What was found
DURING A ROUTINE MX INSPECTION, CRACK WAS DISCOVERED ON THE STABILIZER TRIM HINGE ASSY, (PORT SIDE) P/N: F513-1. TOTAL TIME ON AIRFRAME (AND PART) WAS 802 HOURS. THE CRACK WAS LOCATED BETWEEN THE RADIUS OF THE HINGE ARM AND LIGHTENING HOLE OF HINGE BODY. REPLACEMENT PARTS WERE INSTALLED AS PER MANUF INSTRUCTIONS PRIOR TO NEXT FLT. A/C MANUF HAS ISSUED S/B SB-55-02 HORIZ STABILIZER HINGE MOD FOR ALL MODELS FAC 2C1 A/C. THIS IS A 2-PART SERVICE BULLETIN. THE FIRST PART IS AN IMMEDIATE INSPECTION PRIOR TO NEXT FLT AND RE-INSPECTION EVERY 50 HOURS THEREAFTER UNTIL REPLACEMENT OF HINGES. THE SECOND PART OF THE SB IS IMMEDIATE REPLACEMENT OF HINGES IF CRACKS ARE DISCOVERED OR MANDATORY REPLACEMENT ON OR BEFORE