Airworthiness directives › 2022-20-04
AD 2022-20-04 Airworthiness Directives; Bell Textron Canada Limited Helicopters
Applicability*9
This AD applies to Bell Textron Canada Limited Model 206, 206A, 206A-1 (OH-58A), 206B, 206B-1, 206L, 206L-1, 206L-3, and 206L-4 helicopters, all serial numbers, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraphs (h) and (i) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Transport Canada AD CF-2020-15, dated May 13, 2020 (Transport Canada AD CF-2020-15).
Unsafe condition
This AD was prompted by reports of cracked or missing nuts installed on the tail rotor drive shaft (TRDS) disc pack (Thomas) couplings. The FAA is issuing this AD to prevent failure or loss of a nut on the TRDS Thomas couplings. The unsafe condition, if not addressed, could result in loss of the tail rotor and subsequent loss of control of the helicopter.
Affected ADs
This AD replaces AD 2021-26-08, Amendment 39-21867 (86 FR 72833, December 23, 2021) (AD 2021-26-08).
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1