When in A/A mode SCS right will select AACQ. Left selects WACQ.
From Chucks Guide:
AACQ (Automatic Acquisition): AACQ serves as a fast way of acquiring a track/contact into Single Target Track. It is entered by pressing the Sensor Control Switch right when
the TDC is assigned to the RDR ATTK format, the A/A master mode is engaged, and the radar is not in an ACM mode. "AACQ" will be indicated on the RDR ATTK page and the
HUD. If the TDC cursor is not over a contact/track, AACQ will place the closest presently detected contact/track in an STT. If the TDC cursor is over a contact/track, it will place
it in STT.
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