NTSB report shows temperature issue, engine failure before plane crash in Northern Colorado

CTA Yellow Line Crash Probed By NTSB Investigators

No issues found with Chopper 6 engine after crash, NTSB says in preliminary report

What types of accidents does the NTSB investigate? - TimesMojo

NTSB continues investigating what caused helicopter crash

NTSB: Airline pilots routinely trained on engine failures, emergency descents

NTSB warns Congress: Air safety showing 'clear signs of strain'

Independence of NTSB aviation investigations questioned over reliance on outside help