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Airworthiness directives › 2021-20-02

AD 2021-20-02 Airworthiness Directives; Bell Textron Inc. (Type Certificate Previously Held by Bell Helicopter Textron Inc.) Helicopters

2021-10-28
2021-09-23
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Airframe
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Models named: 205B. Read the applicability below — it usually turns on serial or part numbers too.

Applicability*9

This AD applies to Bell Textron Inc. (type certificate previously held by Bell Helicopter Textron Inc.) Model 205B helicopters, certificated in any category, with main rotor grip assembly (grip assembly) part number (P/N) 204-011-121-005, P/N 204-011-121-113, or P/N 204-011-121-117 installed.

Compliance

Comply with this AD within the compliance times specified, unless already done.

Required actions

(1) Before further flight after the effective date of this AD, determine the total hours time-in-service (TIS) of any grip assembly having P/N 204-011-121-005, P/N 204-011-121-113, or P/N 204-011-121-117. Remove from service any grip assembly that has accumulated or exceeded 9,000 total hours TIS. For each grip assembly that has accumulated less than 9,000 total hours TIS, do the following: (i) Create a component history card or equivalent record to establish a life limit of 9,000 total hours TIS. (ii) Thereafter, remove from service any grip assembly before it accumulates 9,000 total hours TIS. (2) Thereafter, no alternative life limits may be approved for any grip assembly P/N 204-011-121-005, P/N 204-011-121-113, or P/N 204-011-121-117. (3) As of the effective date of this AD, do not install any grip assembly having P/N 204-011-121-005, P/N 204-011-121-113, or P/N 204-011-121-117 on any Model 205B helicopter unless the life limit is established in accordance with this AD.

Unsafe condition

This AD was prompted by a notification of certain parts needing a life limit. The FAA is issuing this AD to prevent a grip assembly remaining in service beyond its fatigue life. The unsafe condition, if not addressed, could result in fatigue and failure of the grip assembly and loss of helicopter control.

Affected ADs

None.

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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