Results of measurements of helical current perturbations associated with the disruptive instability are given for q(a) ∼ 3. An m = 1, n = 1 mode develops between disruptions; fast growing m = 2, n = 1 and m = 6, n = 2 (or m = 3, n = 1) modes, with growth times of ∼ 10 μs, accompany the disruptions.