# Proposed AD FAA-2018-0635: Bombardier, Inc. Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-23-04
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: July 23, 2018, 83 FR 34800
- Comments due: September 6, 2018
- Became: [AD 2018-23-04](https://openairdocs.org/ad/2018-23-04)
- Docket: FAA-2018-0635 (https://www.regulations.gov/docket/FAA-2018-0635, where comments are filed)
- FR document: 2018-15659
- Official PDF: https://openairdocs.org/files/sha256/e9/39/e9391e24abd2b891b6fc4df0a386a7a7b27ac28ad67697c5436347f2edf72789 (from https://www.govinfo.gov/content/pkg/FR-2018-07-23/pdf/2018-15659.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/07/23/2018-15659/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/EFC7986A829FD99F862582D50047CAE1.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0635

## Summary

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-102, -103, and -106 airplanes; Model DHC-8-200 series airplanes; and Model DHC-8-300 series airplanes. This proposed AD was prompted by a report that a certain modification to the auto relight system is incompatible with a certain beta lockout system modification and could result in de-activation of the auto ignition feature of the No. 2 engine. This proposed AD would require an inspection of the auto ignition system and applicable rectification. We are proposing this AD to address the unsafe condition on these products.

## Notices in this docket

- Jul 23, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-15659, comments due Sep 6, 2018 (https://www.federalregister.gov/documents/2018/07/23/2018-15659/airworthiness-directives-bombardier-inc-airplanes)

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