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Old 18th Mar 2021, 18:08
  #61 (permalink)  
capngrog
 
Join Date: Nov 2015
Location: Paisley, Florida USA
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Possibly not pilot error?

Although I have many hours of flying IN helicopters, I have never flown one. My flight experience is limited to fixed wing only. A tail rotor failure is just another possibility.

On 22 May, 2020, FAA Airworthiness Directive (AD) Number 2020-08-10 became effective and applied to certain Robinson R-44 series helicopters. This AD concerned possible tail rotor failure and required inspection for cracks.

Attached is a link to the AD; however, you may prefer to copy and paste to your browser the inactive link below.

https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgad.nsf/0/b1400c9f67bf3f828625854d0042cd8e/$FILE/2020-08-10.pdf

I would imagine that the loss of a tail rotor blade would cause loss of tail rotor effectiveness and could cause pitch oscillations and eventual separation of parts of the tail boom due to excessive vibration. Of course vibration due to loss of a tail rotor blade should have been immediately noticed by the pilot; however, he apparently made no mention of excess vibration in his statement to authorities.

Regards,
Grog
Attached Files
File Type: pdf
2020-08-10.pdf (101.5 KB, 6 views)

Last edited by capngrog; 18th Mar 2021 at 18:12. Reason: remove unnecessary remarks about link
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