# Proposed AD FAA-2022-0388: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-13-02
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 1, 2022, 87 FR 19032
- Comments due: May 16, 2022
- Became: [AD 2022-13-02](https://openairdocs.org/ad/2022-13-02)
- Docket: FAA-2022-0388 (https://www.regulations.gov/docket/FAA-2022-0388, where comments are filed)
- Project: MCAI-2020-01604-T
- FR document: 2022-06769
- Official PDF: https://openairdocs.org/files/sha256/f3/41/f341a8dbe17fa3c75b4004847e94cd8317ab1261aa5f1316bd32e5ed2cb7a531 (from https://www.govinfo.gov/content/pkg/FR-2022-04-01/pdf/2022-06769.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/04/01/2022-06769/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-06769-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0388

## 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 reports of the failure of certain primary ejector fuel feed flexible hoses, which may have a thinner liner than specified by design requirements, and are therefore more susceptible to cracking. This proposed AD would require replacing the hoses. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Apr 1, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-06769, comments due May 16, 2022 (https://www.federalregister.gov/documents/2022/04/01/2022-06769/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

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