NTSB
美国国家运输安全委员会（National Transportation Safety Board，NTSB），是美国联邦政府独立调查机构，负责调查航空、铁路、公路、船舶及管道等交通领域的重大事故。其主要职能包括分析事故原因、发布安全调查报告，并向相关政府部门和行业提出安全改进建议，以预防类似事故再次发生。NTSB不具备监管或执法权力，独立性是其核心运作原则。
Timeline (last 90 days)
The National Transportation Safety Board (NTSB) released a preliminary report on an accident in which an Amazon Prime Air Boeing 767 cargo aircraft ran off a runway.
NTSB preliminary reports focus on factual statements, drawing no conclusions and assigning no cause; only the final report provides a probable cause and safety recommendations.
The NTSB investigation process is divided into three stages: a preliminary report issued within days of the accident, factual reports that may be released during the investigation, and a final report in which the investigative board determines the probable cause by majority vote.
The NTSB's full investigation process takes an average of 12 to 24 months, and complex cases may take longer.
The National Transportation Safety Board (NTSB) typically conducts independent investigations into such accidents, with investigation cycles generally lasting from several months to over a year.
All Facts (7)
NTSB在事故调查报告中以频谱图（spectrogram）的形式发布部分CVR录音的视觉化表示
90%UnverifiedCVR录音内容在美国受到《独立安全委员会法》（Independent Safety Board Act）的严格保护，违者可面临刑事处罚
85%UnverifiedThe NTSB's full investigation process takes an average of 12 to 24 months, and complex cases may take longer.
50%UnverifiedNTSB preliminary reports focus on factual statements, drawing no conclusions and assigning no cause; only the final report provides a probable cause and safety recommendations.
50%UnverifiedThe NTSB investigation process is divided into three stages: a preliminary report issued within days of the accident, factual reports that may be released during the investigation, and a final report in which the investigative board determines the probable cause by majority vote.
50%UnverifiedThe National Transportation Safety Board (NTSB) typically conducts independent investigations into such accidents, with investigation cycles generally lasting from several months to over a year.
50%UnverifiedThe National Transportation Safety Board (NTSB) released a preliminary report on an accident in which an Amazon Prime Air Boeing 767 cargo aircraft ran off a runway.
50%