Airworthiness Directive · Amendment 39-15274 · Boeing Model 767 Airplanes
Boeing Model 767 Airplanes
This AD applies to all Boeing Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category.
The FAA is superseding an existing airworthiness directive (AD) that applies to all Boeing Model 767 airplanes. That AD currently requires repetitive measurements of the rudder and elevator freeplay, repetitive lubrications of rudder and elevator components, and related investigative/corrective actions if necessary. This new AD instead requires revised repetitive measurements of the rudder freeplay and the elevator freeplay for each of the power control actuators (PCAs) that move the rudder and elevator, corrective and related investigative actions if necessary, and repetitive lubrications of the rudder and elevator components. For some airplanes, this AD also requires related concurrent actions. This AD results from reports of freeplay-induced vibration of the rudder and the elevator. 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 excessive vibration of the airframe during flight, which could result in 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.
The term “service bulletin,” as used in this AD, means the Accomplishment Instructions and Appendices A, B, and C of the following service bulletins, as applicable:
(1) For Model 767-200, -300, and -300F series airplanes: Boeing Special Attention Service Bulletin 767-27-0197, Revision 1, dated July 19, 2007; and
(2) For Model 767-400ER series airplanes: Boeing Special Attention Service Bulletin 767-27-0198, Revision 1, dated July 19, 2007.
At the latest of the compliance times specified in paragraphs (g)(1), (g)(2), and (g)(3) of this AD, as applicable: Measure the rudder and elevator freeplay. Repeat the measurement thereafter at intervals not to exceed 12,000 flight hours or 36 months, whichever occurs first. Do all actions required by this paragraph in accordance with the service bulletin.
(1) Within 14 months after the effective date of this AD.
(2) Within 36 months since the date of issuance of the original standard airworthiness certificate or the date of issuance of the original export certificate of airworthiness.
(3) For the elevator freeplay measurement: Within 12,000 flight hours or within 36 months after the last elevator freeplay inspection accomplished in accordance with Boeing Special Attention Service Bulletin 767-27-0197 or 767-27-0198, both dated October 27, 2005, as applicable, whichever occurs first.
If any measurement found during the measurement required by paragraph (g) of this AD exceeds any applicable limit specified in the service bulletin: Before further flight, do the applicable related investigative and corrective actions in accordance with the service bulletin.
(i) At the latest of the compliance times specified in paragraphs (i)(1), (i)(2), and (i)(3) of this AD, as applicable: Lubricate the rudder and elevator components specified in the service bulletin. Do all actions required by this paragraph in accordance with the service bulletin.
(1) Within 9 months after the effective date of this AD, or within 9 months since the date of issuance of the original standard airworthiness certificate or the date of issuance of the original export certificate of airworthiness; whichever occurs later.
(2) For airplanes on which BMS 3-33 grease is not already in use prior to the time the lubrication task is being accomplished: Within 3,000 flight hours or 9 months after the last lubrication accomplished in accordance with the service bulletin or Boeing Special Attention Service Bulletin 767-27-0197 or 767-27-0198, both dated October 27, 2005, whichever occurs first.
(3) For airplanes on which BMS 3-33 grease is already in use prior to the time the lubrication task is being accomplished: Within 6,000 flight hours or 18 months after the last lubrication accomplished in accordance with the service bulletin or Boeing Special Attention Service Bulletin 767-27-0197 or 767-27-0198, both dated October 27, 2005, whichever occurs first.
Repeat the lubrication required in paragraph (i) of this AD at the applicable interval specified in paragraph (j)(1) or (j)(2) of this AD.
(1) For airplanes on which BMS 3-33 grease is not already in use prior to the time the lubrication task is being accomplished: At intervals not to exceed 3,000 flight hours or 9 months, whichever occurs first.
(2) For airplanes on which BMS 3-33 grease is already in use prior to the time the lubrication task is being accomplished: At intervals not to exceed 6,000 flight hours or 18 months, whichever occurs first.
For airplanes specified in paragraphs (k)(1) and (k)(2) of this AD: Prior to or concurrently with the accomplishment of each elevator freeplay measurement specified in paragraph (g) of this AD, do all applicable actions required by AD 2001-04-09.
(1) Group 1, configuration 2, airplanes as identified in Boeing Special Attention Service Bulletin 767-27-0197, Revision 1, dated July 19, 2007.
(2) Group 1, configuration 1, airplanes as identified in Boeing Special Attention Service Bulletin 767-27-0198, Revision 1, dated July 19, 2007.
