# Proposed AD FAA-2018-0449: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-20-18
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: May 25, 2018, 83 FR 24248
- Comments due: July 9, 2018
- Became: [AD 2018-20-18](https://openairdocs.org/ad/2018-20-18)
- Docket: FAA-2018-0449 (https://www.regulations.gov/docket/FAA-2018-0449, where comments are filed)
- FR document: 2018-11141
- Official PDF: https://openairdocs.org/files/sha256/b5/4c/b54c77a3e786eee742649a76536f814bcb121333676a610ec9cdbdd157df6289 (from https://www.govinfo.gov/content/pkg/FR-2018-05-25/pdf/2018-11141.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/05/25/2018-11141/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/51CB1976AD2C4F13862582980051140E.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0449

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-400 series airplanes. This proposed AD was prompted by a report of uncommanded deployment of the ground spoilers when the power levers were advanced for takeoff, which was caused by faulty switches in the power lever module. This proposed AD would require revising the maintenance or inspection program, as applicable. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- May 25, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-11141, comments due Jul 9, 2018 (https://www.federalregister.gov/documents/2018/05/25/2018-11141/airworthiness-directives-bombardier-inc-airplanes)

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