Extracted From:
AC No. 43-16A
Alert No. 310
May 2004

During an annual inspection, the technician discovered the inboard lower engine mount leg (P/N 643042) was cracked on the left engine.

The aircraft total time was 4,392 hours, and the engine total time was 685 hours since factory rebuilt. The crack was about 1-1/8 inches long and located at the lower edge 3 inches from the engine attach point.

The submitter also stated that it had a small porosity void 3/8 inch from the edge of the mount leg and in line with the crack.

Part total time unknown.