Which items are affected when backing up with the Audio Control Panel?

Which items are affected when backing up with the Audio Control Panel?

• A. Navaid Identification, TCAS, MDP, audio tones
• B. Air data computer, inertial navigation, GPS
• C. Hydraulic pump, fuel pump, oil pump
• D. Weather radar, transponder, TCAS

Answer: (A)

The Audio Control Panel is the cockpit’s hub for routing and hearing audio from certain sources. When you use the backup ACP, you’re preserving access to audio-related functions that rely on that panel. Navaid Identification is an audio cue you hear to confirm you’re tuning to the correct VOR/ILS, and TCAS provides audible advisories through the cockpit speakers or headsets; both rely on the ACP for playback. The Maintenance Data Page (MDP) and general audio tones are also part of the audio system that can be carried through the ACP in a backup mode. These are all audio-related or identification functions. Data sources like the Air Data Computer, Inertial Navigation, and GPS feed navigation and flight-control displays rather than produce cockpit audio, so they aren’t affected by backing up the Audio Control Panel. Weather radar and transponder have their own independent control paths and aren’t modified by the ACP backup in this context.

The Audio Control Panel is the cockpit’s hub for routing and hearing audio from certain sources. When you use the backup ACP, you’re preserving access to audio-related functions that rely on that panel. Navaid Identification is an audio cue you hear to confirm you’re tuning to the correct VOR/ILS, and TCAS provides audible advisories through the cockpit speakers or headsets; both rely on the ACP for playback. The Maintenance Data Page (MDP) and general audio tones are also part of the audio system that can be carried through the ACP in a backup mode. These are all audio-related or identification functions.

Data sources like the Air Data Computer, Inertial Navigation, and GPS feed navigation and flight-control displays rather than produce cockpit audio, so they aren’t affected by backing up the Audio Control Panel. Weather radar and transponder have their own independent control paths and aren’t modified by the ACP backup in this context.