# Proposed AD FAA-2004-18606: Bombardier Inc. Model (Otter) DHC-3 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2004-24-01
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 29, 2004, 69 FR 45293
- Comments due: September 21, 2004
- Became: [AD 2004-24-01](https://openairdocs.org/ad/2004-24-01)
- Docket: FAA-2004-18606 (https://www.regulations.gov/docket/FAA-2004-18606, where comments are filed)
- Project: 2004-CE-17-AD
- FR document: 04-17285
- Official PDF: https://openairdocs.org/files/sha256/1b/20/1b207255dc6c6c7d33b49859f648f3511b28ece3168f386e0686a56a1f9a3b1f (from https://www.govinfo.gov/content/pkg/FR-2004-07-29/pdf/04-17285.pdf)
- Federal Register: https://www.federalregister.gov/documents/2004/07/29/04-17285/airworthiness-directives-bombardier-inc-model-otter-dhc-3-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A53DFB9397C86D7686256EE0005160EB.0001
- Page: https://openairdocs.org/proposed/FAA-2004-18606

## Summary

The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier Inc. Model (Otter) DHC-3 airplanes that have been modified by 524085 BC, Ltd. Supplemental Type Certificate (STC) Number ST01243NY. This proposed AD would require you to replace the existing Viking Air Ltd. elevator servo tab assembly with a redesigned Viking Air Ltd. elevator servo tab assembly. This proposed AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Canada. There has been one failure of the elevator servo tab assembly. We are issuing this proposed AD to prevent the structural failure of the elevator servo tab. This failure could lead to loss of control of the airplane.

## Notices in this docket

- Jul 29, 2004: Notice of proposed rulemaking (NPRM). (first notice), FR document 04-17285, comments due Sep 21, 2004 (https://www.federalregister.gov/documents/2004/07/29/04-17285/airworthiness-directives-bombardier-inc-model-otter-dhc-3-airplanes)

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