Federal Register - October 8, 2021
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Source: Federal Register
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Federal Register / Vol. 86, No. 193 / Friday, October 8, 2021 / Proposed Rules
2 For helicopters with 9,000 or more total hours TIS, or with unknown total hours TIS, within 15 hours TIS or 7 days, whichever occurs first after the effective date of this AD, and thereafter at intervals not to exceed 1,000
hours TIS, remove each bolt, washer, and nut installed on the TR hub body from service and replace with airworthy parts and perform the actions in paragraph g1ii of this AD.
3 For helicopters with less than 9,000
total hours TIS, within 1,000 hours TIS or before accumulating 9,000 total hours TIS, whichever occurs first after the effective date of this AD, and thereafter at intervals not to
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exceed 1,000 hours TIS, remove each bolt, washer, and nut installed on the TR hub body from service and replace with airworthy parts and perform the actions in paragraph g1ii of this AD.
4 As of the effective date of this AD, do not install TR hub body P/N C642A0100103
on any helicopter, unless the actions of paragraph g1 of this AD have been accomplished.
h Special Flight Permits A special flight permit may be permitted provided that there are no passengers onboard.
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i Alternative Methods of Compliance AMOCs 1 The Manager, International Validation Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the International Validation Branch, send it to the attention of the person identified in paragraph j1 of this AD.
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