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A saab 340A was dispatched in non compliance with the right nosewheel assembly installed improperly. Wheel spacer omitted from installation.
| Attributes | |
| ACN | 434469 |
| Time | |
| Date | 199904 |
| Day | Sun |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 135 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 3 |
| ASRS Report | 434469 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : published procedure |
| Independent Detector | other other : tire shop technician |
| Resolutory Action | flight crew : landed as precaution |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : lighting performance deficiency : repair performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I and a fairly new mechanic were each installing a nosewheel assembly on a saab 340A model. I was on the left, he was on the right side. I noted that he properly torqued and safetied the wheel assembly and that he had the proper manual references available. The wheel assemblies were installed around XA00. In the morning just after the plane had taken off, it was noted by the tire shop that a spacer was still stuck on the old right assembly and had not been installed on the r-hand axle with the new wheel assembly. The aircraft returned to ZZZ airport immediately and the spacer was installed. No damage occurred and the aircraft was returned to service. The discrepancy was an oversight by a fairly inexperienced mechanic, and one which I'm sure he won't make again. I, however, am at fault because I signed off his r-hand wheel assembly. He is not authorized to sign the logbook yet and I didn't have him short-sign it.
Original NASA ASRS Text
Title: A SAAB 340A WAS DISPATCHED IN NON COMPLIANCE WITH THE R NOSEWHEEL ASSEMBLY INSTALLED IMPROPERLY. WHEEL SPACER OMITTED FROM INSTALLATION.
Narrative: I AND A FAIRLY NEW MECH WERE EACH INSTALLING A NOSEWHEEL ASSEMBLY ON A SAAB 340A MODEL. I WAS ON THE L, HE WAS ON THE R SIDE. I NOTED THAT HE PROPERLY TORQUED AND SAFETIED THE WHEEL ASSEMBLY AND THAT HE HAD THE PROPER MANUAL REFS AVAILABLE. THE WHEEL ASSEMBLIES WERE INSTALLED AROUND XA00. IN THE MORNING JUST AFTER THE PLANE HAD TAKEN OFF, IT WAS NOTED BY THE TIRE SHOP THAT A SPACER WAS STILL STUCK ON THE OLD R ASSEMBLY AND HAD NOT BEEN INSTALLED ON THE R-HAND AXLE WITH THE NEW WHEEL ASSEMBLY. THE ACFT RETURNED TO ZZZ ARPT IMMEDIATELY AND THE SPACER WAS INSTALLED. NO DAMAGE OCCURRED AND THE ACFT WAS RETURNED TO SVC. THE DISCREPANCY WAS AN OVERSIGHT BY A FAIRLY INEXPERIENCED MECH, AND ONE WHICH I'M SURE HE WON'T MAKE AGAIN. I, HOWEVER, AM AT FAULT BECAUSE I SIGNED OFF HIS R-HAND WHEEL ASSEMBLY. HE IS NOT AUTHORIZED TO SIGN THE LOGBOOK YET AND I DIDN'T HAVE HIM SHORT-SIGN IT.
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.