As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE DOING THE ZONE 5 INSPECTION, FOUND A CRACK IN THE UPPER MAIN GEARBOX HOUSING JUST AFT OF THE RIGHT REAR SUPPORT LEG. THE CRACK WAS FOUND IN THE AREA SHOWN IN CHAPTER 5-20-00, PAGE 23, FIGURE 16. THE MAIN GEARBOX WILL BE CHANGED TO FIX THIS PROBLEM. AIRCRAFT TOTAL TIME 2,128.7 HOURS. M/R GEARBOX P/N 7635109600042.