Airworthiness Directive · Amendment 39-14669 · Boeing Model 727 Airplanes
Boeing Model 727 Airplanes
This AD applies to Boeing Model 727, 727C, 727-100, 727-100C, 727-200, and 727-200F series airplanes, certificated in any category; as identified in Boeing Special Attention Service Bulletin 727-27-0234, dated November 10, 2005.
The FAA is adopting a new airworthiness directive (AD) for certain Boeing Model 727 airplanes. This AD requires repetitive measurements of the freeplay of the left and right outboard aileron balance tabs and of the upper and lower rudder tabs, and related investigative/corrective actions if necessary. This AD also requires repetitive lubrication of the hinge bearings and rod end bearings of the outboard aileron balance tabs. This AD results from reports of freeplay-induced vibration of the outboard aileron balance tabs and rudder tabs. We are issuing this AD to prevent excessive vibration of the airframe during flight, which could result in divergent flutter and 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.
Except as provided by paragraph (h) of this AD, at the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 727-27-0234, dated November 10, 2005, do the actions specified in paragraph (g) of this AD. Where the service bulletin specifies a compliance time “from the initial release of this service bulletin,” this AD requires compliance within the applicable compliance time after the effective date of this AD.
At the applicable times specified in paragraph (f) of this AD, do the actions specified in paragraphs (g)(1) and (g)(2) of this AD in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 727-27-0234, dated November 10, 2005.
(1) Measure the freeplay of the left and right outboard aileron balance tabs and of the upper and lower rudder tabs, and do applicable related investigative and corrective actions if necessary.
(2) Lubricate the hinge bearings and rod end bearings of the outboard aileron balance tabs.
If a freeplay measurement required by paragraph (g)(1) of this AD and a lubrication cycle required by paragraph (g)(2) of this AD are due at the same time or will be done during the same maintenance visit, the freeplay measurement and applicable related investigative and corrective actions must be done before the lubrication.
