TITLE: GCN CIRCULAR NUMBER: 20955 SUBJECT: GRB 170317A: 15 GHz upper limits from AMI DATE: 17/03/31 13:28:06 GMT FROM: Kunal Mooley at Oxford U K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), D. Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester) The AMI Large Array robotically triggered on the Swift alert for GRB 170317A (LaPorte et al., GCN 20885) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 Mar 17.59, Mar 18.78, Mar 20.79 and Mar 22.78 (UT) do not reveal any radio source at the XRT location (Beardmore et al., GCN 20887), with 3sigma upper limits of 126 uJy, 246 uJy, 84 uJy and 111 uJy respectively. We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.