Krauss 1970: 3 (p. i). Polysemy: 'to go (q.v.) / to come'.
Browsing through [Krauss 1970] strongly suggests that the most neutral and frequent Eyak verb for 'to go / to come', used with sg. subj., is =a.
Cf. some examples for the meaning 'to go': "where did you go (s=ah-ɬ)?", "nor will you know whither she's gone (s=ah-ɬ) and left you" [Krauss 1970: 49], "right into where water's formed a puddle he walked (s=ah-ɬ)" [Krauss 1970: 2718], "he didn't go (s=ah-ɬ-ĩh) far" [Krauss 1970: 2782], "he went (s=ah-ɬ-ĩh) by me", "he walked (s=ah-ɬ) by in front of/behind me" [Krauss 1970: 2841], "he went (s=ah-ɬ-ĩh) out" [Krauss 1970: 2856].
Examples for the meaning 'to come' are (selectively): "that man would come (qʰuʔw=ah)" [Krauss 1982: 44], "bogeyman will come (qʰuʔw=ah) here" [Krauss 1970: 2871], "he didn't come (ʔǝ=s=ah-l-q) at a good time" [Krauss 1970: 73], "did he come (s=ah-ɬ) visit you?", "did you come (s=ah-ɬ) close to it?" [Krauss 1970: 109], "do something quick: he's come (s=ah-ɬ) here!" [Krauss 1970: 1836], "say to him thus that he should come (ʔ=iy=aː-χ) to me" [Krauss 1970: 2092], "I come (ʔǝ=x=aː-kʼ) to where it's daylight" [Krauss 1970: 497], "why don't you come (ʔ=iːy=aː-kʼ-q) to (visit) me?" [Krauss 1970: 2262], "come (iy=aʔ) here!" [Krauss 1982: 86].
Unfortunately, pages with the entry "a1" are missing from the available draft copy of [Krauss 1970] (the vowel section of the dictionary simply begins with the entry "a2"; in the same way a1 is not included into the English-Eyak index at the end of the dictionary). This missing root 'to go (sg.)' is explicitly added by Krauss in the preface [Krauss 1970: 3 (p. i)]; there are also internal references to a1 'to go' in the text, e.g. [Krauss 1970: 1505].
Cf. the verb for 'to go' (and apparently 'to come'?), used with pl. subj., =ʔaʔčʼ, which is likewise missing from the dictionary and added in [Krauss 1970: 3 (p. i)] (note that =k=ɬ=ʔaʔčʼ means 'to stand (pl. subj.)', see sub 'stand'). A second root 'to go / to come', used with pl. animate subj., is =qʰah (a defective verb, attested only in active imperfective and imperative) [Krauss 1970: 1495].