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A B737-300 pilot notes that during tug driver training; the tug disconnected after requesting that he release the parking brake.
| Attributes | |
| ACN | 670852 |
| Time | |
| Date | 200509 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : ord.airport |
| State Reference | IL |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 250 |
| ASRS Report | 670852 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | non adherence : company policies non adherence : published procedure non adherence other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : regained aircraft control |
| Consequence | other |
| Supplementary | |
| Problem Areas | Company |
| Primary Problem | Company |
Narrative:
Ord ramp disconnected ground power before APU was online. Then radio contact was established and requested brakes off by tug driver; brakes were then off. Next I see tug respositioning unhooked from tow bar. No radio contact; I reset parking brake; tug hooks back up and radio contact reestablished. Driver told me we were training to reposition tug. I expressed my concern that the brakes were off and was told well the chocks were in place. Maybe a lot more training is really needed.
Original NASA ASRS Text
Title: A B737-300 PLT NOTES THAT DURING TUG DRIVER TRAINING; THE TUG DISCONNECTED AFTER REQUESTING THAT HE RELEASE THE PARKING BRAKE.
Narrative: ORD RAMP DISCONNECTED GND POWER BEFORE APU WAS ONLINE. THEN RADIO CONTACT WAS ESTABLISHED AND REQUESTED BRAKES OFF BY TUG DRIVER; BRAKES WERE THEN OFF. NEXT I SEE TUG RESPOSITIONING UNHOOKED FROM TOW BAR. NO RADIO CONTACT; I RESET PARKING BRAKE; TUG HOOKS BACK UP AND RADIO CONTACT REESTABLISHED. DRIVER TOLD ME WE WERE TRAINING TO REPOSITION TUG. I EXPRESSED MY CONCERN THAT THE BRAKES WERE OFF AND WAS TOLD WELL THE CHOCKS WERE IN PLACE. MAYBE A LOT MORE TRAINING IS REALLY NEEDED.
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.