A fatal crash in Alaska in November 2013 was initiated by one small mistake by the pilot — a missed frequency change, which meant the lights failed to come on as expected at the destination airport — but in the NTSB’s final report, issued on Friday, the safety board said a chain of events and decisions by the pilot, the company he worked for, and other company employees, all contributed to the accident.
Source: avwebNTSB: Chain Of Choices Behind Alaska Crash