SM69 Rev. 4.00 | AA12S Series Compact Audio Controller Manual |
3.3.5Automatic Fail-safeIn the event of a power failure, automatic fail-safe operation will be activated. This routes the pilot’s phones, mic audio, and mic PTT directly to the COM radio selected by the position of the TX rotary selector switch, and selected audio inputs. Copilot and passengers will have no ICS, music, or receive functions.
In the unlikely event of an AA12S circuit failure that results in a communication failure, the automatic fail-safe mode can be enabled by pulling the AA12S circuit breaker.
Note: In Automatic Fail-Safe mode, the receive/sidetone levels may require adjustment at the audio source.
The pilot should confirm that all aspects of Automatic Fail-Safe operation are working before accepting the aircraft into service.
End of section 3
Oct 13, 2005 | Page 3-5 |
ENG-FORM: 806-0106.DOT | |
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