The NTSB is investigating how a door plug came off an Alaska Airlines Boeing 737 Max 9. Its chair said it could survey every Boeing employee about its safety culture.

The agency said it would also look into an Oct. 28, 2022, derailment of a Norfolk Southern train in Sandusky, Ohio. The NTSB said it will conduct an in-depth investigation into the safety ...

Politics What to know about the NTSB and the investigation into the DC plane crash The NTSB is an independent federal agency responsible for investigating all civil aviation accidents.