8.3 Aircraft types
The NTM data base now covers 82 various aircraft types and engine combinations relevant to the NTM members. The aircrafts are specified in three different tables based on their use and configurations: pure cargo freighters (30), pure passenger airliners (38) and combined passenger and freight aircrafts (14 belly freighters). Compared to data sets used for previous versions new computations has been made with updated and more relevant parameters regarding for example fuel capacity (volume or weight limited) in relation to cargo or passenger loading factors, thus enabling better estimation of flight distances. The modifications were motivated by result comparisons for cargo freighters with Boeing data (payload-range diagrams) and the NTM database is now more comprehensive as well as more mature with errors detected and corrected