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A line mechanic describes the events and environment that led to his signing for a # 4 main tire installation that was accomplished by a mechanic who had not been qualified to sign-off their company tire write-ups. The main tire installed was not rated for the heavier B737.
| Attributes | |
| ACN | 863220 |
| Time | |
| Date | 200911 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Main Gear Tire |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Experience | Maintenance Technician 35 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance |
Narrative:
Signed-off release of tire change; due to mechanic not qualified to do so on the type of B737 aircraft. Turns out tire was not the proper tire for our heavier rated B737 series. I did assist sliding the tire on with the help of two other mechanics; the tire and equipment were brought to the aircraft by the lead on duty.I was assigned this aircraft to perform securing back in its place... Blood pressure 'bp' cuffs. I was met by a mechanic who signed the non-routine write-up; who (also) wrote the tire up; telling me he had a tire. I went to tell the duty lead of his find; and when I got to the plane to do the oil service; I showed the lead; then I went to write oils in the log. When I came out of the aircraft; the lead was bringing over a tire; and equipment to change the tire assembly.I will not sign for anyone's action; if they do not read serviceable tags for tires of the type of equipment they are to be used. Communication between technicians is a factor. I assumed the proper tire was brought over; and the person filling out the tag; knew the tire was correct for this type of aircraft.
Original NASA ASRS Text
Title: A Line Mechanic describes the events and environment that led to his signing for a # 4 Main tire installation that was accomplished by a Mechanic who had not been qualified to sign-off their company tire write-ups. The Main tire installed was not rated for the heavier B737.
Narrative: Signed-off Release of tire change; due to Mechanic not Qualified to do so on the type of B737 aircraft. Turns out tire was not the proper tire for our heavier rated B737 series. I did assist sliding the tire on with the help of two other Mechanics; the tire and equipment were brought to the aircraft by the Lead on duty.I was assigned this aircraft to perform securing back in its place... Blood Pressure 'BP' Cuffs. I was met by a Mechanic who signed the Non-routine Write-up; who (also) wrote the tire up; telling me he had a tire. I went to tell the Duty Lead of his find; and when I got to the plane to do the oil service; I showed the Lead; then I went to write oils in the Log. When I came out of the aircraft; the Lead was bringing over a tire; and equipment to change the tire assembly.I will not sign for anyone's action; if they do not read serviceable tags for tires of the type of equipment they are to be used. Communication between Technicians is a factor. I assumed the proper tire was brought over; and the person filling out the tag; knew the tire was correct for this type of aircraft.
Data retrieved from NASA's ASRS site as of April 2012 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.