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A B727 on pushback started #2 engine which went to full power uncommanded. Airplane snapped the tow bar and struck the tug; incurring severe damage.
| Attributes | |
| ACN | 662608 |
| Time | |
| Date | 200506 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Controlling Facilities | tower : gmu.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance lead technician : 27 |
| ASRS Report | 662608 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 4 |
| ASRS Report | 662607 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far other anomaly |
| Independent Detector | aircraft equipment other aircraft equipment : #2 eng instruments other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : testing performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
After performing a repositioning of a fuel control rod; the discrepancy was signed off and the aircraft pushed back. After #2 engine had been started by the flight crew and they were starting #3 engine; the #2 engine went to high thrust and caused the aircraft to overpwr the tug. This resulted in the aircraft breaking the tow bar and striking the tug; causing severe damage to the aircraft. No personnel were injured and the crew shut the engine down.
Original NASA ASRS Text
Title: A B727 ON PUSHBACK STARTED #2 ENG WHICH WENT TO FULL PWR UNCOMMANDED. AIRPLANE SNAPPED THE TOW BAR AND STRUCK THE TUG; INCURRING SEVERE DAMAGE.
Narrative: AFTER PERFORMING A REPOSITIONING OF A FUEL CTL ROD; THE DISCREPANCY WAS SIGNED OFF AND THE ACFT PUSHED BACK. AFTER #2 ENG HAD BEEN STARTED BY THE FLT CREW AND THEY WERE STARTING #3 ENG; THE #2 ENG WENT TO HIGH THRUST AND CAUSED THE ACFT TO OVERPWR THE TUG. THIS RESULTED IN THE ACFT BREAKING THE TOW BAR AND STRIKING THE TUG; CAUSING SEVERE DAMAGE TO THE ACFT. NO PERSONNEL WERE INJURED AND THE CREW SHUT THE ENG DOWN.
Data retrieved from NASA's ASRS site as of January 2009 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.