Airworthiness Directive · Amendment 39-15109 · Boeing Model 777 Airplanes
Boeing Model 777 Airplanes
Superseded. A later AD replaced this one: AD 2015-12-03. Comply with the one in force.
This AD applies to all Boeing Model 777-200, -200LR, -300, and -300ER series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all Boeing Model 777 airplanes. This AD requires repetitive measurements of the freeplay of the right and left elevators, rudder, and rudder tab, and related investigative and corrective actions if necessary. This AD also requires repetitive lubrication of the elevator, rudder, and rudder tab components. This AD results from reports of freeplay-induced vibration of unbalanced control surfaces. Excessive freeplay of control surfaces can cause unacceptable airframe vibration during flight. The potential for vibration of the control surface should be avoided because the point of transition from vibration to divergent flutter is unknown. We are issuing this AD to prevent flutter, which can cause damage to the control surface structure and consequent loss of control of the airplane.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
At the applicable times specified in Tables 1, 2, and 3 of paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, except as provided by paragraph (i) of this AD: Measure the freeplay of the right and left elevators, rudder, and rudder tab; and do all related investigative and corrective actions before further flight; by accomplishing all the actions specified in Parts 1, 3, and 5 of the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, as applicable. Repeat the measurements and related investigative and corrective actions thereafter at the interval specified in Table 1, 2, or 3 of the service bulletin, as applicable.
At the applicable times specified in Tables 1, 2, and 3 of paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, except as provided by paragraph (i) of this AD: Lubricate the elevator components, rudder components, and rudder tab components, by accomplishing all the actions specified in Parts 2, 4, and 6 of the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, as applicable. Repeat the lubrication thereafter at the interval specified in Table 1, 2, or 3 of the service bulletin, as applicable.
If a freeplay measurement of a specified part required by paragraph (f) of this AD and a lubrication of the same part required by paragraph (g) of this AD are due at the same time or will be accomplished during the same maintenance visit, the freeplay measurement and all related investigative and corrective actions must be done before the lubrication is accomplished.
(i) Where Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, recommends an initial compliance threshold of “Within 36 months after the date on this service bulletin” for Parts 1, 3, and 5 of the service bulletin, this AD requires an initial compliance threshold of “within 36 months after the effective date of this AD.” Where Boeing Special Attention Service Bulletin 777-27-0062, dated July 18, 2006, recommends an initial compliance threshold of “Within 16 months after the date on this service bulletin” for Parts 2, 4, and 6 of the service bulletin, this AD requires an initial compliance threshold of “within 16 months after the effective date 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
