# Proposed AD FAA-2022-0993: De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-25-06
- Products: De Havilland Aircraft of Canada
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: August 12, 2022, 87 FR 49776
- Comments due: September 26, 2022
- Became: [AD 2022-25-06](https://openairdocs.org/ad/2022-25-06)
- Docket: FAA-2022-0993 (https://www.regulations.gov/docket/FAA-2022-0993, where comments are filed)
- Project: MCAI-2022-00295-T
- FR document: 2022-17120
- Official PDF: https://openairdocs.org/files/sha256/cf/bd/cfbdbbd40b1119f6baee0a5a1764aaef81f1816ab1cd9827661c5e3b16b1823a (from https://www.govinfo.gov/content/pkg/FR-2022-08-12/pdf/2022-17120.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/08/12/2022-17120/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-17120-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0993

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-402 airplanes. This proposed AD was prompted by an investigation that found that the actual operating temperatures within the integrated flight cabinet (IFC) were significantly higher than anticipated during certification. This proposed AD would require a design change to improve the integrated flight cabinet (IFC) cooling capacity. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Aug 12, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-17120, comments due Sep 26, 2022 (https://www.federalregister.gov/documents/2022/08/12/2022-17120/airworthiness-directives-de-havilland-aircraft-of-canada-limited-type-certificate-previously-held-by)

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