Preliminary System Safety Assessment (PSSA) is used to assess the system architecture, determining how failures lead to failure conditions in Functional Hazard Assessment (FHA) …

Preliminary System Safety Assessment (PSSA) is a mainly top-down iterative process, initiated at the beginning of a new design or modification to an existing design of an Air Navigation System.

ARP4761, Guidelines for Conducting the Safety Assessment Process on Civil Aircraft, Systems, and Equipment is an Aerospace Recommended Practice from SAE International. [1]

This chapter gives practical guidance on verifying and validating a Preliminary System Safety Assessment (PSSA). This guidance is to be used with the SAM and aims to avoid duplication.

Safety Objectives and a list of hazards and assumptions. All these come out of the FHA (Functional Hazard Assessment); A description of the system architecture with the Safety …

Jan 1, 2015 · The safety assessment process begins with FHA, preliminary system safety assessment (PSSA), and system safety assessment (SSA). These techniques are applied …

The PSSA is an iterative analysis that should begin in the conceptual phases of a project, and is initially based on the failure conditions (FC) listed in the system functional hazard assessment …

Jun 4, 1996 · The purpose of PASA is to identify the interactions and dependencies between aircraft systems, to assess the aircraft level failure conditions identified by AFHA, to evaluate …

We’ll summarize ARP4761A’s Functional Hazard Assessment (FHA), Preliminary System Safety Assessment (PSSA), and System Safety Assessment (SSA) safety activities, along with the …

The system safety assessment presents the body of proof that the qualitative and quantitative safety requirements established by the FHA and PSSA are satisfied by the as-built item or …