFW AND ABOUT AT THE PROPER TIME FOR THE TUG TO STOP THE ACFT, THE TUG DRIVER SHOUTED OVER THE INTERCOM, 'SET THE BRAKES!' THE CAPT APPLIED (SET) THE BRAKES ON THE LGT. THE TUG WAS STILL HOOKED TO THE TOWBAR WHICH WAS STILL HOOKED TO THE NOSE WHEEL. THE ACFT STOPPED. THE TUG HAD LOST ITS BRAKES. ITS INERTIA CAUSED IT TO PIVOT AROUND THE NOSE WHEEL AND HIT THE LEFT SIDE OF THE ACFT, MAKING A BIG DENT AND A SMALL HOLE IN THE UNDERSIDE OF THE ACFT FUSELAGE ABOUT UNDER THE MAIN CABIN DOOR. THIS WAS CAUSED BY A MECHANICAL FAILURE ON THE TUG AND THERE WAS ABSOLUTELY NOTHING WE AS PLTS COULD HAVE DONE TO PREVENT IT. THERE WERE NO HUMAN INJURIES. SUPPLEMENTAL INFO FROM ACN 95819: WE EVACUATED THE PAX AND THE CREW THROUGH THE AFT ENTRY DOOR/STAIRWAY.
Data retrieved from NASA's ASRS site as of August 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.