The National Transportation Safety Board has directed the Federal Aviation Administration to require Robinson Helicopter to update flight manuals regarding main rotor assembly vibrations.
Safety recommendation
The National Transportation Safety Board has directed the Federal Aviation Administration to require Robinson Helicopter to update flight manuals regarding main rotor assembly vibrations.
The National Transportation Safety Board (NTSB) has issued safety recommendation ANC09GA040, designated as A-11-085. This directive is addressed to the Federal Aviation Administration and requires Robinson Helicopter to amend the R44 helicopter flight manual. The amendment must inform pilots of the potential for mast-rocking vibration in the main rotor assembly. Additionally, the updated manual must provide instructions on how to safely exit this specific condition. The NTSB emphasizes the need for clear guidance to ensure pilot safety regarding this mechanical issue.