As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION FOUND AFT CABIN BULKHEAD LOCATED AT STA + 3.5 METERS, AT WATERLINE + 1 METER (LEFT SIDE), 3 INCH CRACK FROM INSPECTION LIGHTENING HOLE TO BOTTOM OF LT MAIN ROTOR TRANSMISSION VERTICAL STRUT ATTACH BRACKET. SUSPECT BULKHEAD FABRICATED FROM MATERIAL TOO 'THIN' TO ALLOW FOR HIGH GROSS-WEIGHT OPERATION, OR MANUFACTURING FLAW.