# Proposed AD FAA-2022-0284: Viking Air Limited (Type Certificate Previously Held by Bombardier Inc. and de Havilland, Inc.) Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2022-11-12
- Products: Viking Air
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: March 22, 2022, 87 FR 16123
- Comments due: May 6, 2022
- Became: [AD 2022-11-12](https://openairdocs.org/ad/2022-11-12)
- Docket: FAA-2022-0284 (https://www.regulations.gov/docket/FAA-2022-0284, where comments are filed)
- Project: MCAI-2021-01369-A
- FR document: 2022-05668
- Official PDF: https://openairdocs.org/files/sha256/a7/66/a766c880bae55030052453ef906b92797dd056a5b293d0513d832c163cfc5d59 (from https://www.govinfo.gov/content/pkg/FR-2022-03-22/pdf/2022-05668.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/03/22/2022-05668/airworthiness-directives-viking-air-limited-type-certificate-previously-held-by-bombardier-inc-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-05668-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0284

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for certain Viking Air Limited (type certificate previously held by Bombardier Inc. and de Havilland, Inc.) Model DHC-6-1, DHC-6-100, DHC- 6-200, DHC-6-300, and DHC-6-400 airplanes. This proposed AD results from mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI identifies the unsafe condition as binding of the rod end bearing connecting the lower fuel control unit (FCU) push rod assembly to the FCU power lever. This proposed AD would require performing tests, inspections, and lubrication of the FCU push rod assemblies, and replacing them with improved parts as necessary. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Mar 22, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-05668, comments due May 6, 2022 (https://www.federalregister.gov/documents/2022/03/22/2022-05668/airworthiness-directives-viking-air-limited-type-certificate-previously-held-by-bombardier-inc-and)

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