Airworthiness Directive · Amendment 39-17924 · Engine exhaust
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 777-200 and -300 series airplanes, certificated in any category, equipped with Rolls-Royce engines.
We are superseding Airworthiness Directive (AD) 2006-26-06 for certain The Boeing Company Model 777-200 and -300 series airplanes equipped with Rolls-Royce engines. AD 2006-26-06 required repetitive inspections to detect cracks of the outer V-blades of the thrust reverser, and corrective action if necessary. AD 2006-26-06 also provided for an optional terminating action for the repetitive inspections. This new AD adds, for airplanes on which the optional terminating action is done, repetitive inspections for cracking in the outer V-blade fittings of the hinge beam and latch beam ends of each thrust reverser half, and replacement of an affected thrust reverser half if necessary. This new AD also adds airplanes to the applicability. This AD was prompted by reports of cracked outer V- blade fittings at the hinge beam end of Rolls-Royce engine thrust reversers, on airplanes on which the optional terminating action was done. We are issuing this AD to prevent separation of a thrust reverser from the airplane during normal reverse thrust or during a refused takeoff, which could result in unexpected thrust asymmetry and a possible runway excursion.
This paragraph restates the requirements of paragraph (f) of AD 2006-26-06, Amendment 39-14864 (71 FR 77586, December 27, 2006), with new service information. For Group 1, Configuration 1, airplanes, as identified in Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012: Do the detailed inspections to detect cracks in the outer V-blade of the thrust reversers. Do the inspections in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0064, Revision 1, dated November 30, 2006; or Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012. Do the inspections at the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-78-0064, Revision 1, dated November 30, 2006; except where Boeing Special Attention Service Bulletin 777-78-0064, Revision 1, dated November 30, 2006, specifies an initial compliance time after the date on that service bulletin, this AD requires compliance within the specified time after January 11, 2007 (the effective date of AD 2006-26-06). Do applicable corrective actions before further flight, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0064, Revision 1, dated November 30, 2006; or Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012; or paragraph (m) of this AD. As of the effective date of this AD, use only Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012, to accomplish the actions required by this paragraph.
This paragraph restates the credit provisions for the actions specified in paragraph (g) of AD 2006-26-06, Amendment 39-14864 (71 FR 77586, December 27, 2006). For Group 1, Configuration 1, airplanes as identified in Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012. This paragraph provides credit for the actions specified in paragraph (g) of this AD, if those actions were performed before January 11, 2007 (the effective date of AD 2006-26-06), using Boeing Special Attention Service Bulletin 777-78-0064, dated August 7, 2006.
This paragraph restates the optional terminating action specified in paragraph (i) of AD 2006-26-06, Amendment 39-14864 (71 FR 77586, December 27, 2006), with new service information. Accomplishment of the actions specified in paragraph (i)(1) or (i)(2) of this AD terminates the requirements of paragraph (g) of this AD. For airplanes on which this terminating action has been accomplished, operators must do the inspection required by paragraph (j) of this AD.
(1) Accomplishment of the applicable inspections and related investigative/corrective actions before the effective date of this AD, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0061, dated July 6, 2006; except, where Boeing Special Attention Service Bulletin 777-78-0061, dated July 6, 2006, specifies to contact the manufacturer for appropriate action, repair before further flight using a method approved in accordance with the procedures specified in paragraph (m) of this AD.
(2) Accomplishment of the applicable modification, inspections, and related investigative/corrective actions, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0061, Revision 1, dated August 28, 2007; except, where Boeing Special Attention Service Bulletin 777-78-0061, Revision 1, dated August 28, 2007, specifies to contact the manufacturer for appropriate action, repair before further flight using a method approved in accordance with the procedures specified in paragraph (m) of this AD.
For airplanes in Group 1, Configuration 2, and Groups 2 and 3, as identified in Boeing Special Attention Service Bulletin 777-78- 0064, Revision 2, dated June 14, 2012: At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012, except as provided by paragraph (k) of this AD, do a detailed inspection for cracking of the outer V-blade fittings at the latch beam end and hinge beam end of each thrust reverser half, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012.
(1) If no cracking is found, repeat the inspections thereafter at the times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012.
(2) If any cracking is found, before further flight, replace the affected thrust reverser half with a serviceable thrust reverser half, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012. Repeat the inspections thereafter at the times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012.
Where Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012, specifies an initial compliance time “after the date on Revision 2 of this service bulletin,” this AD requires compliance within the specified time after the effective date of this AD.
Although Boeing Special Attention Service Bulletin 777-78-0064, Revision 2, dated June 14, 2012, specifies to submit certain information to the manufacturer, this AD does not include that requirement.
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
