As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRACK FOUND ON MAIN GEARBOX (TRANSMISSION IN VERTICAL CAST WEBBING ABOVE ENGINE TO TRANSMISSION DRIVE QUILL. MILITARY TECHNICAL MANUAL ALLOWS .2500 INCH RADIUS/POLISH INTO WEBBING THIS CRACK HAS BEEN FOUND ON THREE (3 EACH) TRANSMISSIONS ON OTHER AC WITH ONE PENETRATING THE GEARBOX AND LEAKING FLUID. (K)