The accident occurred on 28 December 2016.
Special Bulletin published to provide preliminary information gathered from an initial ground inspection, recorded data, and other sources.
PDF at AAIB_S1-2017_G-WNSR.pdf
Air Accidents Investigation Branch (AAIB) special Bulletin S1/2017 on Sikorsky S-92A G-WNSR accident of December 28, 2016