As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) THE ACFT HAS A 4.5" CRACK ON THE LT SIDE OF THE ROOF SHELL ASSY JUST IN FRONT OF THE FWD ENGINE FIREWALL. THIS WAS DISCOVERED FOLLOWING TROUBLESHOOTING ACTIONS, RELEVANT TO THE INVESTIGATION OF A NOISE BEING EXPERIENCED DURING LT PEDAL INPUTS DURING HOVER OPERATIONS. THE ACFT IS USED FOR ELECTRONIC NEWS GATHERING. CRACK FOUND USING NDT INSPECTION TECHNIQUES.