Must I submit a calibration certificate with all claims? You are required to submit the calibration certificate for all Diamond Badges and FAI Diplomas. By admin|2021-11-29T10:34:32+02:0029th November 2021|About flight recorders|Comments Off on Must I submit a calibration certificate with all claims? Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail