# Proposed AD FAA-2022-0099: 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 2022-10-07
- Products: Viking Air
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 11, 2022, 87 FR 7965
- Comments due: March 28, 2022
- Became: [AD 2022-10-07](https://openairdocs.org/ad/2022-10-07)
- Docket: FAA-2022-0099 (https://www.regulations.gov/docket/FAA-2022-0099, where comments are filed)
- Project: 2019-CE-019-AD
- FR document: 2022-02888
- Official PDF: https://openairdocs.org/files/sha256/42/3f/423fb25493153a5c32273406ccb32ede23ffe6caf66ab2e1c3a75e42166cd647 (from https://www.govinfo.gov/content/pkg/FR-2022-02-11/pdf/2022-02888.pdf)
- Federal Register: https://www.federalregister.gov/documents/2022/02/11/2022-02888/airworthiness-directives-viking-air-limited-type-certificate-previously-held-by-bombardier-inc-and
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FR-ADNPRM-2022-02888-00000000000.0001
- Page: https://openairdocs.org/proposed/FAA-2022-0099

## Summary

The FAA proposes to supersede Airworthiness Directive (AD) AD 89-24-06 R1, which applies to all Boeing of Canada, Ltd. and de Havilland (now Viking Air Limited) Model DHC-6-1, DHC-6-100, DHC-6-200, and DHC-6-300 airplanes. This AD requires repetitively inspecting the elevator quadrant for damage and taking corrective action as necessary. Since the FAA issued AD 89-24-06 R1, the aviation authority for Canada revised its mandatory continuing airworthiness information (MCAI) to correct this unsafe condition on these products. The MCAI identifies the unsafe condition as damage to the flight control system. This proposed AD would retain the actions of AD 89-24-06 R1, extend the compliance time intervals for the repetitive inspections, add the Model DHC-6-400 airplane to the applicability, and add a fluorescent penetrant inspection requirement. The FAA is proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Feb 11, 2022: Notice of proposed rulemaking (NPRM). (first notice), FR document 2022-02888, comments due Mar 28, 2022 (https://www.federalregister.gov/documents/2022/02/11/2022-02888/airworthiness-directives-viking-air-limited-type-certificate-previously-held-by-bombardier-inc-and)

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