Airworthiness Directive · Amendment 39-16823 · Flight controls
The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes
This AD applies to The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 737-27-1282, Revision 1, dated June 14, 2010.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires inspecting to determine the clearance and any wire bundle damage between wire bundle W443 and the left forward rudder quadrant, followed by adjusting the minimum clearance between the wire bundle and the left forward rudder quadrant, and repairing any wire bundle damage. This AD was prompted by reports of contact between wire bundle W443 and the left forward rudder quadrant. We are issuing this AD to detect and correct contact between the wire bundle and the left forward rudder quadrant. Damage to the wire bundle from contact between the wire bundle and the left forward rudder quadrant could result in uncommanded stabilizer trim and autopilot disconnects due to shorted wires, potentially affecting the capability of the flightcrew during high work load and consequently reducing control of the airplane. Restricted movement of the rudder quadrant at full right rudder travel would reduce controllability 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.
Within 60 months after the effective date of this AD: Do a detailed inspection of wire bundle W443 for damage and measure for sufficient clearance, in accordance with Part 1 of the Work Instructions of Boeing Special Attention Service Bulletin 737-27-1282, Revision 1, dated June 14, 2010. If the wire bundle is undamaged, and sufficient clearance exists, no further action is required by this AD.
If the clearance of wire bundle W443 in the inspection required by paragraph (g) of this AD is found to be insufficient, before further flight, adjust the wire bundle clearance, in accordance with Part 2 of the Work Instructions of Boeing Special Attention Service Bulletin 737-27-1282, Revision 1, dated June 14, 2010.
(i) If wire bundle W443 is found to be damaged in the inspection required by paragraph (g) of this AD, before further flight, repair the damaged wire bundle and adjust the wire bundle clearance, in accordance with Part 3 of the Work Instructions of Boeing Special Attention Service Bulletin 737-27-1282, Revision 1, dated June 14, 2010.
Actions accomplished before the effective date of this AD in accordance with Boeing Special Attention Service Bulletin 737-27-1282, dated March 15, 2007, are considered acceptable for compliance with the corresponding action specified in this AD.
