Airworthiness Directive · Amendment 39-15630 · Boeing Model 777-200 Series Airplanes
Boeing Model 777-200 Series Airplanes
This AD applies to Boeing Model 777-200 series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 777-53A0051, dated November 8, 2007.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 777-200 series airplanes. This AD requires repetitive inspections for any wrinkle in certain external skin panels, and for cracking at the fuselage bulkhead shear tie end fastener locations at certain stations of Section 48 of the fuselage; and doing related investigative and corrective actions if necessary. This AD results from a report of cracks found in the external skin on the left and right sides of the Section 48 panel of the fuselage on two airplanes with skin wrinkles found at two of the external crack locations. We are issuing this AD to detect and correct wrinkles and cracks in certain external skin panels of Section 48, which could join together and result in reduced structural integrity of support structure for the vertical and horizontal stabilizers and inability of the airplane to sustain limit loads.
Comply with this AD within the compliance times specified, unless already done.
At the applicable compliance times specified in paragraph 1.E., “Compliance” of Boeing Alert Service Bulletin 777-53A0051, dated November 8, 2007; except as provided by paragraph (g) of this AD: Do the applicable inspections for any wrinkle of the external skin and for cracking at the fuselage bulkhead shear tie end fastener locations at Stations 2195.75, 2221.65, and 2245.70 of the Section 48 panel of the fuselage, between stringers 5 and 10 on the left and right sides; and do all the applicable investigative and corrective actions; by doing all of the applicable actions in accordance with the Accomplishment Instructions of the service bulletin, except as provided by paragraph (h) of this AD. Do all applicable investigative and corrective actions before further flight. Repeat the applicable inspections thereafter at the applicable intervals specified in paragraph 1.E. of the service bulletin.
Where Boeing Alert Service Bulletin 777-53A0051, dated November 8, 2007, specifies counting the compliance time from “* * * the date on this service bulletin,” this AD requires counting the compliance time from the effective date of this AD.
If any damage beyond the repair limits specified in Boeing Alert Service Bulletin 777-53A0051, dated November 8, 2007, is found during any inspection required by this AD, and the service bulletin specifies to contact Boeing for appropriate action: Before further flight, repair the crack using a method approved in accordance with the procedures specified in paragraph (i) of this AD.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
