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A B737 was reported by ramp personnel that nose steering pin was incorrectly installed. Technician checked pin and nose steering ok. Found tow bar shear pin broken. Removed bar from service.
| Attributes | |
| ACN | 681930 |
| Time | |
| Date | 200512 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| ASRS Report | 681930 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication Company Environmental Factor |
| Primary Problem | Company |
Narrative:
Ramp service personnel called me when they found out the bypass pin was not installed correctly for steering bypass system. I had the captain operate the steering system; all checked normal. I found out; after the aircraft departed; that one of the pins (shear) in the tow bar was broken. I contacted B737 technician to have a tow bar disconnect inspection.
Original NASA ASRS Text
Title: A B737 WAS RPTED BY RAMP PERSONNEL THAT NOSE STEERING PIN WAS INCORRECTLY INSTALLED. TECHNICIAN CHKED PIN AND NOSE STEERING OK. FOUND TOW BAR SHEAR PIN BROKEN. REMOVED BAR FROM SVC.
Narrative: RAMP SVC PERSONNEL CALLED ME WHEN THEY FOUND OUT THE BYPASS PIN WAS NOT INSTALLED CORRECTLY FOR STEERING BYPASS SYS. I HAD THE CAPT OPERATE THE STEERING SYS; ALL CHKED NORMAL. I FOUND OUT; AFTER THE ACFT DEPARTED; THAT ONE OF THE PINS (SHEAR) IN THE TOW BAR WAS BROKEN. I CONTACTED B737 TECHNICIAN TO HAVE A TOW BAR DISCONNECT INSPECTION.
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.