ASTM F3235-17

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F3235 −17
Standard Specification for
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Electrical Storage Batteries in Small Aircraft
This standard is issued under the fixed designation F3235; 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 3.2 Definitions of Terms Specific to This Standard:
3.2.1 aircraft type code, n—anAircraft Type Code (ATC) is
1.1 This specification covers international standards for the
defined by considering both the technical considerations re-
electrical storage battery aspects of airworthiness and design
garding the design of the aircraft and the airworthiness level
for “small” aircraft.
established based upon risk-based criteria; the method of
1.2 The applicant for a design approval must seek the
defining an ATC applicable to this specification is defined in
individual guidance of their respective CAA body concerning
Specification F3061/F3061M.
the use of this specification as part of a certification plan. For
4. Electrical Storage Batteries
information on which CAA regulatory bodies have accepted
NOTE 1—Table 1 provides correlation between various Aircraft Type
this specification (in whole or in part) as a means of compli-
Codes and the individual requirements contained within this section; refer
ance to their SmallAircraftAirworthiness regulations (herein-
to 3.2.1. For each subsection, an indicator can be found under each ATC
after referred to as “the Rules”), refer to ASTM F44 webpage
character field; three indicators are used:
(www.ASTM.org/COMMITTEE/F44.htm) which includes
An empty cell ( ) in all applicable ATC character field columns
indicates that an aircraft must meet the requirements of that subsection.
CAA website links.
A white circle (○) in multiple columns indicates that the requirements
1.3 This standard does not purport to address all of the
of that subsection are not applicable to an aircraft only if all such ATC
safety concerns, if any, associated with its use. It is the
character fields are applicable.
responsibility of the user of this standard to establish appro- A mark-out (×) in any of the applicable ATC character field columns
indicates that the requirements of that subsection are not applicable to an
priate safety and health practices and determine the applica-
aircraft if that ATC character field is applicable.
bility of regulatory limitations prior to use.
Example—AnaircraftwithanATCof1SRLLDLNisbeingconsidered.
Since all applicable columns are indicated for 4.1.1, that subsection is
2. Referenced Documents
applicable to the aircraft.
2.1 Following is a list of external standards referenced
4.1 Nickel Cadmium Batteries:
throughout this specification; the earliest revision acceptable
4.1.1 Each nickel cadmium battery installation capable of
for use is indicated. In all cases, later document revisions are
being used to start an engine or auxiliary power unit must have
acceptable if shown to be equivalent to the listed revision, or if
provisions to prevent any hazardous effect on structure or
otherwise formally accepted by the governing civil aviation
essential systems that may be caused by the maximum amount
authority; earlier revisions are not acceptable.
of heat the battery can generate during a short circuit of the
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battery or of its individual cells.
2.2 ASTM Standards:
4.1.2 Nickel cadmium battery installations capable of being
F3060 Terminology for Aircraft
used to start an engine or auxiliary power unit must meet the
F3061/F3061M Specification for Systems and Equipment in
requirements of either 4.1.2.1, 4.1.2.2,or 4.1.2.3.
Small Aircraft
4.1.2.1 If the requirements of either 4.1.2.2 or 4.1.2.3 are
3. Terminology
not met, nickel cadmium battery installations capable of being
used to start an engine or auxiliary power unit must have a
3.1 Terminology specific to this specification is provided
system to control the charging rate of the battery automatically
below. For general terminology, refer to Terminology F3060.
so as to prevent battery overheating.
4.1.2.2 If the requirements of either 4.1.2.1 or 4.1.2.3 are
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ThisspecificationisunderthejurisdictionofASTMCommitteeF44onGeneral
not met, nickel cadmium battery installations capable of being
Aviation Aircraft and is the direct responsibility of Subcommittee F44.50 on
used to start an engine or auxiliary power unit must have a
Systems and Equipment.
battery temperature sensing and over-temperature warning
Current edition approved Feb. 15, 2017. Published March 2017. DOI: 10.1520/
F3235-17.
system with a means for disconnecting the battery from its
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
charging source in
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