National Transportation Safety Board

A 2025 National Transportation Safety Board (NTSB) assessment concluded that the outdated design and maintenance and operating practices related to Silverliner IV railcars increase the incidence and severity of electrical fires that can spread to occupied compartments, representing an unacceptable safety risk.

The National Transportation Safety Board (NTSB) routinely recovers and analyzes cockpit voice recorders and flight data recorders as part of aviation accident investigations.

The U.S. National Transportation Safety Board (NTSB) operates a laboratory in Washington, D.C., that analyzes flight recorders (commonly called 'black boxes') and can recover readouts from recorders that have suffered some fire damage.

The National Transportation Safety Board (NTSB) analyzes flight data recorders as part of its aviation accident investigations.

In the United States, the Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) are the federal agencies that handle and investigate civil aircraft accidents.

A 2025 National Transportation Safety Board (NTSB) report concluded that faulty engineering resulted in the construction of a carbon fiber composite pressure vessel that contained multiple anomalies and failed to meet necessary strength and durability requirements.

A 2025 NTSB report found that pre-existing delaminations and additional damage to a carbon fiber composite pressure vessel sustained during earlier dives can further deteriorate and weaken the vessel, potentially producing a local buckling failure that can lead to implosion.

A 2025 NTSB report found that inadequate testing by an operator can result in unawareness of a pressure vessel's true durability prior to human-occupied dives.

A 2025 NTSB report recommended that the U.S. Coast Guard commission a panel of experts to study submersibles and other pressure vessels intended for human occupancy, implement regulations for those vehicles informed by that study, and disseminate the study findings to the industry.

A 2024 National Transportation Safety Board preliminary report documented that accidentally closing an exhaust damper during maintenance can cause a ship's diesel engine to stall, producing a loss of propulsion power while the vessel is docked.

A 2024 National Transportation Safety Board investigative finding indicated that switching a ship's electrical configuration from one transformer-and-breaker system to another can expose the vessel to faults present on the newly active system, such as a loose cable that may cause a breaker to open and result in loss of power.

A 2024 National Transportation Safety Board (NTSB) investigation concluded that a loose wire on the cargo ship Dali tripped a breaker that supplied power to most of the vessel's equipment, causing repeated power failures.

A 2024 NTSB investigation identified multiple systemic safety deficiencies that can impede recovery from vessel power outages, including improperly labeled wiring that prevents secure connections, lack of redundant safety systems, inadequate electrical inspections, and improperly configured electrical systems and generators.

A 2024 NTSB assessment determined that, for the Francis Scott Key Bridge, the risk from larger-sized vessel traffic in the Patapsco River was about 30 times higher than the acceptable level, indicating the importance of vulnerability assessments for bridge safety.

The National Transportation Safety Board (NTSB) is the U.S. federal agency responsible for investigating civil aviation accidents and major transportation incidents.

The National Transportation Safety Board (NTSB) conducts investigations into aviation accidents and issues public updates on the status of those investigations.

The National Transportation Safety Board (NTSB) investigates aviation accidents and commonly recovers flight data recorders (black boxes) as part of those investigations.