As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) DURING GEOSURVEY WITH A POD HANGING FROM THE CARGO HOOK, APPROXIMATELY 30 MINUTES AFTER TAKEOFF, CARGO RELEASED UNCOMMANDED AND THE POD DROPPED AND WAS DESTROYED. DISASSEMBLY OF THE CARGO HOOK REVEALED THAT THE RELEASE LEVER RETURN SPRING WAS NOT ENGAGED IN THE HOLE AT THE BOTTOM OF THE CASING, THEREFORE, NOT DRIVING THE LEVER TO THE FULLY LOCKED POSITION. PART TC: 23