Airworthiness directives › 2015-19-13
AD 2015-19-13 Airworthiness Directives; Bombardier, Inc. Airplanes
Models named: DHC-8-400, -401, -402. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers 4001 and 4003 through 4453 inclusive with an outboard spoiler power control unit (PCU) having part number 390700-1007 installed in the outboard position.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 6,000 flight hours or 36 months after the effective date of this AD, whichever occurs first: Replace the outboard spoiler PCUs with upgraded PCUs having re-designed seals, in accordance with the Accomplishment Instructions of Bombardier Service Bulletin 84-27-63, dated October 17, 2013.
Unsafe condition
This AD was prompted by reports of inadvertent deployment of a single outboard spoiler during flight. 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.
Affected ADs
None.
Read the original on the Federal Register →
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1