Safety recommendation
NTSB Recommends FAA Enhance Cargo Door Safety Measures
Federal Aviation Administration urged to incorporate human error considerations into cargo door designs.
The National Transportation Safety Board has recommended that the Federal Aviation Administration require fail-safe design considerations for non plug cargo doors on present and future transport category airplanes to account for conceivable human errors in addition to electrical and mechanical malfunctions.
Original regulatory source: https://data.ntsb.gov/carol-main-public/sr-details/A-89-094