Thank you, SadPole. As far as I can see, GOAROUND is pulse command, ie button without fixed position. Also, first thing it's perform is unconditional "Program reset" by relay 15 (along with impulse swithing of all relays in AutoLanding module), so, I think, some event must be recorded by FDR. At the other side, I can't figure how can something be recieved FROM Ш1-23 pin, it's definitely input, not output.
UPD I found (via aviasim.ru) full book from which you take this diagram. Definitely УХОД (Go Around) will not produce any signal if one don't press ГЛИССАДА (glidepass) button before and if ABSU isn't in LANDING mode.
Last edited by Kulverstukas; 16th Jan 2011 at 17:29.