# Proposed AD FAA-2021-0382: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2021-22-24
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 27, 2021, 86 FR 28501
- Comments due: July 12, 2021
- Became: [AD 2021-22-24](https://openairdocs.org/ad/2021-22-24)
- Docket: FAA-2021-0382 (https://www.regulations.gov/docket/FAA-2021-0382, where comments are filed)
- Project: MCAI-2021-00382-T
- FR document: 2021-11137
- Official PDF: https://openairdocs.org/files/sha256/e6/36/e6363a017b237ab0af130536bd1d202c28d7488764e73734f6b47e76a0c31e8a (from https://www.govinfo.gov/content/pkg/FR-2021-05-27/pdf/2021-11137.pdf)
- Federal Register: https://www.federalregister.gov/documents/2021/05/27/2021-11137/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/50AE00C15E01C67D862586E200745FD3.0001
- Page: https://openairdocs.org/proposed/FAA-2021-0382

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701 & 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by a determination that new airworthiness limitations for structural inspections and safe life components are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 27, 2021: Notice of proposed rulemaking (NPRM). (first notice), FR document 2021-11137, comments due Jul 12, 2021 (https://www.federalregister.gov/documents/2021/05/27/2021-11137/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

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