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Preflight Testing and Maintenance Checks for Cockpit Voice Recorders

Preflight Testing and Maintenance Checks for Cockpit Voice Recorders. Problem during installation. CVR System. CVR Audio. Four audio channels Cockpit area microphone (CAM) Pilot audio panel Copilot audio panel Audio panel for third crewmember

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Preflight Testing and Maintenance Checks for Cockpit Voice Recorders

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  1. Preflight Testing and Maintenance Checks for Cockpit Voice Recorders

  2. Problem during installation CVR System

  3. CVR Audio • Four audio channels • Cockpit area microphone (CAM) • Pilot audio panel • Copilot audio panel • Audio panel for third crewmember • No Federal requirement for fourth channel (for two-pilot aircraft)

  4. Accident Helicopter CVR • Pilot and copilot CVR channels did not contain any audio • Audio from CAM was poor

  5. 105 position 105 position 103 position 103 position N579EH CVR System Installation Side view of pilot audio panel Side view of copilot audio panel

  6. Critical CVR System Checks • CVR readout • Would have detected problem with helicopter CVR installation • Can be performed during periodic maintenance • Audio check • Performed before first flight of day

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