AD 2024-22929

Published 2024-10-04 · 7 models · 152 US-registered tails affected · Federal Register

Airworthiness Directives; Bell Textron Inc. Helicopters Federal Register ↗

Abstract

The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc. Model 212, 412, 412CF, and 412EP helicopters. This AD was prompted by reports of cracked tail boom attachment barrel nuts (barrel nuts). This AD requires replacing all steel alloy barrel nuts with nickel alloy barrel nuts, replacing or inspecting other tail boom attachment point hardware, repetitively inspecting torque, and repetitively replacing tail boom attachment bolts (bolts). This AD also prohibits installing steel alloy barrel nuts. The FAA is issuing this AD to address the unsafe condition on these products.

Applicability · by US fleet size

BELL 212 TCDS H4SW 54 tails
TEXTRON AVIATION 680 TCDS T00012WI 41 tails
BELL 412EP TCDS H4SW 24 tails
BELL 222 TCDS H9SW 15 tails
BELL 412 TCDS H4SW 12 tails
BELL HELICOPTER TEXTRON 212 TCDS H4SW 5 tails
UNKNOWN UNKNOWN 1 tails

Federal Register text

Verbatim; the Federal Register publication is the legally binding document. Cite: 89 FR 80724. View on Federal Register ↗

[Federal Register Volume 89, Number 193 (Friday, October 4, 2024)] [Rules and Regulations] [Pages 80724-80729] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2024-22929]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-0768; Project Identifier AD-2022-00504-R; Amendment 39-22825; AD 2024-16-19] RIN 2120-AA64

Airworthiness Directives; Bell Textron Inc. Helicopters

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain Bell Textron Inc. Model 212, 412, 412CF, and 412EP helicopters. This AD was prompted by reports of cracked tail boom attachment barrel nuts (barrel nuts). This AD requires replacing all steel alloy barrel nuts with nickel alloy barrel nuts, replacing or inspecting other tail boom attachment point hardware, repetitively inspecting torque, and repetitively replacing tail boom attachment bolts (bolts). This AD also prohibits installing steel alloy barrel nuts. The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective November 8, 2024. The Director of the Federal Register approved the incorporation by reference of certain publications listed in this AD as of November 8, 2024.