As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON MAINTENANCE SHUTDOWN DURING A NORMAL HELI LOGGING DAY, DURING INSP OF FLIGHT CONTROLS THE APPRENTICE NOTICED SOME SMOKING COMING FROM THE BOTTOM CORNER OF THE STBD OCTAGONAL CARGO DOOR. UPON FURTHER INSP IT WAS DETERMINED TO BE A CRACK.