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System Safety Assessment
Functional Hazard Assessment (FHA)
Failure Mode and Effects Analysis (FMEA)
Failure Mode and Effects Summary (FMES)
Preliminary System Safety Assessment (PSSA)
System Safety Assessment (SSA)
Common Cause Analysis (CCA)
ü Common Mode Analysis (CMA)
ü Particular Risk Analysis (PRA)
ü Zonal Safety Analysis (ZSA)
Architectural Mitigation Analyses
DAL Assessments / Justification reports
Reliability Engineering
Reliability Management / Program Office
Reliability Program Plans
Reliability Modeling
Reliability Development & Accelerated-Life
Failure Rate / Reliability Predictions
Failure Reporting, Analysis & Corrective Action
System (FRACAS) |
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Technical Points /
Summary
? Fault
Tree Analysis is a top down modeling method for estimating the
probability of multiple combinatory or single point failures
contributing to the occurrence of a given failure condition (FC).
? Typically performed
using a software tool such as CAFTA. Can be qualitative, especially in
the conceptual design phase, but most often includes failure rates and
exposure times for basic events in order to facilitate the
quantification of probabilities for top events (i.e. FCs identified in
the aircraft or system FHA as well as the PSSA).
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? Parnassus has
prepared FTAs for numerous electro-mechanical, hydraulic and electronic
avionics, flight controls, hydraulic and hydro-mechanical items and
systems certified for use on commercial and military jets.
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