# Proposed AD FAA-2018-0453: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2019-18-05
- Products: Bombardier
- Product type: Aircraft
- Action: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period.
- Published: June 7, 2019, 84 FR 26601
- Comments due: July 22, 2019
- Became: [AD 2019-18-05](https://openairdocs.org/ad/2019-18-05)
- Docket: FAA-2018-0453 (https://www.regulations.gov/docket/FAA-2018-0453, where comments are filed)
- FR document: 2019-11879
- Official PDF: https://openairdocs.org/files/sha256/30/1f/301fcc37271b12c58115923819087b1e3535968f028a2548026fe4ad0d991e8e (from https://www.govinfo.gov/content/pkg/FR-2019-06-07/pdf/2019-11879.pdf)
- Federal Register: https://www.federalregister.gov/documents/2019/06/07/2019-11879/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/9FAEAF82A94CC1728625841400546759.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0453

## Summary

We are revising an earlier proposal for certain Bombardier, Inc., Model DHC-8-400 series airplanes. This action revises the notice of proposed rulemaking (NPRM) by adding a requirement to replace the lower lock link of the nose landing gear (NLG), which would terminate the repetitive inspections proposed in the NPRM. This action also reduces the applicability in the NPRM. We are proposing this airworthiness directive (AD) to address the unsafe condition on these products. Since these actions would impose an additional burden over those in the NPRM, we are reopening the comment period to allow the public the chance to comment on these changes.

## Notices in this docket

- May 30, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-11430, comments due Jul 16, 2018 (https://www.federalregister.gov/documents/2018/05/30/2018-11430/airworthiness-directives-bombardier-inc-airplanes)
- Jun 7, 2019: Supplemental notice of proposed rulemaking (SNPRM); reopening of comment period., FR document 2019-11879, comments due Jul 22, 2019 (https://www.federalregister.gov/documents/2019/06/07/2019-11879/airworthiness-directives-bombardier-inc-airplanes)

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