Rotors Flight Controls — Collective Lever to Swashplate Outer Ring Fouling
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of affected Bell 505 helicopters must inspect the collective lever control system within 10 flight hours or 30 days from November 23, 2022, whichever occurs first. If clearance parameters exceed tolerance, adjustments to the collective lever and cyclic control system must be made before the next flight. Compliance with Bell's Alert Service Bulletin 505-22-33, as approved by Transport Canada, is mandatory.
Summary
The Canadian Airworthiness Directive CF-2022-62 addresses a potential interference issue between the collective lever and the swashplate outer ring on Bell Textron Canada Limited Model 505 helicopters, specifically serial numbers 65011 to 65412 and others listed. This directive mandates inspections and adjustments to ensure safe clearance between these components to prevent flight control malfunctions. It applies to the main rotor flight control system and aims to maintain helicopter operational safety.
What changed
CF-2022-62 introduces a mandatory inspection and adjustment procedure based on Bell's Alert Service Bulletin 505-22-33 to verify and correct the clearance between the collective lever and the swashplate outer ring. This is a new regulatory requirement that enforces compliance with the service bulletin to prevent possible flight control interference. The directive is a provisional measure pending further actions.
Why it matters
This directive is critical for operators and maintenance teams as it addresses a safety risk that could lead to loss of helicopter control if not corrected. Compliance ensures the integrity of the main rotor flight control system, thereby protecting crew and passengers. It also helps maintenance organizations avoid operational disruptions and regulatory penalties by meeting Transport Canada's airworthiness requirements.
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