Following the completion of additional desktop audits with the regulator, Air Safety Support International (ASSI) at the end of January, Basil Read has now progressed to the final round of desktop audits. Pending the outcome of these, the next step will be an on-site audit by ASSI. This is provisionally scheduled for early April 2016.
Source: St. Helena Tourism Blog 10 March 2016
Will be interesting to see how ASSI will come to the island early April. By ship, Beechcraft, 737-800 or else ...