An Aircraft manufacturer had planned certification and delivery of its new business class (Part 23) twin-jet aircraft. In the several years since it had certified a new aircraft FAA certification requirements had changed significantly. The impact of these changes in time and effort was underestimated causing the certification date to be missed and creating a risk that the order would be cancelled, the consequence of which could be financial hardship for the customer. 

SeaTec was engaged to address System Safety Analysis (SSA) for the Propulsion system and to bring the aircraft certification process back on-track.


Aircraft system safety certification expertise was provided to complete the propulsion system SSA, the System Functional Hazard Assessment (SFHA), and the Safety Assessment Requirements (SAR)

A highly skilled team consisting of a team lead with deep knowledge in aircraft system safety, project manager, and specialized engineers. 

Stakeholders were engaged to review and reset goals, expectations, work breakdown schedule (WBS), and the System Safety Point of Contact (POC) hierarchy within the company.  

Material related to the propulsion system safety assessment was reviewed and  the system failure conditions for their effect on the aircraft, crew and occupants analyzed to determine the associated severity classification considering crew awareness, flight phase, environmental and operational

Using an established ‘Gold Standard’ methodology the team developed options and selected the method that would best generate content for the System Safety Assessment documentation.

A Standard for the SSA that would align the customer with what the FAA required for certification was defined and agreed 


Propulsion SSA Certification achieved – The propulsion SSA received FAA confirmation that it was acceptable to accomplish certification.

Provisional Type Certification for the Aircraft achieved – Enabling operators to begin flight training.

A reusable repeatable process that increases the probability of Certification and documentation shared – The Gold Standard documentation was provided, enabling the customer to reuse it across all aircraft systems to improve the probability of acceptance of all SSA sections for the other aircraft systems.