airworthiness · Rule · Final rule. · Published 2017-09-27 · Effective 2017-11-01 · 82 FR 44898
Document
Document number
2017-20213
Federal Register citation
82 FR 44898
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2017-09-27
Effective date
2017-11-01
FAA docket
Docket No. FAA-2015-8434
Abstract
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-401 and -402 airplanes. This AD was prompted by the discovery of cracking on two test spoiler power control unit (PCU) manifolds during testing by the manufacturer. This AD requires replacement of affected spoiler PCUs. We are issuing this AD to address the unsafe condition on these products.