Following an event in which high torque was used, flight data was analysed on behalf of the operator using incorrect conversion information relevant to earlier variants of the helicopter. The operator was therefore unaware that total torque had exceeded a level at which maintenance action was required. The investigation revealed the existence of the correct information and one
Safety Recommendation is made to publish it in a single document.
Special Bulletin S4-2012 - Sikorsky S-76C++ G-WIWI 11-12
Published 16 December 2014