ED Decision 2022/018/R
A1.1 Introduction
This Appendix corrects RTCA DO‑214A,
‘Audio Systems Characteristics and Minimum Performance Standards
for Aircraft Audio Systems and Equipment’, regarding an optical
character recognition error in the value of a test capacitor in a
test procedure not detected during the peer review process. The value
was ‘1E‑14 F
(0.01 pF)’ instead of the required
‘1E-8 F
(0.01 µF)’, so it was six orders of
magnitude too low for interphone channels.
In addition, this Appendix clarifies RTCA DO-214A, ‘Audio Systems Characteristics and Minimum Performance Standards for Aircraft Audio Systems and Equipment’, regarding an ambiguous requirement for the HOT microphone feature in Section 1.4.5.
A1.2 Correction
In Section 2.8.2.9 of RTCA DO-214A, ‘Audio Systems Characteristics and Minimum Performance Standards for Aircraft Audio Systems and Equipment’, ‘0.01 pF’ is replaced by ‘10 nF’.
[Amdt ETSO/17]
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