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Analysis
This method is used to validate
mechanical structures. Inadequate
structural assessment results in
increased risk due to potential for
latent design problems.
The approach is appropriate to
structural design; i.e., airframe.
71 Subsystem Hazard
Analysis
Subsystem Hazard Analysis (SSHA)
identifies hazards and their effects
that may occur as a result of design.
This protocol is appropriate to
subsystems only.
72 System Hazard System Hazard Analysis purpose is Any closed loop hazard
FAA System Safety Handbook, Chapter 9: Analysis Techniques
December 30, 2000
9 - 28
No. Methods and/or
Techniques
Summary Applicability and Use
Analysis to concentrate and assimilate the
results of the SSHA into a single
analysis to ensure the hazards of their
controls or monitors are evaluated to
a system level and handles as
intended.
identification and tracking system
for an entire program, or group of
subsystems can be analyzed.
73 Systematic
Inspection
This technique purpose is to perform
a review or audit of a process or
facility.
The technique is universally
appropriate.
74 Task Analysis Task Analysis is a method to
evaluate a task performed by one or
more personnel from a safety
standpoint in order to identify
undetected hazards, develop
note/cautions/warnings for
integration in order into procedures,
and receive feedback from operating
personnel.
Any process or system that has a
logical start/stop point or
intermediate segments, which lend
themselves to analysis.
This methodology is universally
appropriate to any operation, which
there is a human input, is performed.
75 Technique For
Human Error Rate
Prediction
(THERP)
This technique provides a
quantitative measure of human
operator error in a process.
This technique is the standard
method for the quantifying of human
error in industry.
76 Test Safety
Analysis
Test Safety Analysis ensures a safe
environment during the conduct of
systems and prototype testing. It also
provides safety lessons to be
incorporated into the design, as
application.
A lessons learned approach of any
new systems ‘or potentially
hazardous subsystems’ is provided.
This approach is especially
applicable to the development of
new systems, and particularly in the
engineering/development phase.
77 Time/Loss
Analysis For
Emergency
Response
Evaluation
This technique is a system safety
analysis-based process to semiquantitatively
analyze, measure and
evaluate planned or actual loss
outcomes resulting from the action of
equipment, procedures and personnel
during emergencies or accidents.
Any airport, airline and other
aircraft operators should have an
emergency contingency plan to
handle unexpected events can be
analyzed.
This approach defines organize data
needed to assess the objectives,
progress, and outcome of an
emergency response; to identify
response problems; to find and
assess options to eliminate or reduce
response problems and risks; to
monitor future performance; and to
investigate accidents.
78 Uncertainty Uncertainty Analysis addresses, This discipline does not typically
FAA System Safety Handbook, Chapter 9: Analysis Techniques
December 30, 2000
9 - 29
No. Methods and/or
Techniques
Summary Applicability and Use
Analysis quantitatively and qualitatively, those
factors that cause the results of an
analysis to be uncertain.
address uncertainty explicitly and
there are arguments that all analyses
should. This is an region of great
potential application.
79 Walk-Trough
Analysis
This technique is a systematic
analysis that should be used to
determine and correct root causes of
unplanned occurrences related to
maintenance.
This technique is applicable to
maintenance.
80 What-If Analysis What-If Analysis methodology
identifies hazards, hazardous
situations, or specific accident events
that could produce an undesirable
consequence.
The technique is universally
appropriate.
81 What-If/Checklist
Analysis
What-If or Checklist Analysis is a
simple method of applying logic in a
deterministic manner.
The technique is universally
appropriate.
FAA System Safety Handbook, Appendix A: Glossary
December 30, 2000
A-1
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