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A line mechanic reports a spot check of their A320 aircraft found better than 50% of the aircraft either have the left-hand or right-hand main landing gear (medium large transport) side-stay cuff bolt heads facing forward instead of aft. Concerns about the requirements of airworthiness directive 2005-10-04 and an airbus maintenance tip letter for deferral of the bolts are raised.
| Attributes | |
| ACN | 852573 |
| Time | |
| Date | 200909 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Parked |
| Component | |
| Aircraft Component | Gear Down Lock |
| Person 1 | |
| Function | Technician |
| Qualification | Maintenance Airframe Maintenance Powerplant |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy Deviation - Procedural Maintenance |
Narrative:
Spot check of airbus on (the) line; found better then 50% of our airbus either have the left-hand or right-hand side main landing gear (medium large transport) with the cuff bolts heads installed forward. This check is covered on certain types of overnight service; and also from engineering directives on account of airworthiness directive (ad) 2005-10-04. However; the overnight service check does not stipulate bolt head position and this is being overlooked. With so many found out of configuration and no maintenance computer history; there should be an item in the maintenance manual or airbus maintenance tip (mt) to make sure the pins get looked at for correct installation fleet-wide. Mt-32-XXX covers the deferring of these bolts (pins) facing fwd. The deferral requires that you defer it to next main landing gear (medium large transport) overhaul. The mt-32-XXX needs to be clear on when that limit is. The engineering directive limits; at the bottom of the page; do not help. We on the line need a better way to find when the overhaul is due by days or cycles.
Original NASA ASRS Text
Title: A Line Mechanic reports a spot check of their A320 aircraft found better than 50% of the aircraft either have the left-hand or right-hand Main Landing Gear (MLG) Side-Stay Cuff bolt heads facing Forward instead of Aft. Concerns about the requirements of Airworthiness Directive 2005-10-04 and an Airbus Maintenance Tip letter for deferral of the bolts are raised.
Narrative: Spot check of Airbus on (the) Line; found better then 50% of our Airbus either have the left-hand or right-hand side Main Landing Gear (MLG) with the cuff bolts heads installed forward. This check is covered on certain types of overnight service; and also from Engineering Directives on account of Airworthiness Directive (AD) 2005-10-04. However; the overnight service check does not stipulate bolt head position and this is being overlooked. With so many found out of configuration and no Maintenance computer history; there should be an item in the Maintenance Manual or Airbus Maintenance Tip (Mt) to make sure the pins get looked at for correct installation fleet-wide. Mt-32-XXX covers the deferring of these bolts (pins) facing fwd. The deferral requires that you defer it to next Main Landing Gear (MLG) overhaul. The Mt-32-XXX needs to be clear on when that limit is. The Engineering Directive limits; at the bottom of the page; do not help. We on the Line need a better way to find when the overhaul is due by days or cycles.
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.