# Proposed AD FAA-2020-0691: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-01-01
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 5, 2020, 85 FR 62626
- Comments due: November 19, 2020
- Became: [AD 2021-01-01](https://openairdocs.org/ad/2021-01-01)
- Docket: FAA-2020-0691 (https://www.regulations.gov/docket/FAA-2020-0691, where comments are filed)
- FR document: 2020-21882
- Official PDF: https://openairdocs.org/files/sha256/05/26/05268a7504fefacc4be4120e15df66629c36d7db72be0d96edcfac765d6575e4 (from https://www.govinfo.gov/content/pkg/FR-2020-10-05/pdf/2020-21882.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/10/05/2020-21882/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/349658E5AC16B642862585F8003F6140.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0691

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2B19 (Regional Jet Series 100 & 440) airplanes. This proposed 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 proposed AD would require verifying that the affected components are installed on the airplane, revising the structural life limits in the structural deviation inspection requirements (SDIR) airplane document, and replacing affected components if necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 5, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-21882, comments due Nov 19, 2020 (https://www.federalregister.gov/documents/2020/10/05/2020-21882/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

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