Airworthiness Directive · Amendment 39-16066 · Fuel
Boeing Model 767-200, -300, -300F, and -400ER Series Airplanes
This AD applies to Boeing Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category; as identified in Boeing Alert Service Bulletin 767-28A0090, dated July 3, 2008.
We are adopting a new airworthiness directive (AD) for certain Boeing Model 767-200, -300, -300F, and -400ER series airplanes. This AD requires an inspection to determine if certain motor operated valve actuators for the fuel tanks are installed, and related investigative and corrective actions if necessary. This AD results from fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent an ignition source inside the fuel tanks, which, in combination with flammable fuel vapors, could result in a fuel tank explosion and consequent loss of the airplane.
Comply with this AD within the compliance times specified, unless already done.
Within 60 months after the effective date of this AD, do the actions in paragraphs (g)(1) and (g)(2) of this AD.
(1) Inspect the motor operated valves (MOVs) in the main and center fuel tanks to determine if any MOV having part number (P/N) MA20A1001-1 is installed, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-28A0090, dated July 3, 2008. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number can be conclusively determined from that review.
(2) Do all applicable related investigative and corrective actions specified in and in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-28A0090, dated July 3, 2008, except as provided by paragraph (h) of this AD.
Where Boeing Alert Service Bulletin 767-28A0090, dated July 3, 2008, specifies replacing any actuator having P/N MA20A1001-1 with a new actuator having P/N MA30A1001, a serviceable actuator having any of the following part numbers is also acceptable as a replacement part: MA30A1001; MA20A2027 (S343T003-56); MA11A1265-1 (S343T003-41); or AV-31-1 (S343T003-111).
