Airworthiness Directives; Bombardier, Inc. Airplanes
airworthiness · Rule · Final rule. · Published 2015-09-29 · Effective 2015-11-03 · 80 FR 58344
Document
Document number
2015-24252
Federal Register citation
80 FR 58344
Type
Rule
Action
Final rule.
Category
airworthiness
Publication date
2015-09-29
Effective date
2015-11-03
FAA docket
Docket No. FAA-2015-0494
Abstract
We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of inadvertent deployment of a single outboard spoiler during flight. This AD requires replacement of the power control units (PCUs) for the outboard spoilers with upgraded PCUs. We are issuing this AD to prevent leakage of the piston head seal and piston rod seals of the outboard spoiler PCUs, which could result in inadvertent spoiler deployment and reduced controllability of the airplane.