BSC007 Revision 2 was released on 30 September 2015, which included a description of how to remove the vertical and horizontal fins to perform the inspection. It referred to the same inspection procedure as Revision 1. However, both versions did not include an initial or recurrent time period within which to conduct the inspection.
The inspection was incorporated into their maintenance manual and scheduled inspection table, and is required every 100 hours’ time-in-service. Cicaré advised that they continue to monitor the ongoing non-destructive inspections of the assembly, and that as of November 2019, no other cracks have been found.
Cicaré have also advised that the stabiliser assembly was redesigned at the end of 2015. The new stabiliser was originally designed for the Cicaré CH-8 series helicopter, as the original Cicaré 7 series stabiliser was too small for a two (side-by-side) seat helicopter, such as the CH-8. Cicaré also advised that they wanted to improve the structural and aerodynamic characteristics, and improve the production process. Following design, static testing and flight testing on the CH-8, the new design was tested on the Cicaré 7 series and Cicaré 12 with positive results. All new helicopters, except the SVH4 trainer, utilise the new design and it is also available for retrofit on earlier Cicaré 7 series models.
BSC013, T-type stabilizer installation, released on 18 March 2019, provided information on why and how to perform the installation. If the new stabiliser was installed, the 100 hourly inspection, in accordance with BSC007, was no longer required. Cicaré have advised that they are continuing to monitor in‑service behaviour of the new stabiliser in the Cicaré CH-8 every 100 hours, as part of the certification process and internal tracking of the in-service life of the components The ATSB has been advised that at least two operators in Australia have installed the new design.