Mandatory service bulletin requiring inspection of impulse coupling rivets on specific Champion Aerospace Slick magnetos to prevent catastrophic engine failure.
This document is a mandatory Service Bulletin issued by Champion Aerospace LLC regarding potential safety issues with the impulse coupling rivets on certain Slick by Champion magnetos. The issue involves rivets loosening relative to factory placement, which could enter the engine gear train and cause damage or catastrophic failure.
The bulletin outlines specific compliance requirements for aircraft utilizing affected magneto models (4200/4300/4700 series and 6200/6300/6700 series). It details inspection procedures, including initial inspections within the next 100 hours Time in Service (TIS) and recurring inspections every 400 hours TIS. If loose rivets are found, the document provides two warranty resolution options: installing an approved replacement kit or shipping the unit to Champion Aerospace for repair.
The purpose is to require inspection of impulse coupled Slick by Champion magnetos due to potential issues with impulse coupling rivets.
An initial inspection is required within the next 100 hours Time in Service (TIS) but not to exceed 400 hours total TIS, followed by recurring inspections every 400 hours TIS.