Airworthiness Directive · Amendment 39-16704 · Fuel
The Boeing Company Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F; Model MD-10-10F, MD-10-30F, MD-11, and MD-11F Airplanes
This AD applies to all The Boeing Company Model DC-10-10, DC-10-10F, DC-10-15, DC-10-30, DC-10-30F (KC-10A and KDC-10), DC-10-40, DC-10-40F, MD-10-10F, MD-10-30F, MD-11, and MD-11F airplanes, certificated in any category.
We are superseding an existing airworthiness directive (AD) for the products listed above. That AD currently requires an inspection to determine if a certain fuel pump housing electrical connector is installed. The existing AD also requires a revision to the FAA-approved airplane flight manual (AFM) to advise the flightcrew of the appropriate procedures for disabling certain fuel pump electrical circuits following failure of a fuel pump housing electrical connector if applicable. The existing AD also requires the deactivation of certain fuel tanks or fuel pumps and the installation of placards if applicable. The existing AD allows the optional replacement of the fuel pump housing electrical connectors with new, improved parts, which would terminate the AFM revisions, deactivation of certain fuel tanks and fuel pumps, and placard installation. This new AD instead requires replacing the fuel pump housing electrical connector assembly with a new part and doing repetitive inspections for continuity, resistance, and insulation resistance, and doing corrective actions if necessary. This AD was prompted by reports of failures of a certain fuel pump housing electrical connector. We are issuing this AD to detect and correct insulation resistance degradation and arcing in the potted backside of the electrical connector assembly of the fuel boost/ transfer pump housing, which could compromise its performance and cause an ignition source in the fuel tank, resulting in a fuel tank explosion and consequent loss 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.
For all airplanes: Within 10 months after the effective date of this AD, do an inspection of the fuel pump housing electrical connector to determine if part number (P/N) 60-84355-1 is installed. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the fuel pump housing electrical connector can be conclusively determined from that review.
(h) If, during the inspection required by paragraph (g) of this AD, any airplane is determined to have fuel pump housing electrical connector assembly having P/N 60-84355-1: Within 10 months after the effective date of this AD, do the actions in paragraph (h)(1) or (h)(2) of this AD, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin DC10-28A261, dated December 1, 2009; or Boeing Alert Service Bulletin MD11-28A143, dated December 2, 2009; as applicable.
(1) Replace the fuel pump housing electrical connector assembly having P/N 60-84355-1 with new P/N 60-84351; or
(2) Do the actions required by paragraphs (h)(2)(i) and (h)(2)(ii) of this AD.
(i) Using a digital multi-meter, do a continuity, resistance, and insulation resistance inspection from the terminal strip through the fuel boost/transfer pump; and all applicable corrective actions specified in Boeing Alert Service Bulletin DC10-28A261, dated December 1, 2009; or Boeing Alert Service Bulletin MD11-28A143, dated December 2, 2009; as applicable. Do all applicable corrective actions before further flight.
(ii) Within 12 months after accomplishing the inspection required by paragraph (h)(2)(i) of this AD: Replace the fuel pump housing electrical connector assembly having P/N 60-84355-1 with a new fuel pump housing electrical connector assembly having P/N 60-84351.
(i) Before further flight after installing the new fuel pump housing electrical connector assembly, insert the applicable interim operating procedure regarding abnormal operations for failure of the fuel pump housing electrical connector into the Procedures section of the applicable Boeing airplane flight manual, in accordance with the applicable service information identified in Table 1 of this AD.
| Bulletin— | Date— | To the— |
|---|---|---|
| Boeing DC-10 Operations Bulletin 2-001B | January 25, 2010 | Boeing DC-10 Flight Crew Operating Manual. |
| Boeing MD-10 Flight Crew Operations Manual Advisory Bulletin 2-01B | January 25, 2010 | Boeing MD-10 Flight Crew Operations Manual. |
| Boeing MD-11 Flight Crew Operations Manual Advisory Bulletin 2-05C | January 25, 2010 | Boeing MD-11 Flight Crew Operations Manual. |
Within 18 months after installing the fuel pump housing electrical connector assembly having P/N 60-84351, in accordance with Boeing Alert Service Bulletin DC10-28A261 or Boeing Alert Service Bulletin MD11-28A143: Do a continuity, resistance, and insulation resistance inspection from the terminal strip through the fuel boost/transfer pump, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin DC10-28A261, dated December 1, 2009; or Boeing Alert Service Bulletin MD11-28A143, dated December 2, 2009; as applicable. Do all applicable corrective actions before further flight in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin DC10-28A261, dated December 1, 2009; or Boeing Alert Service Bulletin MD11-28A143, dated December 2, 2009; as applicable. Repeat the inspections thereafter at intervals not to exceed 18 months.
