Where do we source the data for the Values Analyzer Market Commentaries? Rachel October 08, 2021 12:15 Updated Follow Market Commentaries are based on the valuations / opinions of the Ascend by Cirium appraisers. Related articles Is there a recommended inflation rate for forecasting future aircraft and engine values? How often is reported aircraft utilisation data in Fleets Analyzer updated, what is the coverage and what are the sources? Comments 0 comments Please sign in to leave a comment.