# Proposed AD FAA-2022-0155: MHI RJ Aviation ULC (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-12-03
- Products: MHI RJ Aviation ULC
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: April 1, 2022, 87 FR 19026
- Comments due: May 16, 2022
- Became: [AD 2022-12-03](https://openairdocs.org/ad/2022-12-03)
- Docket: FAA-2022-0155 (https://www.regulations.gov/docket/FAA-2022-0155, where comments are filed)
- Project: MCAI-2021-00585-T
- FR document: 2022-06771
- Official PDF: https://openairdocs.org/files/sha256/11/5b/115b334e67d6d9058756623a298542f808ca5e51a259b5d01725bf73238269ff (from https://www.govinfo.gov/content/pkg/FR-2022-04-01/pdf/2022-06771.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/04/01/2022-06771/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-06771-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0155

## 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; Model CL-600-2C10 (Regional Jet Series 700, 701 & 702) airplanes; Model CL-600-2C11 (Regional Jet Series 550) airplanes; Model CL-600-2D15 (Regional Jet Series 705) airplanes; Model CL-600- 2D24 (Regional Jet Series 900) airplanes; and Model CL-600-2E25 (Regional Jet Series 1000) airplanes. This proposed AD was prompted by reports of displayed headings changing from MAG to TRU with no pilot action, which may result in misleading heading information on both primary function displays (PFDs) and multi-function displays (MFDs), and misleading course information on flight management systems (FMS). This proposed AD would require amending the existing airplane flight manual (AFM) to provide the flightcrew with updated procedures for accurate heading and course information. 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 2022-06771, comments due May 16, 2022 (https://www.federalregister.gov/documents/2022/04/01/2022-06771/airworthiness-directives-mhi-rj-aviation-ulc-type-certificate-previously-held-by-bombardier-inc)

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