# Proposed AD FAA-2023-2137: De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2024-08-04
- Products: De Havilland Aircraft of Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 27, 2023, 88 FR 73775
- Comments due: December 11, 2023
- Became: [AD 2024-08-04](https://openairdocs.org/ad/2024-08-04)
- Docket: FAA-2023-2137 (https://www.regulations.gov/docket/FAA-2023-2137, where comments are filed)
- Project: MCAI-2022-01389-T
- FR document: 2023-23723
- Official PDF: https://openairdocs.org/files/sha256/d8/39/d8391ec7f0f147febdf761386969e80929a895d38187f72d0e1663aead97992f (from https://www.govinfo.gov/content/pkg/FR-2023-10-27/pdf/2023-23723.pdf)
- Federal Register: https://www.federalregister.gov/documents/2023/10/27/2023-23723/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2023-23723-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2023-2137

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all De Havilland Aircraft of Canada Limited Model DHC-8-401 and - 402 airplanes. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Oct 27, 2023: Notice of proposed rulemaking (NPRM). (first notice), FR document 2023-23723, comments due Dec 11, 2023 (https://www.federalregister.gov/documents/2023/10/27/2023-23723/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by)

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