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AD 2024-18627

Published 2024-08-21 · 1 model · 315 US-registered tails affected · Federal Register

Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes Federal Register ↗

Abstract

The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a notice from a supplier reporting that torque wrenches used to install the air driven generator (ADG) downlock cam nut were out of calibration, which resulted in a higher torque level setting than required during the initial production installation of the affected cam nut. This AD requires replacement of the affected ADG locking cam screw and cam nut, as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

Applicability · by US fleet size

Federal Register text

Verbatim; the Federal Register publication is the legally binding document. Cite: 89 FR 67525. View on Federal Register ↗

[Federal Register Volume 89, Number 162 (Wednesday, August 21, 2024)] [Rules and Regulations] [Pages 67525-67527] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 2024-18627]

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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2024-1006; Project Identifier MCAI-2023-01222-T; Amendment 39-22781; AD 2024-13-07] RIN 2120-AA64

Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

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 MHI RJ Aviation ULC Model CL-600-2D15 (Regional Jet Series 705) and CL-600-2D24 (Regional Jet Series 900) airplanes. This AD was prompted by a notice from a supplier reporting that torque wrenches used to install the air driven generator (ADG) downlock cam nut were out of calibration, which resulted in a higher torque level setting than required during the initial production installation of the affected cam nut. This AD requires replacement of the affected ADG locking cam screw and cam nut, as specified in a Transport Canada AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.

DATES: This AD is effective September 25, 2024. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of September 25, 2024.