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A line mechanic reports he found a missing tie bolt on the #2 front medium large transport (main landing gear) wheel. Mechanic notes he has seen a trend in broken or missing tie bolts on B757's and A320's tire/wheel assemblies.
| Attributes | |
| ACN | 899423 |
| Time | |
| Date | 201007 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Main Gear Wheel |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Powerplant Maintenance Airframe |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While performing a number-2 engine oil service on a B757-200; I noticed the # 2 front (main landing gear) medium large transport wheel was missing one tie bolt. Tire was replaced per (maintenance manual) MM 32-45-01. No delay was incurred due to tire wheel assembly replacement. Remaining portion of bolt will be held for [investigation]. As I stated in my previous report; there seems to be a trend in broken wheel tie bolts. This was an inbound trip.
Original NASA ASRS Text
Title: A Line Mechanic reports he found a missing tie bolt on the #2 front MLG (Main Landing Gear) wheel. Mechanic notes he has seen a trend in broken or missing tie bolts on B757's and A320's tire/wheel assemblies.
Narrative: While performing a Number-2 engine oil service on a B757-200; I noticed the # 2 front (Main Landing Gear) MLG wheel was missing one Tie bolt. Tire was replaced per (Maintenance Manual) MM 32-45-01. No delay was incurred due to tire wheel assembly replacement. Remaining portion of bolt will be held for [investigation]. As I stated in my previous report; there seems to be a trend in broken wheel tie bolts. This was an inbound trip.
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.