# Proposed AD FAA-2020-0913: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-07-03
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 14, 2020, 85 FR 64987
- Comments due: November 30, 2020
- Became: [AD 2021-07-03](https://openairdocs.org/ad/2021-07-03)
- Docket: FAA-2020-0913 (https://www.regulations.gov/docket/FAA-2020-0913, where comments are filed)
- Project: MCAI-2020-00971-T
- FR document: 2020-22665
- Official PDF: https://openairdocs.org/files/sha256/43/1f/431f0a43243f5a8d700ee35b3e9005e38bbc2b64412f61b5f1f88f354869537c (from https://www.govinfo.gov/content/pkg/FR-2020-10-14/pdf/2020-22665.pdf)
- Federal Register: https://www.federalregister.gov/documents/2020/10/14/2020-22665/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/04C8D3005B4F82EA862586010043846F.0001
- Page: https://openairdocs.org/proposed/FAA-2020-0913

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) 2015-05-03, which applies to certain MHI RJ Aviation ULC Model CL-600- 2B19 (Regional Jet Series 100 & 440) airplanes. AD 2015-05-03 requires revising the maintenance or inspection program, as applicable, to incorporate new or revised maintenance requirements and airworthiness limitations, and incorporating structural repairs and modifications to preclude widespread fatigue damage (WFD). Since the FAA issued AD 2015- 05-03, the FAA has determined that new or more restrictive airworthiness limitations are necessary, as well as the corresponding structural repairs and modifications to preclude WFD. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations and would require incorporating structural repairs and modifications to preclude WFD. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 14, 2020: Notice of proposed rulemaking (NPRM). (first notice), FR document 2020-22665, comments due Nov 30, 2020 (https://www.federalregister.gov/documents/2020/10/14/2020-22665/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

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