National Transportation Safety Board (NTSB)

The National Transportation Safety Board (NTSB) concluded that the outdated design of Silverliner IV railcars combined with criticized maintenance and operating practices creates an immediate safety risk because electrical fires can spread to occupied compartments.

Cockpit alarm systems can include multiple different alarm types that have varying meanings.

Aviation accident investigations commonly use cockpit voice recorders and flight data to reconstruct the sequence of events and help determine points of impact or failure.

The U.S. National Transportation Safety Board (NTSB) organizes aviation accident investigations into specialized groups such as operations, structures, powerplants, systems, and maintenance.

The National Transportation Safety Board (NTSB) investigative procedure for in-flight incidents commonly includes sending physical components to an NTSB laboratory for examination, interviewing flight crew, and reviewing flight voice and data recorders along with radar and weather data.

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 that improper labeling of wiring, lack of redundant safety systems, and improperly configured electrical systems and generators can hinder a ship crew's ability to recover from onboard power outages.

A 2024 NTSB investigation noted that electrical connections installed during vessel construction are exposed to normal vessel conditions over years, and that failure of a small component (such as a cord or connector) can precipitate major shipboard power-system failures.

The National Transportation Safety Board's (NTSB) 2024 final report found that a loose signal wire connection resulting from improper installation of wireless label banding can cause a complete electrical power loss (blackout) on a vessel, leading to loss of propulsion and steering.

The American Association of State Highway and Transportation Officials (AASHTO) recommends conducting vulnerability assessments to identify ways to protect bridges from ship strikes, and failure to perform such assessments can leave bridges without countermeasures to reduce collapse risk from vessel impacts, according to NTSB's 2024 findings.

Operational practices such as using a flushing pump as a service pump for diesel generators and allowing critical electrical systems to remain in manual mode can limit a vessel's ability to recover power after an electrical blackout, according to NTSB's 2024 findings.

A National Transportation Safety Board (NTSB) investigation into the March 26, 2024 collision involving the containership Dali and the Francis Scott Key Bridge found that a single loose wire in the ship's electrical system caused a circuit breaker to unexpectedly open and led to two vessel blackouts.

The NTSB found that wire-label banding prevented a wire from being fully inserted into a terminal block spring-clamp gate on the containership Dali, causing an inadequate electrical connection.

The NTSB found that a lack of effective and immediate communications to notify highway workers on the Francis Scott Key Bridge prevented timely evacuation and contributed to fatalities during the March 26, 2024 collapse.

The Federal Bureau of Investigation (FBI) can assist Department of Homeland Security immigration enforcement efforts when DHS requests support for major operations.

The Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) are federal agencies that investigate aviation accidents and incidents to determine causes and improve aviation safety.

The U.S. Federal Aviation Administration (FAA) and the National Transportation Safety Board (NTSB) are agencies that investigate civil aviation accidents and incidents.

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