AD 2022-11-17 Prompted By Reports Of Internal Corrosion On The Inboard Flaps

The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.

This AD was prompted by reports of internal corrosion on the inboard flaps found prior to regularly scheduled maintenance checks. This AD requires revising the existing maintenance or inspection program, as applicable, to incorporate a certain aircraft maintenance manual (AMM) task. The FAA is issuing this AD to address the unsafe condition on these products. This AD is effective July 22, 2022. 

Supplementary Information: Transport Canada Civil Aviation (TCCA), which is the aviation authority for Canada, has issued TCCA AD CF-2020-49R1, dated May 20, 2021 (TCCA AD CF-2020-49R1) (also referred to after this as the Mandatory Continuing Airworthiness Information, or the MCAI), to correct an unsafe condition for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. You may examine the MCAI in the AD docket at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-0832. 

The FAA issued a notice of proposed rulemaking (NPRM) to amend 14 CFR part 39 by adding an AD that would apply to certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. The NPRM published in the Federal Register on September 27, 2021 (86 FR 53246). The NPRM was prompted by reports of internal corrosion on the inboard flaps found prior to regularly scheduled maintenance checks. The NPRM proposed to require revising the existing maintenance or inspection program, as applicable, to incorporate a certain AMM task. The FAA is issuing this AD to address internal corrosion on the inboard flaps, which could result in reduced structural integrity, detachment of the flap, and consequent reduced controllability of the airplane. See the MCAI for additional background information.

FMI: www.regulations.gov