Airworthiness Directive · Amendment 39-16547 · Equipment/furnishings
The Boeing Company Model 767 Airplanes
This AD applies to The Boeing Company Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category; as identified in Boeing Service Bulletin 767-25-0477, dated August 27, 2009.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD requires a detailed inspection of the entryway door movable ceiling panel for pin migration at either end of the hinge assembly and damage to the pin; a detailed inspection for correct crimp at both ends and damage to hinge stock; a detailed inspection of the ceiling area for any visible cosmetic and/or tie-rod chafing that could be caused by a migrated hinge pin; a detailed inspection for wire damage and/or breakage; and other specified and corrective actions if necessary. This AD results from reports of fault messages caused by improperly crimped hinge pins coming into contact with wires and causing damage. We are issuing this AD to detect and correct improperly crimped hinge pins, which could damage tie rods and wire bundles, causing shorts in many systems, including the spar fuel shut-off valve, oxygen mask deployment, and burned wires, which could be an ignition source in a hidden area 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 72 months after the effective date of this AD: Accomplish the inspections required by paragraphs (g)(1), (g)(2), (g)(3), and (g)(4) of this AD, and do all applicable corrective actions and part marking, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 767-25-0477, dated August 27, 2009. If, during the following inspections, any pin migration, improper crimping, tie-rod damage, or wire damage is found, do all applicable corrective actions, in accordance with Boeing Service Bulletin 767-25-0477, dated August 27, 2009, before further flight.
(1) A detailed inspection for pin migration at either end of the hinge assembly and to detect damage to the pin.
(2) A detailed inspection for correct crimp at both ends and to detect damage to hinge stock.
(3) A detailed inspection of the ceiling area for any visible cosmetic and tie-rod chafing that could be caused by a migrated hinge pin.
(4) A detailed inspection for wire damage and breakage.
