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An air carrier B727 ground crew started to push back before the captain released the brakes. The tow bar shear pin broke as it was designed to do. Aircraft equipment problem nose gear doors fell open for an unknown reason.
| Attributes | |
| ACN | 345111 |
| Time | |
| Date | 199608 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : stx |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | ground : preflight ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 345111 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
Upon getting ready to push, I told the ground crew we were calling for the push. As we received the cabin ready report and the first officer told me we were cleared to push the plane, the aircraft moved slightly followed by a bang. The ground crew told me we had a problem. The nose gear doors had fallen open and the tow bar had broken a pin. I had not yet told the push crew that the brakes were released. Nevertheless, the push did not seem to be abrupt or energetic.
Original NASA ASRS Text
Title: AN ACR B727 GND CREW STARTED TO PUSH BACK BEFORE THE CAPT RELEASED THE BRAKES. THE TOW BAR SHEAR PIN BROKE AS IT WAS DESIGNED TO DO. ACFT EQUIP PROB NOSE GEAR DOORS FELL OPEN FOR AN UNKNOWN REASON.
Narrative: UPON GETTING READY TO PUSH, I TOLD THE GND CREW WE WERE CALLING FOR THE PUSH. AS WE RECEIVED THE CABIN READY RPT AND THE FO TOLD ME WE WERE CLRED TO PUSH THE PLANE, THE ACFT MOVED SLIGHTLY FOLLOWED BY A BANG. THE GND CREW TOLD ME WE HAD A PROB. THE NOSE GEAR DOORS HAD FALLEN OPEN AND THE TOW BAR HAD BROKEN A PIN. I HAD NOT YET TOLD THE PUSH CREW THAT THE BRAKES WERE RELEASED. NEVERTHELESS, THE PUSH DID NOT SEEM TO BE ABRUPT OR ENERGETIC.
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.