Alan
Russian hex 1EA5C8 with Tulpar c/s could be RA-42440 YK42, but why the E unless this is a corrupt signal, wrong imput or miscode and would explain why I have never picked up the only Russian Yak42 I need? NB Tulpar (UTair) is one of the few operators still operating the Yak 42 on scheduled services
The theory also works with the only two 1AXXXX and 1BXXXX coded machines in the db, However I do note that some RF- machines appear in the db as 19XXXX but looks like they have just replaced the second digit 4 or 5 with a 9 as last four digits are common with 14XXXX and 15XXXX hexes.
The Beriev's in the db are well out sync but seem to generally use first digit 1 followed by their reg. so maybe there is no absolute logic but gives us a good clue to what might be using the codes.
The 1FXXXX hexes still baffle me, but could be for RA-3320K style regs or FLARF- (Amateur flyer register) aircraft which do not fit into the known hex/reg list, as they do not seem to fly too high.
X
