I was emailed the service letter (after multiple contacts with ACS). PM me your email and I can forward it (6 pages long). Relevant info:
”Lord has determined that a small number of components (J-7763-1) shipped between April and May of 2024, were incorrectly manufactured without a metallic shim. The impacted Lord J-9613-series engine mount kits and associated batch numbers that contain the J-7763-1 with the missing component are documented below. Kits should contain two different rubber mounts (one single-layer mount and one two-layer mount). Visually, the J-7763-1 component may appear correct, however, close examination will identify that the affected components do not contain the metallic shim used for achieving the intended compressive stiffness of the engine mount. An example of a J-7763-1 without the shim is shown in Figure 1. A cross reference of the Lord part number with the applicable aircraft model and engine is shown in Table 1.”
They indicate “no safety of flight” issue. I have been traveling this summer (non-flying) since dealing with Spruce and will be following up in Sept.
My part was J-9613-40 from batch no. 12407153.