The National Transportation Safety Board (NTSB) has released the results of a special investigation involving more than 500 accidents between 2010 and 2022. The study focused on commercial operations involving commuter air carriers, air tour operators, air ambulance services, on-demand business charter flights and some other operations. The NTSB reported it launched the investigation in 2022 following “a cluster of safety issues” involving Part 135 operators. The initiative did not include Part 121 major airline operations.
The NTSB said that Special Investigation Report AIR-24-03, titled “Safety and Industry Data Improvements for Part 135 Operations,” is available at the above link.