Airworthiness directives › 2014-09-10
AD 2014-09-10 Airworthiness Directives; The Boeing Company Airplanes
Models named: 767-200, -300, -300F, -400ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin 767-27A0227, dated February 12, 2013. (2) Installation of Aviation Partners Boeing (APB) Supplemental Type Certificate (STC) ST01920SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/59027f43b9a7486e86257b1d006591ee/$FILE/ST01920SE.pdf ) does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which APB STC ST01920SE is installed, a “change in product” alternative method of compliance (AMOC) approval request is not necessary to comply with the requirements of 14 CFR 39.17.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as provided by paragraph (i) of this AD, at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 767-27A0227, dated February 12, 2013: Do a general visual inspection of both bearings at the TE flap support rib assembly in flap positions 1, 2, 7, and 8 to determine if the bearings have a roller retention feature; and do all applicable corrective actions; in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-27A0227, dated February 12, 2013. Do all applicable corrective actions before further flight. A review of airplane maintenance records is acceptable in lieu of this inspection if the roller retention feature of each affected bearing can be conclusively determined from that review.
Unsafe condition
This AD was prompted by reports of bearing damage at certain trailing edge (TE) flap support rib assemblies. We are issuing this AD to detect and correct damage to the TE flap support bearings, which could result in damage to the TE rotary actuators and consequent dual flap drive system disconnect in both TE flap rotary actuators, and a possible flap aerodynamic blowback with loss of controllability of the airplane.
Affected ADs
None.
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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