# Proposed AD FAA-2025-0336: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2025-11-11
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 5, 2025, 90 FR 11239
- Comments due: April 21, 2025
- Became: [AD 2025-11-11](https://openairdocs.org/ad/2025-11-11)
- Docket: FAA-2025-0336 (https://www.regulations.gov/docket/FAA-2025-0336, where comments are filed)
- Project: MCAI-2022-00194-T
- FR document: 2025-03526
- Official PDF: https://openairdocs.org/files/sha256/bb/d6/bbd6503f2e87c72d50e9ed8ed970e23a955b0bc4154b9b478609c4b0b1c8506a (from https://www.govinfo.gov/content/pkg/FR-2025-03-05/pdf/2025-03526.pdf)
- Federal Register: https://www.federalregister.gov/documents/2025/03/05/2025-03526/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2025-03526-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2025-0336

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701, and 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 or more restrictive aircraft maintenance manual (AMM) tasks are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive AMM tasks, as specified in a Transport Canada AD, which is proposed for incorporation by reference (IBR). The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 5, 2025: Notice of proposed rulemaking (NPRM). (first notice), FR document 2025-03526, comments due Apr 21, 2025 (https://www.federalregister.gov/documents/2025/03/05/2025-03526/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.