Airworthiness directives › 2025-22-03
AD 2025-22-03 Airworthiness Directives; Bell Textron Canada Limited Helicopters
Models named: 505. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bell Textron Canada Limited Model 505 helicopters, certificated in any category, as identified in Transport Canada AD CF-2025-35, dated July 4, 2025 (Transport Canada AD CF-2025-35).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, Transport Canada AD CF-2025-35. (2) For this AD, the owner/operator (pilot) holding at least a private pilot certificate may revise the existing rotorcraft flight manual (RFM) for the helicopter by inserting the applicable flight manual supplement into the RFM and must enter compliance into the helicopter maintenance records in accordance with 14 CFR 43.9(a) and 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
Unsafe condition
This AD was prompted by deformation and improper pin engagement in the knuckles of the door hinge on the aft movable ballast box assembly, which could allow the ballast weights to escape the ballast box and strike the tail rotor assembly. The FAA is issuing this AD to prevent damage and departure of tail rotor blades, loss of tail rotor thrust, and severe vibrations. The unsafe condition, if not addressed, could result in loss of control of the helicopter.
Affected ADs
This AD replaces AD 2025-06-51, Amendment 39-23007 (90 FR 15310, April 10, 2025).
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