airworthiness · Rule · Final rule. · Published 2021-05-19 · Effective 2021-06-23 · 86 FR 27028
Document
Document number
2021-10467
Federal Register citation
86 FR 27028
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2021-05-19
Effective date
2021-06-23
FAA docket
Docket No. FAA-2021-0101
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was prompted by a report that the inboard multi-function spoiler (MFS) surfaces failed to deploy, which was caused by missing notches on the piston seal of the MFS power control units (PCUs). This AD requires an inspection to determine if affected MFS PCUs are installed, and replacement of affected MFS PCUs. The FAA is issuing this AD to address the unsafe condition on these products.