---- The bulletin collects AMDAR reports: FM 42 (AMDAR, Aircraft report (aircraft meteorological data relay)). ---- The bulletin is coded as BUFR code form: FM 94 (BUFR, Binary universal form for the representation of meteorological data) . (Refer to WMO No.306 - Manual on Codes for the definition of WMO international codes) ---- The IUAL01 TTAAii Data Designators decode (2) as: T1 (I): Observational data (Binary coded) - BUFR. T2 (U): Upper air. A1 (A): Single level aircraft reports (automatic). A2 (L): 90°E - 0° southern hemisphere. (2: Refer to WMO No.386 - Manual on the GTS - Attachment II.5) ---- Correspondence with the C13 common BUFR/CREX code table: (004/000) or (Single level upper-air data (other than satellite) -- ASDAR/ACA...