general manager, and was described as the company's "most seasoned pilot" with over 12,000 flight hours. Investigation The investigation into the crash was carried out by the Directorate of Accident Investigation (DAI) of the Botswanan Ministry of Transport and Communications. Its results were published in June 2013. The main cause of the accident was found to be "engine failure resulting from the failure of the Compressor Turbine Blades." Turbine blades were found to be affected by "sulphidation corrosion", although it could not be established whether that was the root cause of the failure, leaving open the possibility that material failure or inappropriate engine operation may have played a role. The report was also very critical of Moremi Air's management style and training practices, concluding that the company's safety culture "had eroded to the extent that safety was being compromised." Other contributing factors cited were the presence of tall trees in the vicinity of the runway at Xakanaxa, the decision to embark more passengers than the maximum allowed for operations at that airfield, poor supervision of operators and airfields by the Civil Aviation Authority of Botswana (CAAB), and the engine manufacturer's failure to disseminate "critical maintenance information" among operators. The DAI made several safety recommendations to the CAAB calling for stricter supervision of airline and airfield operators, and to Cessna, the aircraft manufacturer, to ensure that the aircraft data acquisition system (ADAS) is made to resist to fire damage. Notes References Aviation accidents and incidents in 2011 Accidents and incidents involving the Cessna 208 Caravan Aviation accidents and incidents in Botswana 2011 in Botswana October 2011 events in Africa 2011 disasters in Africa