Summary
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.
Directive Details
AD Number
FAA-2015-0494
Document Number
2015-24252
Type
Rule
Publication Date
September 29, 2015
Effective Date
November 3, 2015
Affected Manufacturer
Bombardier, Inc.
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2015-0494
Topics
Official Documents
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