ASTM F3230-17
(Practice)Standard Practice for Safety Assessment of Systems and Equipment in Small Aircraft
Standard Practice for Safety Assessment of Systems and Equipment in Small Aircraft
SCOPE
1.1 This practice covers internationally accepted methods for conducting safety assessments of systems and equipment for “small” aircraft.
1.2 The applicant for a design approval must seek the individual guidance of their respective CAA body concerning the use of this practice as part of a certification plan. For information on which CAA regulatory bodies have accepted this practice (in whole or in part) as a means of compliance to their Small Aircraft Airworthiness regulations (hereinafter referred to as “the Rules”), refer to ASTM F44 webpage (www.ASTM.org/COMMITTEE/F44.htm) which includes CAA website links.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
General Information
Standards Content (Sample)
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Designation: F3230 − 17
Standard Practice for
Safety Assessment of Systems and Equipment in Small
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Aircraft
This standard is issued under the fixed designation F3230; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
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1. Scope 2.3 SAE Standards:
SAE ARP4761Guidelines and Methods for Conducting the
1.1 This practice covers internationally accepted methods
SafetyAssessmentProcessonCivilAirborneSystemsand
for conducting safety assessments of systems and equipment
Equipment
for “small” aircraft.
3. Terminology
1.2 The applicant for a design approval must seek the
individual guidance of their respective CAA body concerning 3.1 Terminology specific to this practice is provided below.
For general terminology, refer to Terminology F3060.
the use of this practice as part of a certification plan. For
information on which CAA regulatory bodies have accepted
3.2 Definitions of Terms Specific to This Standard:
this practice (in whole or in part) as a means of compliance to
3.2.1 aircraft type code, n—anAircraftType Code (ATC) is
their Small Aircraft Airworthiness regulations (hereinafter
defined by considering both the technical considerations re-
referred to as “the Rules”), refer to ASTM F44 webpage garding the design of the aircraft and the airworthiness level
established based upon risk-based criteria; the method of
(www.ASTM.org/COMMITTEE/F44.htm) which includes
defining an ATC applicable to this practice is defined in
CAA website links.
Specification F3061/F3061M.
1.3 This standard does not purport to address all of the
3.2.2 Catastrophic Failure Condition, n—a Catastrophic
safety concerns, if any, associated with its use. It is the
Failure Condition is one that would result in multiple fatalities
responsibility of the user of this standard to establish appro-
of the occupants, or incapacitation or fatal injury to a flight
priate safety and health practices and determine the applica-
crew member, normally with the loss of the aircraft.
bility of regulatory limitations prior to use.
3.2.3 complex system, n—a complex system is a system
whoseoperation,failuremodes,orfailureeffectsaredifficultto
2. Referenced Documents
comprehendwithouttheaidofanalyticalmethodsorstructured
2.1 Following is a list of external standards referenced
assessmentmethods,suchasFailureModesandEffectsAnaly-
throughoutthispractice;theearliestrevisionacceptableforuse
sis (FMEA) or Fault Tree Analysis (FTA); increased system
is indicated. In all cases later document revisions are accept-
complexity is often caused by such items as sophisticated
able if shown to be equivalent to the listed revision, or if
components and multiple interrelationships.
otherwise formally accepted by the governing civil aviation
3.2.4 conventional system, n—a conventional system is a
authority; earlier revisions are not acceptable.
system whose function, the technological means to implement
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2.2 ASTM Standards: its function, and its intended usage are all the same as, or
F3060Terminology for Aircraft closely similar to, that of previously approved systems that are
F3061/F3061MSpecification for Systems and Equipment in commonly used.
Small Aircraft
3.2.5 design appraisal, n—adesignappraisalisaqualitative
appraisal of the integrity and safety of the system design; an
effective appraisal requires experienced judgment.
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This practice is under the jurisdiction of ASTM Committee F44 on General
3.2.6 extremely improbable, n—extremely improbable
Aviation Aircraft and is the direct responsibility of Subcommittee F44.50 on
means that an event is considered so unlikely that it is not
Systems and Equipment.
anticipated to occur during the entire operational life of all
Current edition approved Feb. 15, 2017. Published March 2017. DOI: 10.1520/
aircraft of one type.
F3230-17.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Standards volume information, refer to the standard’s Document Summary page on AvailablefromSAEInternational(SAE),400CommonwealthDr.,Warrendale,
the ASTM website. PA 15096, http://www.sae.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3230 − 17
3.2.7 extremely remote, n—extremely remote means that an 3.2.17 redundancy, n—the term redundancy refers to the
event is not anticipated to occur to each aircraft during its total presence of more than one independent means for accomplish-
life, but may occur a few times when considering the
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