Airworthiness Directive · Amendment 39-17845 · Flight controls
The Boeing Company Airplanes
(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.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767 airplanes. This AD was prompted by reports of bearing damage at certain trailing edge (TE) flap support rib assemblies. This AD requires inspecting certain TE flap support rib assemblies to determine if the bearings have a roller retention feature, and performing corrective actions if necessary; and inspecting for bearing damage of each pair of removed bearings, and performing related investigative and corrective actions if necessary. We are issuing this AD to detect and correct damage to the TE flap support bearings, which could ultimately result in loss of controllability of the airplane.
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.
For each pair of bearings removed as required by paragraph (g) 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 for damage of the bearings, and do all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-27A0227, dated February 12, 2013. Do all applicable related investigative and corrective actions before further flight.
Where paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 767-27A0227, dated February 12, 2013, specifies a compliance time “after the original issue date of this service bulletin,” this AD requires compliance within the specified compliance time “after the effective date of this AD.”
