# Proposed AD FAA-2018-0072: Bombardier, Inc., Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2018-17-09
- Products: Bombardier
- Product type: Aircraft
- Action: Notice of proposed rulemaking (NPRM).
- Published: February 9, 2018, 83 FR 5746
- Comments due: March 26, 2018
- Became: [AD 2018-17-09](https://openairdocs.org/ad/2018-17-09)
- Docket: FAA-2018-0072 (https://www.regulations.gov/docket/FAA-2018-0072, where comments are filed)
- FR document: 2018-02198
- Official PDF: https://openairdocs.org/files/sha256/22/35/2235eadee16242f066437b24145adc88ed8052633b63ff8d1b7ff26950282fbf (from https://www.govinfo.gov/content/pkg/FR-2018-02-09/pdf/2018-02198.pdf)
- Federal Register: https://www.federalregister.gov/documents/2018/02/09/2018-02198/airworthiness-directives-bombardier-inc-airplanes
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3AB6DB7A0438EE088625822F005C3C8F.0001
- Page: https://openairdocs.org/proposed/FAA-2018-0072

## Summary

We propose to supersede Airworthiness Directive (AD) 2014-05- 28, for certain Bombardier, Inc., Model DHC-8-400 series airplanes. AD 2014-05-28 requires revising the maintenance or inspection program, as applicable. Since we issued AD 2014-05-28, we have determined that the interval from maintenance review board (MRB) task number 323100-202 should not be escalated, and that Certification Maintenance Requirements (CMR) task number 323100-102 should be applicable to all Model DHC-8-400 series airplanes, regardless of which main landing gear (MLG) up-lock assembly is installed. 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

- Feb 9, 2018: Notice of proposed rulemaking (NPRM). (first notice), FR document 2018-02198, comments due Mar 26, 2018 (https://www.federalregister.gov/documents/2018/02/09/2018-02198/airworthiness-directives-bombardier-inc-airplanes)

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