GTS Bulletin: UAYG71 LYYN - Upper air data (details are described in the abstract)
Description
The UAYG71 TTAAii Data Designators decode as: T1 (U): Upper air data T1T2 (UA): Aircraft reports A1A2 (YG): Serbia T1T2ii (UA71): Special aircraft reports, related to volcanic ash (Remarks from Volume-C: NilReason)
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