What was found
CRUISING ALONG AT FL400 THE LT ENGINE FLAMED OUT WITH NO INDICATIONS WHAT SO EVER. HAD AN X ON THE N2 VIBRATION. ELECTED NOT TO RESTART AND DIVERTED. NO CHIP, FILTER DETECTOR MESSAGES. DISASSEMBLED FRONT SUMP & FOUND TOWERSHAFT DISENGAGED FROM BEVEL GEARSHAFT DUE TO EXCESSIVE WEAR AT BEVEL GEARSHAFT TO RETAINING BOOT INTERFACE. COMPLIED WITH SB CFE738-72-8070R1. REASSEMBLED ENGINE. COMPLIED WITH OIL FLUSH PROCEDURE SERVICED WITH OIL. NR 1 ENGINE OPS AND LEAK CHECKED GOOD. INSPECTED CHIP DETECTOR AS SATISFACTORY IAW LMM 72-06-03.