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Special Bulletin S4/2012: Sikorsky S-76C++, G-WIWI

Date of occurrence: 03 May 2012

Summary:
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.

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Report name:
S4/2012 Sikorsky S-76C++, G-WIWI
Registration:
G-WIWI
Type:
Sikorsky S-76C++
Location:
Private landing site, East Sussex
Date of occurrence:
03 May 2012
Category:
Commercial Air Transport - Rotorcraft
Summary:
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.
Download report:
PDF icon S4-2012 Sikorsky S-76C++ G-WIWI 11-12.pdf (361.74 kb)