A federal investigation into a commuter plane crash off Alaska last year reports that the operator had a history of overweight flights, and that oversight was inadequate, according to the sources. The crash occurred over sea ice and resulted in the deaths of all 10 people on board. Investigators say records and findings from the operator’s past operations show that overweight flights occurred before the accident. The probe also points to shortcomings in how relevant parties monitored compliance, suggesting that safeguards designed to prevent or catch weight-related irregularities were not sufficient. While the sources do not provide detailed technical findings in the excerpts provided, they consistently describe the investigation’s overall conclusion: a combination of operational issues involving weight and a lack of effective oversight contributed to the circumstances surrounding the crash. The investigation is presented as a case study of how repeat compliance issues and insufficient monitoring can intersect with safety risks in aviation operations. Authorities have not been described as assigning blame in these summaries beyond citing the factors identified in the federal report.