Unverified50% confidenceFactExact time
NTSB复杂案例的调查周期往往长达12至18个月，采用专题调查小组（Party System）机制
1
Sources
50%
Confidence
Long-term
Relevance
7/15/2026
First Seen
Sources
NTSB报告解读：NetJets四十年首起致命事故深度分析
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