Changes to regulations can mean old aircraft need upgrading with new safety related systems. Compliance with the mandates are necessary to continue operations. The challenges of integrating modern avionics equipment into an old aircraft are numerous, including identification of the appropriate avionics inputs and managing the interfaces between analogue and digital components.
GVH Aerospace was presented with the challenge of designing and certifying a Cockpit Voice Recorder System (CVR), a Flight Data Recorder System (FDR) and a Quick Access Recorder (QAR) system into the customer’s fleet of fifteen Dassault Falcon 20 special mission aircraft. The installed system are required to exceed the ANO Scale P and S5 requirements and provide a means for flight data monitoring and analysis.
GVH Aerospace responded to the challenge in three phases, starting with a requirements definition and certification planning phase for risk reduction, followed by a preliminary design phase to finalise the concept design and certification approach. Once the certification plan and Statement of Requirement was finalised, GVH Aerospace then launched into the detailed design and certification phase.
The installed systems included a Universal CVR and DFDR, together with a Miniature Acquisition Unit (MAU), dedicated accelerometer, cockpit controls, flap position sensors and interfaces from ARINC 429, discrete inputs and other aircraft sensor inputs. The project included complete DO-160 qualification of a new avionics LRU and subsequently European Parts Approval under our EASA Part 21J DOA. The modifications were extensively ground and flight tested and GVH Aerospace overcame the numerous challenges arising from the new system’s integration to deliver the project under EASA STC 10054826.
Banner photograph by Adrian Pingstone, released into public domain.