Home' RTCA Documents for Review : DO-262D Contents Appendix D
© RTCA, 2018
EQUIPMENT PERFORMANCE - ENVIRONMENTAL CONDITION
The environmental tests and their associated performance requirements described in
this Section are intended to provide a laboratory means of determining the overall
performance characteristics of the equipment under environmental conditions
representative of those which may be encountered in actual operations.
Unless otherwise specified, the test procedures applicable to a determination of
equipment performance under environmental test conditions are contained in RTCA
Document DO-160G / EUROCAE ED-14G, Environmental Conditions and Test
Procedures for Airborne Equipment. General information regarding the use of the
procedures in RTCA DO-160G is contained in Sections 1.0 through 3.0 of that
document. Also, a method of identifying which environmental tests were conducted
and other amplifying information on the conduct of the tests is contained in Appendix
A of RTCA DO-160G / EUROCAE ED-14G.
Some of the minimum performance requirements in Section 2.2 of this normative
appendix are not required to be qualified to all of the conditions contained in RTCA
DO-160G / EUROCAE ED-14G. Judgment and experience have indicated that these
particular performance parameters are not susceptible to certain environmental
conditions and that the level of performance specified in Section 2.2 will not be
measurably degraded by exposure to these conditions. There it is sufficient to verify
compliance at ambient conditions for many requirements, and then continued
compliance is inferred by successfully meeting the requirements.
TABLE D2-13 is a compliance matrix that cross-references the RTCA DO-160G /
EUROCAE ED-14G environmental test requirements with the performance
requirements listed in Section 2.2.3 of this document. Only those tests specifically
identified by "X" or by a numerically referenced footnote need be repeated in the
various environments. Furthermore, unless otherwise noted successful verification of
compliance to a requirement section implies compliance to all lesser sections as well.
In addition to the exceptions above, certain environmental tests contained in this
section are not required for minimum performance equipment unless the manufacturer
wishes to qualify the equipment for additional environmental conditions. If the
manufacturer wishes to qualify the equipment to these additional conditions, then
these tests shall be performed.
This document contains provisions to subject different AES configurations to
environmental qualification. Specific AES performance tests have been included for
use in conjunction with the environmental procedures of RTCA DO-160G / EUROCAE
ED-14G. These tests are a subset of the full AES performance tests contained in
Section 2.4. Normally, a minimum performance standard does not provide specific
equipment performance tests to be used in conjunction with the environmental
procedures of RTCA DO-160G. However, the large number of performance tests in
Section 2.4 indicates that a test procedure that includes all of the performance tests
combined with the appropriate environmental procedures would be impractical.
Nominal environment testing, followed by extreme environment testing, shall be
conducted on the AES with the operational software installed according to the correct
software version number as specified in the AES configuration documentation.
The operational software may include test utilities in support of DO-262 /
ED-243 and DO-160G/ED-14G test functions.
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