Airworthiness directives › 2021-19-08
AD 2021-19-08 Airworthiness Directives; Robinson Helicopter Company Helicopters
Makes named: robinson. Models named: R44, R44 II. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Robinson Helicopter Company Model R44 and R44 II helicopters, certificated in any category, with a tail rotor blade (blade) part number (P/N) C029-3 with serial number (S/N) 9410 through 9909 inclusive, installed.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Before further flight and thereafter before each flight, check each blade at the leading edge for a crack. This action may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a)(1) through (4) and 14 CFR 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439. (2) If there is any crack, before further flight, remove the blade from service. (3) As of the effective date of this AD, do not install a blade identified in paragraph (c) of this AD on any helicopter. (4) Within three months after the effective date of this AD, remove from service any blade identified in paragraph (c) of this AD.
Unsafe condition
This AD was prompted by reports of cracked blades. The FAA is issuing this AD to detect and prevent cracks in the affected blades. The unsafe condition, if not addressed, could result in reduced controllability and subsequent loss of control of the helicopter.
Affected ADs
None.
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