Bengt Olov Nas is a graduate in Aeronautical engineering at the Royal Institute of Technology in Stockholm Sweden. Joined SAS operations department in 1978 as a performance engineer. From 1982 head of aircraft and engine analysis department responsible for evaluating all the possible candidates for replacement of older aircraft and maintained the company contact with the manufacturing industry and research organisations regarding the aerospace technology development. Bengt Olov represented SAS on AEA and IATA environmental committees, including periods as chairman. Aviation environmental issues developed from the 1990 on into a more strategic important issue for SAS contributions and Bengt-Olov was involved as a technical expert in SAS's internal environmental forums, including great contribution to SAS's environmental annual reports. Bengt Olov kept his role as head of aircraft and engine analysis within the department Fleet Development until a contractual retirement 2008. Bengt Olov has since worked through his company NACE AB as a consultant to IATA on ICAO Committee for Aviation Environmental Protection (CAEP) as an independent expert regarding technological development and elaboration of new environmental rules for the aerospace industry.