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A line technician reports a plastic tire tread depth gauge is not a calibrated tool and will not give an accurate measurement due to wear.
| Attributes | |
| ACN | 638255 |
| Time | |
| Date | 200411 |
| Day | Thu |
| 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 | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 638255 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : company policies non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other Other |
| Factors | |
| Maintenance | contributing factor : tooling performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Aircraft Maintenance Human Performance Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
The depth gauge is not a calibrated tool. It is a piece of plastic which may, upon use with or performing tire inspection, not give a mechanic an accurate measurement.
Original NASA ASRS Text
Title: A LINE TECHNICIAN RPTS A PLASTIC TIRE TREAD DEPTH GAUGE IS NOT A CALIBRATED TOOL AND WILL NOT GIVE AN ACCURATE MEASUREMENT DUE TO WEAR.
Narrative: THE DEPTH GAUGE IS NOT A CALIBRATED TOOL. IT IS A PIECE OF PLASTIC WHICH MAY, UPON USE WITH OR PERFORMING TIRE INSPECTION, NOT GIVE A MECH AN ACCURATE MEASUREMENT.
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.