Airworthiness directives › 2017-04-07
AD 2017-04-07 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB, -300 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 757-27A0154, dated July 22, 2016.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 51 months after the effective date of this AD: Replace each spoiler power control unit (PCU) with a new or changed PCU at spoiler positions 2, 3, and 4 on the left wing, and spoiler positions 9, 10, and 11 on the right wing, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 757-27A0154, dated July 22, 2016.
Unsafe condition
This AD was prompted by reports of single and multiple uncommanded spoiler panel extensions during flight when there was a hydraulic system failure. We are issuing this AD to prevent an uncommanded extension of multiple spoiler panels on one wing, in the event of a hydraulic system failure, which could result in the loss of control of the airplane.
Affected ADs
None.
Read the original on the Federal Register →
You just looked this one up by hand
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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