Overall Trends
Total, fatal, and serious accidents in the selected range.
Search investigations, review source evidence, monitor watched reports, and trace long-term patterns from one calm, data-first workspace.
Fast key and full-text search with live filters, watches, and precise metadata.
Use quotes for exact phrase matches (for example "fuel selector valve").
Track fatal and non-fatal accident patterns across Part 91, Part 135, and Part 121 operations.
Major cases, deep-report coverage, and investigation media across decades of NTSB history.
Move quickly by aircraft, airport, operator, and time with indexes built for research, not wandering.
NTSB Reports is an independent research and search tool for public aviation accident and incident records. It brings NTSB aviation reports, structured fields, docket files, extracted figures, photos, videos, and update history into one searchable interface.
The goal is practical safety education: make it faster to find relevant investigations, compare similar events, review factual records, and understand the evidence behind probable-cause and preliminary reports.
The investigative work and source records belong to the National Transportation Safety Board and the published investigation record. This site is not affiliated with or endorsed by the NTSB.
Middleboro, MA
THE PILOT AND OPERATOR DID A WALK AROUND PREFLIGHT OF THE HELICOPTER WHILE IT WAS SECURED TO A FLATBED TRAILER. THE PILOT RELEASED THE LEFT TIE DOWN STRAP ON THE LEFT SKID, BOARDED, AND STARTED THE HELICOPTER. THE PILOT ATTEMPTED TO HOVER-TAXI OFF THE FLATBED TRAILER. THE HELICOPTER ROLLED OVER ON ITS RIGHT SIDE AND CRASHED INTO THE GROUND BESIDE THE TRAILER. THE HELICOPTER'S BLADES CONTACTED THE GROUND AND A VEHICLE WHICH WAS PARKED 30-50 FEET AWAY. AFTER EXITING THE HELICOPTER, THE PILOT NOTED THE RIGHT REAR SKID TIE DOWN WAS STILL LOCKED OVER THE SKID AND ATTACHED TO THE TRAILER.
THE PILOT'S FAILURE TO RELEASE A TIE DOWN STRAP FROM THE HELICOPTER'S SKID DURING THE PREFLIGHT.
THE PILOT AND OPERATOR DID A WALK AROUND PREFLIGHT OF THE HELICOPTER WHILE IT WAS SECURED TO A FLATBED TRAILER. THE PILOT RELEASED THE LEFT TIE DOWN STRAP ON THE LEFT SKID, BOARDED, AND STARTED THE HELICOPTER. THE PILOT ATTEMPTED TO HOVER-TAXI OFF THE FLATBED TRAILER. THE HELICOPTER ROLLED OVER ON ITS RIGHT SIDE AND CRASHED INTO THE GROUND BESIDE THE TRAILER. THE HELICOPTER'S BLADES CONTACTED THE GROUND AND A VEHICLE WHICH WAS PARKED 30-50 FEET AWAY. AFTER EXITING THE HELICOPTER, THE PILOT NOTED THE RIGHT REAR SKID TIE DOWN WAS STILL LOCKED OVER THE SKID AND ATTACHED TO THE TRAILER.