Functional Hazard Assessment
- The FHA is a function by function analysis that establishes the severity of the failure conditions of each aircraft or system level function, e.g. loss of braking, uncommanded braking, opening a specific valve, etc.
- Aircraft FHAs are performed at a high level and used to identify the aircraft level safety requirements, e.g. FC and severity (CAT, HAZ, MAJ, etc).
- System FHAs are more detailed and identify system failures (single and combinations) that contribute to the aircraft level FCs.
- Both FHAs are qualitative and provide the top events for the PSSA’s FTAs …
