<h3><font color = "blue" >Lycoming: IO360-A3B6D; Spun Accessory Drive Bushing; ATA 8540</font></h3>
<p>A repair station submission provides this defect discrepancy that was discovered during an annual inspection. “An aluminum bushing that was located in the accessory case—where the magneto drive gear is located—had become loose in the case, and spun. <em>(This problem was noticed...) </em>because we were not able to install the magneto correctly.... <em>(At times, the impulse coupling would not engage.) </em>We found that during the last overhaul the accessory case had been sent out to ECI. <em>(Conversations with the technician who performed the teardown stated installation of an aluminum bushing is an approved repair...) </em>and if done correctly, there would have been a drilled hole in the bushing for lubrication. But there was no hole, thus not allowing for any lubrication to the bushing area. This allowed for excessive wear and part failure. We recommend <em>(...eliminating the aluminum bushing repair, leaving the only other approved alternative...) </em>which is by <em>(...welding a new boss and drilling a new hole).”. </em></p>