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A CL65 is damaged during pushback at cyyz when the tug lost control of the aircraft and the towbar was broken.
| Attributes | |
| ACN | 636033 |
| Time | |
| Date | 200411 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cyyr.airport |
| State Reference | ON |
| Altitude | agl single value : 0 |
| Environment | |
| Weather Elements | Rain |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 120 flight time total : student flight time type : 1000 |
| ASRS Report | 636033 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 13000 flight time type : 2000 |
| ASRS Report | 636034 |
| Events | |
| Anomaly | non adherence : company policies non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Company |
| Primary Problem | Company |
Narrative:
During pushback from gate at yyz aircraft tug lost control of aircraft while engines were running at idle thrust. Tug impacted right side of aircraft under first officer's window. The towbar used during the pushback also broke into 2 pieces. Contributing factors: tug type was not suitable for pushback during slick conditions on ramp due to rain, weight of aircraft, length of towbar. Surface conditions: ramp was rain soaked. Communications: tug driver was unable to command crew to stop aircraft due to headset type until impact was imminent. Towbar length: towbar provided too much of a fulcrum so that idle power was able to overcome tug on slick surface. Pushback procedure: that type of tug should not be used if engines are to be standard procedure. Weight of aircraft: with only 9 passenger and 10000 pounds of fuel, this increased ability of engines to move aircraft and tug.
Original NASA ASRS Text
Title: A CL65 IS DAMAGED DURING PUSHBACK AT CYYZ WHEN THE TUG LOST CTL OF THE ACFT AND THE TOWBAR WAS BROKEN.
Narrative: DURING PUSHBACK FROM GATE AT YYZ ACFT TUG LOST CTL OF ACFT WHILE ENGS WERE RUNNING AT IDLE THRUST. TUG IMPACTED R SIDE OF ACFT UNDER FO'S WINDOW. THE TOWBAR USED DURING THE PUSHBACK ALSO BROKE INTO 2 PIECES. CONTRIBUTING FACTORS: TUG TYPE WAS NOT SUITABLE FOR PUSHBACK DURING SLICK CONDITIONS ON RAMP DUE TO RAIN, WT OF ACFT, LENGTH OF TOWBAR. SURFACE CONDITIONS: RAMP WAS RAIN SOAKED. COMMUNICATIONS: TUG DRIVER WAS UNABLE TO COMMAND CREW TO STOP ACFT DUE TO HEADSET TYPE UNTIL IMPACT WAS IMMINENT. TOWBAR LENGTH: TOWBAR PROVIDED TOO MUCH OF A FULCRUM SO THAT IDLE POWER WAS ABLE TO OVERCOME TUG ON SLICK SURFACE. PUSHBACK PROC: THAT TYPE OF TUG SHOULD NOT BE USED IF ENGINES ARE TO BE STANDARD PROC. WEIGHT OF ACFT: WITH ONLY 9 PAX AND 10000 LBS OF FUEL, THIS INCREASED ABILITY OF ENGINES TO MOVE ACFT AND 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.