The FAA Wednesday evening proposed an emergency airworthiness directive requiring owners of Lycoming engines to inspect and potentially replace off-spec connecting rod small-end bushings in Lycoming engines overhauled during the 2015 to 2016 time period. The AD codifies the procedures found in Lycoming’s Mandatory Service Bulletin SB 632 released last month.
Source: avwebFAA Proposes Emergency AD For Lycoming Rods