Deviation request #115 ETSO‐C139#4 Aircraft Audio Systems and Equipment

Deviates from ETSO‐C139 paragraph 3.1.1 to use RTCA document DO‐214a “Audio Systems Characteristics and Minimum Performance Standards for Aircraft Audio Systems and Equipment” instead of DO‐214.
Starting date of initial consultation

Deviates from ETSO‐C139 paragraph 3.1.1 to use RTCA document DO‐214a “Audio Systems Characteristics and Minimum Performance Standards for Aircraft Audio Systems and Equipment” instead of DO‐214