MOC between NTIB and Ministry of Health of UkraineRules and procedures for accidents and incidents technical investigation in civil aviation (ua)NBAAI manual on accidents and incidents investigationMethodical guidance on human factor role study during air accidents investigation (ua)MOU between NBAAI and State aviation administration of Ukraine (ua) Occurrence category instruction (ua)Safety recommendation issuance instruction (ua)Temporary instruction on occurrence reporting to NBAAI