As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 400 HOUR INSPECTION FOUND A CRACK APPROX. 1.5" LONG ON THE R/H FORWARD MAIN GEARBOX DECK AT THE TRANSITION TO THE CABIN ROOF ABOVE THE #4 BULKHEAD. THE CRACK IS LOCATED IN THE RADIUS OF THE DOUBLER THAT MAKES THE TRANSITION. REPAIR REQUIRES DOUBLERS IAW EC-135 STANDARD REPAIR MANUAL SRM 51-71-53,8-7.