NTSB Faults Philadelphia Transit Agency Over Train Fires

The National Transportation Safety Board said hundreds of aging rail cars should be taken out of service until they can be replaced or retrofitted.

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Boeing Will Regain Ability to Certify Some Planes From F.A.A.

The Federal Aviation Administration said the aerospace company will be allowed to approve some new 737 Max and 787 Dreamliner jets.

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First Lawsuit Filed Over Plane-Helicopter Crash in Washington

The widow of a passenger on the American Airlines jet sued two airlines and the government over the Jan. 29 crash, which killed 67. Lawyers for other victims’ relatives said more suits would follow.

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Now Arriving, a New Theory of In-Flight Turbulence

Physicists have devised a new model to account for the discomfort that airline passengers know all too well.

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Severe Turbulence Caught Delta Pilots Off Guard, New Report Says

A preliminary report from the National Transportation Safety Board detailed how a flight bound for Europe hit turbulence violent enough to send 18 passengers to the hospital.

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Inspector General to Review F.A.A.’s Handling of D.C. Airspace After Crash

The announcement comes a week after the National Transportation Safety Board grilled aviation officials about safety gaps in the airspace near the capital.

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Tensions Flare Between Two Federal Agencies Charged With Aviation Safety

A marathon of recent public hearings highlighted a rift over the investigation into the fatal midair crash in January between an Army helicopter and a passenger jet.

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Army Pilots Might Have Struggled to See Passenger Jet Before D.C. Crash

Light pollution from Washington and the passenger jet’s dim lights might have contributed to difficulties spotting American Airlines Flight 5342 before the collision on Jan. 29, Army experts said.

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After D.C. Plane Crash, Air Traffic Controllers Were Not Tested for Alcohol

The F.A.A. has since been training on-call specialists to be snappier about administering alcohol and drug tests after a serious incident, an official said.

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Key Takeaways From the D.C. Plane Crash Hearing

After hours of testimony and thousands of pages of new documents, here’s what emerged in the first day of a marathon National Transportation Safety Board hearing.

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