ASTM F3454-21

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: F3454 − 21
Standard Practice for
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Alerting Methods in Aircraft
This standard is issued under the fixed designation F3454; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
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1.1 This practice provides guidance for how an applicant 2.1 ASTM Standards:
can show compliance to the requirements for Warnings, 2.1.1 Following is a list of external standards referenced
Cautions, and Advisory Indications to the responsible crew- throughout this practice. In all cases, later document revisions
member. are acceptable if shown to be equivalent to the listed revision,
or if otherwise formally accepted by the governing CAA;
1.2 An applicant intending to propose this information as
earlier revisions are not acceptable.
Means of Compliance for a design approval must seek guid-
F3060 Terminology for Aircraft
ance from their respective oversight authority (for example,
F3061/F3061M Specification for Systems and Equipment in
published guidance from applicable civil aviation authority
Small Aircraft
(CAA)) concerning the acceptable use and application thereof.
F3180/F3180M Specification for Low-Speed Flight Charac-
For information on which oversight authorities have accepted
teristics of Aircraft
this practice (in whole or in part) as an acceptable Means of
F3117/F3117M Specification for Crew Interface in Aircraft
Compliance to their regulatory requirements (hereinafter “the
F3230 Practice for Safety Assessment of Systems and
Rules”), refer to the ASTM Committee F44 web page
Equipment in Small Aircraft
(www.astm.org/COMMITTEE/F44.htm).
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2.2 FAA Document:
1.3 Units—This document may present information in SI
Advisory Circular (AC) 23-8 Flight Test Guide for Certifi-
units, English Engineering units, or both; the values stated in
cation of Part 23 Airplanes
each system are not necessarily exact equivalents; therefore, to
3. Terminology
ensure conformance with the standard, each system shall be
used independently of the other, and values from the two
3.1 Definitions—For general terminology, refer toTerminol-
systems shall not be combined.
ogy F3060.
1.4 This standard does not purport to address all of the
4. Significance and Use
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
4.1 This practice proposes the characteristics of alerting
priate safety, health, and environmental practices and deter-
methods, including Stall Warning Alerts.
mine the applicability of regulatory limitations prior to use.
4.2 The Stall Warning Alerts may be used as part of the
1.5 This international standard was developed in accor-
compliance approach for Stall Characteristics, Stall Warning,
dance with internationally recognized principles on standard-
and Spins applicable to Normal Category Aeroplanes, using
ization established in the Decision on Principles for the
Specification F3180/F3180M, Stall Warning, while character-
Development of International Standards, Guides and Recom-
istics of all of the alert methods may be used to supplement
mendations issued by the World Trade Organization Technical
Specification F3117/F3117M.
Barriers to Trade (TBT) Committee.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This practice is under the jurisdiction of ASTM Committee F44 on General contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Aviation Aircraft and is the direct responsibility of Subcommittee F44.10 on Standards volume information, refer to the standard’s Document Summary page on
General. the ASTM website.
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Current edition approved Aug. 1, 2021. Published September 2021. DOI: Available from Federal Aviation Administration (FAA), 800 Independence
10.1520/F3454-21. Ave., SW, Washington, DC 20591, http://www.faa.gov.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
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F3454 − 21
5. Alert Characteristics Specific to Stall Warning 5.3.2 Voice alerts associated with stall warnings must use
words specific to the condition.
5.1 Specific types of alerts discussed in this section are:
5.3.3 Aural alerts must be effective under all ambient noise
Sensory Path Description
conditions.
Aural Constant sound
5.4 Tactile Stall Warning Alerts:
Aural Interrupted sound
Aural Voice
NOTE 2—While natural/airframe buffet may indu
...