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Notice of proposed rulemaking (NPRM).

On March 7, 2008, the FAA published a final rule titled "Revisions to Cockpit Voice Recorder and Digital Flight Data Recorder Regulations." The rule required certain upgrades of digital flight data recorder and cockpit voice recorder equipment on certain aircraft beginning April 7, 2010. The FAA is proposing to change that compliance date for some aircraft as outlined in this notice. This action follows petitions from several aircraft manufacturers and industry organizations indicating an inability to comply with the April 2010 requirement.

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