AD 2021-01-01 Requires Verifying That The Affected Components Are Installed On The Airplane...

The FAA is adopting a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes.

This AD was prompted by evidence that a revised structural life limit of some components of the nose landing gear (NLG) and/or main landing gear (MLG) was not implemented during repair. This AD requires verifying that the affected components are installed on the airplane, revising the structural life limits in the existing structural deviation inspection requirements (SDIR) airplane document, and replacing affected components if necessary. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective March 30, 2021.

Supplementary Information: Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued Canadian AD CF-2020-09, dated April 7, 2020 (also referred to as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2020-0691.

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. The NPRM published in the Federal Register on October 5, 2020 (85 FR 62626). The NPRM was prompted by evidence that a revised structural life limit of some components of the NLG and/or MLG was not implemented during repair. The NPRM proposed to require verifying that the affected components are installed on the airplane, revising the structural life limits in the existing SDIR airplane document, and replacing affected components if necessary. The FAA is issuing this AD to address structural life limits that are lower than the life limit published in the Maintenance Requirements Manual (MRM), Part 2. This condition, if not corrected, could lead to the collapse of the affected NLG and/or MLG, possibly resulting in airplane damage and injury to the occupants. See the MCAI for additional background information.

FMI: www.regulations.gov